Energy [R]evolution: A Watershed Moment in India

Can your design replace dirty diesel pumps in the fields of India?

€30,000prize pool

Can your design replace dirty diesel pumps in the fields of India?


Particularly in India, many small-scale farmers work in areas where the electric grid is unreliable or nonexistent.  They need to pump water from the ground to irrigate their fields and the ubiquitous diesel pump is the most common choice.  The machines are initially inexpensive, but the rising cost of fuel and negative side effects like air and water pollution make these pumps costly and threatening to farmers’ fragile livelihoods in the long run.
A renewable energy powered pump is a logical solution: its power source is free or low-cost and greenhouse gas emissions are minimal. But the adoption of such pumps both in India and elsewhere remains low. There is currently no pump available on the market that fully meets the needs of the Indian small farmer, with an unsubsidized price low enough to compete with the diesel pumps and be adopted widely.


Task Definition

Design a renewable energy powered and portable water pump that can provide a viable alternative to diesel-driven ones. 
Entries will be judged on the following criteria:

  • Capability: how well does the pump perform compared to existing diesel pumps? How well does it address the current problems (overview here) with renewable energy pumps? 
  • Viability: does the design have broad applicability?  Is it easily usable?  Does it fit into farmers’ lives and work habits, or will it require education? 
  • Affordability: is the design within reach of farmers without relying on government subsidies?
  • Feasibility: how close is the design to being a workable product? Does it require additional technological advances or development?


Target Group

Small and medium-scale Indian farmers in Bihar state.


Mandatory requirements

Besides being powered by clean energy, such a pump or pump kit/system should meet the following requirements to be successful:

  • Portable
    • theft prevention -- farmer can take it inside the house at night and when away
    • can be easily used at different wells / by water merchants
    • easy transport for demonstration and sale in local markets
  • Robust under Bihar climate and rural use conditions, locally serviceable
  • Pump and deliver enough water to irrigate 1 hectare of typical Bihar produce (wheat or vegetables) from a depth of 5m. A micro irrigation water delivery system can be part of the system, but its cost must be included in the total system cost.
  • Total system cost must not exceed “one lakh” Indian rupees (100,000 rupees; ca. US$ 1500 at current exchange rate)
  • Assuming a groundwater table at 5m depth

For more background information on context, target regions, the rationale of these requirements and additional “nice to have” features that will positively impact evaluation of your solutions, please see our series of blog posts, especially this one.
Entries should include a sketch or rendering, expected cost, description of operation, expected water flow, and description of portability. 



There are four Challenge prizes: an Early Bird Prize, a Jury Prize, a Community Prize, and a Consulting Contract. 

EARLY BIRD PRIZE: Two prizes of 1000 Euros will be awarded to the best ideas, as chosen by the jury and Greenpeace, submitted in the first four weeks of the Challenge.  

JURY PRIZE: A panel of Jury Members will select three Jury Prize winners. In order to guarantee successful implementation, we are looking for solvers that are willing to personally participate in the further development of their solution in India, such as prototyping and in field beta-testing / design iteration, and will pursue, with the help of Greenpeace, the scaling-up and commercialization of their pump in India. If you are not willing / capable to fulfill this, please state on top of your idea description: “not eligible for Jury Prize”.

COMMUNITY PRIZE: The Community Prize includes 9000 EUR to be divided among the top 10 ideas as determined by community voting.

CONSULTING PACKAGE: Greenpeace will select one or more Jury Prize winning entries for further development.  The submitters of the Entries will receive a consulting contract with the Organizer of up to 5,000 EUR to support development of prototypes and presentation at a Prototyping Workshop in India. Licensing remains tbd between submitter and manufacturer.

By participating in the challenge, entrants agree to the Official Rules.


Jury and Experts

Similar to other Public Projects, we have an official advisor panel consisting of 12 (!) renowned jurors and 2 subject matter experts that will support you throughout the process. The jury you'll find listed to the right; experts are Emma Jane Bloomfield, Senior Strategist position at Purpose, whose work spans from public engagement strategy to social enterprise solutions, Caroline Howe, who works with communities around the world to develop locally-relevant, financially and socially sustainable solutions to environmental challenges, and Anudeep Yadav, expert and believer in solar energy with an electrical engineering background. 

Besides our Project Guide Jesko who is going to do the Community Management we are happy to introduce Stefan as our new Expert Guide from jovoto's site that will support you with his profound feedback, knowledge and background in energy and process engineering. Say hello to Stefan in our blog here.


And as always, please register / log in in order to participate in the project (submit an idea, comment or vote).


Show older comments (62)

Dear All, Inventors, engineers, creatives, tinkerers & thinkers,

welcome to this meaningful and exciting project! Let us invite you to be part of creating an energy revolution in Indian Agriculture.

I think everybody involved in preparing and setting up this project is excited and enthusiastic to see, find and discuss outstanding solutions for this meaningful task and enable small farmer´s irrigation in India. A renewable energy water pump can solve both the economic and environmental dilemma – it will not emit greenhouse gases, and it´s fuel is free.

Let´s have an awesome creative, passioned, fruitful and respectful time in this project, together.

Yours Jesko

Great concept and all in all a wonderful idea, now I am sorry for not being in industry design waters :D

Have some friends who are? Form a team? :-)

Dear madamov,

i think the service design – after creating the pump itslef – will be a very interesting and relevant discussion as well. Maybe you can jump in then.

Yours Jesko

The contest is interesting, but only for engineers. I can offer use a adaptation of Stirling engine, using the sun, but I can not construct it because it needs a mechanical engineer. Very difficult competition.

Perhaps find somebody else on the platform and team up?

Dear Elina,

yes, you are right, the main focus of this project is creating and engineering a portable pump run by renewable energy. And thanks for the inspiration!

I think the service design – after creating the pump itslef – will be a very interesting and relevant discussion as well. Maybe you can jump in then.

Yours Jesko

A great project! I really hope that it will be joined and rated by experts in the first place... I´ll rather be the quiet obserer here. ;)

with the input from

clairehilarymorris: making this portable for this situation briefing is a no-brainer winner:

Elina: Oh it seems this problem has been solved :)

the problem seems to be less of design and more of marketing existing designs. Wonder how much of that marketing resistance is due to the established players blockading the new technologies.

Wow! This is your project? It is based on the Stirling engine Yes if this project works - you are the winner!

Yes. I see the movie - it's the perfect solution. I wish you the best of luck with this project!!!!

The challenge is mostly to make it portable, produce enough water for one hectare, and all that for less than 1500 USD. :-)

It cost about 400 dollars. And it's portable. Enough to make a wheel:)))

Dear Billie and Elina,

thanks a lot for your comment and inspiration here. One of our judges is the founder of futurepump. As Ingo pointed out the main task is about creating a mobile solution, the amount of water for one hectare and affordable price.

Yours Jesko

I'm just curious. Why do not they want a little upgrade the existing model, which in terms of price and quantity of water is suitable 100%?

i don't get it if we suppose to be working on a new innovative design, as mentioned before by clairehilarymorris in the website it had been taken 20 years just for R&D and how come do we shrink into just 3 months of R&D-ing the new design. and it should be wisely mentioned where in bihar is the site example, if it further need to be cost-wise (as development of a hectare of irrigation).

Hey! Just a quick and a little late hello from my side. I am also very excited to be part of this project and to support your ideas with some technical feedback!

Great to have you right next to me, Stefan!

SSchrecker you did a great work in this project really thankful to you...

Welcome Stefan! Great to have you!

My question to the experts. Whether it is possible to offer a mechanical pump in combination with a drip irrigation? Because drip irrigation saves up to 70% water. Accordingly, do not need this amount of water for irrigation.

Dear Elina,

thanks a lot for your question. I think drip irrigation might be a very interesting option, as it saves so much water and you would need much less energy for pumping.

On the other hand it might be a question of cost and expenditure to implement the tubes on the field.

What do the others think?

Yours Jesko

I have an idea on the use of plastic bottles to create a drip irrigation system? This may be appropriate for the brief?

Dear Elina,

i think it depends on if you can scale it.

Our main objective in this challenge is not to provide irrigation at the lowest possible cost to the very poorest of farmers. Rather, we hope to replace diesel pumps in order to ultimately eliminate their environmental harm, and establish renewable energy pumps as a competitive and reliable alternative as part of our wider objective to promote renewables as an alternative to fossil fuels.

But give it it try and lets see how we can adjust it to the requirements.

What do you think?

Yours Jesko


Yes, a mechanical pump used with a drip irrigation system is possible. Our hand pump machine can pressurize a large tank quickly for drip irrigation. The tank can be pressurized to 60 psi by simple hand-pumping. Water is then delivered through a pressure regulator to supply water for a drip irrigation system.

Wanting to know if there is much running water around the area ?

Dear wayneperkins904,

thanks a lot for your question – lets see what the experts know about running water in Bihar. But if you think of running water in terms of renewable energy i think it might be good to focus on solar power since your solution will be much more independent from local criteria and in this way more feasible.

Yours Jesko

Running water as in rivers and canals? There are a few, but we really are focusing on pumping GROUNDWATER, from (borehole) wells.

@Ingo: Yes, absolutely. I guess he was thinking of using this as a source of energy.

@wayneperkins904: Here´s some more background information on the environmental situation in Bihar in the blog – "Lots of sun, little wind, and lots of agri-waste":

Dear All,thanks a lot for already 27 ideas – running this project just for a week now!

Looking at your ideas and suggestions we can see a lot of different approaches like a big brainstorming as the first part of finding the optimal solution.

Here´s some first relevant overall feedback looking at your submissions:

• Please keep in mind that Greenpeace is looking for aportable solution! Please make sure your solution is definitely easily portable. Portability is avery important criteriaaccording to the mandatory requirements for the most relevant and feasible solution. Secondly a mobile irrigation pump driven by renewable energy is much more sustainable as it will give many morefarmers accessand will provideirrigation of many fields.

• Our main objective in this challenge isnotto provide irrigation at the lowest possible cost to the very poorest of farmers. Rather, we hope toreplace diesel pumpsin order to ultimatelyeliminate their environmental harm, and establish renewable energy pumpsas acompetitive and reliable alternative as part of our wider objective to promote renewables as an alternative to fossil fuels. • Please keep in mind isnotlooking for ahuman poweredsolution.

• Please keep in mind that the potential forwind powerin Bihar isminimal. The Indian statistical institute went as far as declaring the state’s wind power generating potential as “zero” in its 2012 energy report.

• We already have one team submission. That´s great! If you need profound technical backgroundteaming upwith somebody experienced in engineering can be very helpful to adjust your idea to the technical requirements.

Additionally you will find lots ofrelevant backgournd information on our project blog that will be frequently updated – feel free to get inspired here:

Yours Jesko

Thank you for the honor of being your newest juror. I suggest that you clarify your specifications.

First, indicate the volume of water (cubic meters) required per day (not just the hectares). Sure, it will be based on averages, but you need to establish the playing field with a measurable number. I would base it on typical needs during dry season. I would NOT make it a maximum requirement for drought conditions. (Under extreme conditions, diesel pumps can still be used as backup.)

Also, you say it must be capable of 5m maximum lift. I suggest you specify the AVERAGE lift also. And, say that contestants can design for the daily volume required at that average. Otherwise, some people may think that systems must be sized for the rare extreme.

Specify debris tolerance: Can you describe the intake screening that is commonly used now for diesel pumps? They use a foot valve at the intake. That foot valve has a screen to filter out debris. It would be best if solar pumps do NOT require any finer screening than what is now being used. If designers know the typical size of the intake screen passages in current use, then they should design to accept debris up to that size. Also, the pump can then be provided WITHOUT a foot valve and the farmers can (presumably) use existing foot valves from their other pumps. That way the cost of the foot valve will not need to be included with the solar pump. And, the farmer can use existing piping for the solar pump without having to modify it. Also, finer screen requirements will demand increased maintenance.

I hope others will be asking questions like this. Great designs fail in the field. The devil is in the DETAILS!

Yours, Windy Founder, retired / Dankoff Solar Pumps Santa Fe, NM USA

Hi Windy, I second your concerns and had tried my bit to make things clear. I have tried to provide indicative figures for water requirement for the region here. and expected average lift figure is expected to be up in few days I guess,brief points indicating capacity of water sources available here. I am looking to fine tune both these entries and also upload a month-wise expected solar resource availability in the region from meteonorm/pvsyst.

Looking forward to your inputs for any improvements.


@WDankov and @AYadav - We did make a conscious choice to frame the water requirement this way, and not in "liters/second" or equivalent. This gives solvers more flexibility between "raw pumping power", or more moderate pumping performance, compensated by less evaporation and seepage losses achieved my a drip irrigation system included in the package. Basically, what we are saying is "your pump must be able to serve this use case - how you do that is your decision".

Hey Ingo, I remember. The point I saw in WDankov's comment was that , even if the figure is not there in requirements. Participants should be aware of approximate values found in average for the region for their knowledge, something which will be of help to all outside Bihar and India innovators.

In my opinion prolific use of low cost and low pressure drip tapes will lead to excessive plastics messing up the countryside. Lying in the hot sun, toxicity will leach into the ground when water passes through them. These low cost , low pressure drip systems have a life of 2 years for the 125 micron and 4 years for the 200 micron tapes (claimed by manufacturers).
Who is going to clear up tons and thousands of miles of plastics thrown all over the countryside after a few years? Garbage clearance in India,....specially rural India almost does not exist.

Dear arjun_mundkur,

thanks a lot for your insights. Indeed, if drip tapes for micro irrigation would cause toxic contamination or have a very low life time this would definitely be no option for Greenpeace.

• Is there background research on toxicity of drip tapes? • Are there other economic options for drip tapes that have a better life span and definitely no toxic consequences?

What do you and the others think?

Yours Jesko

Dear Jesko,

My opinion is based on general awareness that one should not drink water from a plastic bottle left in the sun or in a car. It is supposed to get toxic. India is extremely hot.

These systems are a great solution for areas with water shortage, they save water, labour, increase yield etc. benefiting marginal farmers greatly.

I have observed some organic farming by covering the field with straw, leaves etc to reduce evaporation, this simultaneously also enriches the soil. It’s a slow process but with long term benefits. Farmer also saves on chemical fertilizers. Experts in the organic agri sector will have a better idea.

Kind regards, Arjun

Thanks a lot, dear Arjun, for your point of view and experience.

**Dear All,

please have a look at the NEWS!** = )

Greenpeace invites you to support the community spirit working together in this project – and share your personal background story.

What is your personal passion that motivates you working on this task? What is your very own personal background? Do you have firsthand experience with agriculture?

Please have a look here:

Yours Jesko

Electric pumps are no saints, I estimate India burns about 200 million tons of Coal via thermal power plants every year for powering agricultural and domestic electric pumps. The CO2 emissions may actually be worse than diesel pumps. Just that its not so apparent.

Very true. Hopefully products like the pump the community is designing will eventually also be able to compete with grid-powered pumps. The only problem at the moment is that because farmers do get electricity very cheaply through subsidies, they have no incentive of switching to anything else. Once that stops, and the cost incurred to all Indians in damage to groundwater through excessive extraction is factored in, renewable pumps will become economically competitive with grid pumps. That will be our entry point, and we'll have adequate RE pumps ready.

Hi.....I wanted to confirm whether we need to submit the project with detailed calculation or just a schematic on how things shall go by ... ??????

Hey viraf. Please have a look at the ideas that have already been submitted. It certainly helps to undermine your idea with calculations so that the community can comment on your assumptions. Thank you for your interest, Stefan

Hi I am an innovator and inventor from Cape Town South Africa. One of my projects is to create an Electric Water pump generator. Using similar technology as my current prototype.

Hello Yugani, feel free to join the contest by submitting your idea! Maybe a little bit more information on your prototype? So far I see a battery in the background, a converter and a pump. All the best, Stefan

for submit the proyect wil need a format? what it is?

Dear cesarriat,

thanks a lot for asking. You can upload images and PDFs up to 10 pages. Here you find all detailed informations about uploading and file formats:

Yours Jesko

hi Jury I have submitted the idea which is a rough outline. If the idea is just on paper than how to put the dimension on it. I am trying to put cad design of it but it is taking time Please guide

Dear vikramkhanna01,

it´s absolutely OK if you submit a sketch. You could invite poeple to join your work and help you with the next steps simply by writing a note in your comments under your idea.

Yours Jesko

Dear All,

we just forwarded a shortlist for the Early-Bird-Awards to the Jury! Stay tuned – we expect the Jury decision beginning of next week.

Yours Jesko

I wanted to ask the community that we have been emphasizing on solar panels and pumps but to my knowledge most of the area which comes under Bihar comes under heavy rainfall during the monsoon season when they generally sow the seeds. During that time the sunlight is minimal and heavy flooding is their so how solar electricity will work. the basic requirement of solar panel is sunlight.

precisely...if it rains ,we dont need pumps. If it doesnt rain and i dry we need pumps.......

Dry season is ok basically i wanted to say when the area is covered with cloud or fog than what to do that will effect the solar panel which has this disadvantage. Farmers to irrigate require system round the clock. One thing more during sowing time farmers also irrigate their fields in night than solar panels will also not work

i guess the total flow rate matters more than day or night.....the average insolation in non rainy months is about 5-6 Kwh/m^2/day . also we need portability as equipment is liable to get stolen. In winter the transpiration is lower so less water is required. Also the gnd water table is higher in winter (cloudy/foggy) after the preceding monsoon rains and hence water req per hectare will be lower and needs to be pumped from a shallower depth

Dear All,

Ashoka Changemakers and Greenpeace will host a Social Enterprise Twitter discussion on Greenpeace’s Energy [R]evolution challenge today.

Social entrepreneurs, innovators, experts, and enthusiasts from around the world will join us to discuss the theme. Please join by logging on to Twitter and follow the #greenpeacechallenge hashtag or keep tabs on the discussion using Tweetchat.  

Today, Wednesday, October 09, 2013 from 9AM to 11AM EST (6:30PM – 8:30PM IST).

Theme of the #SocEntChat: Energy [R]evolution for sustainable and clean irrigation. Here´s a shortcut to the tweet room:

Are you in?

Yours Jesko

Hi Jesko. I have some questions about the project. How many Lt/s does de pump need to supply? How do they move the pump? Do they have animals to carry? How far is the farm from the place they live? The idea must be a functional prototipe with full calculations?


Hello lipadaho, Did you have a look at these blog posts? You will find detailed information on most of the questions you asked: The flow of the pump and the way of transportation depend strongly on the design you choose. Calculations can help to undermine your idea and make it comprehensive. Do you have a design in mind already? All the best, Stefan

Dear All,

the Jury shortlisted 15 Ideas, discussed pro and contra of each idea based on the criteria in the briefing and finally rated and found the two early bird winners.

Big Congrats to:

Early Bird I

goes to the team Jensen & Vivek with their idea "Simple Solar Pump for India"

Here are some quotes from the Jury discussing your idea:

"Very well thought through offering from a clearly experienced team." "An idea built upon experience, solid analysis, potential for rapid prototype and move to mass production." "Evidence of strong interaction with reputable component manufacturers." "Great to see innovative collaboration."

Early Bird II

goes to nbleezi with his idea "Solar panel powered portable water pump"

Here are some quotes from the Jury regarding your idea:

"Systematic and well documented design analysis - exceptionally well done!" "Very detailed explanations and covers all the pertinent points of call." "Clear understanding of cost issue interaction among components as way to economize overall cost."

In a couple of days we await the overall halftime feedback to give everyone feedback to develop their idea into the right direction. Secondly we will reach out to designers and product designers on jovoto to invite them to team up and help you to polish your presentation or even help you with the product design, if you feel like.

Thanks everyone for taking part, interesting, profound and innovative ideas and a very engaged discussion so far.

Yours Jesko

I want to ask the community i was going through the rules and regulation in which is says that the instrument should be between the cost of 100K and parts are to be easily available.

If this is correct than i have some question Can a PV system be between 100K and parts of PV system is not readily available in Bihar like state which is poor state as per the different economic surveys so. Plus it require specialist for repair a normal person cannot repair the system and most of the farmers are illiterate.

In this state Mechanical system will be more valuable than PV system. as these system are locally repairable and parts are also readily available and most imports even most of the farmers were/are using these system and some modification of those system will cost them less and also make their mind set to use those system will be more easier.

Hello vikramkhanna01, Thank you for your comment. The briefing does not state that a PV system should be used but many solvers chose this option to power the pump. Your concern is that PV systems are not locally available and not locally repairable? What kind of mechanical system are you suggesting? Thanks, Stefan

As such Mechanical system which uses the locally available materials like agri waste or any kind of organic waste which the local people throw or don't use them and which are burnable or can be converted in something which in turn leads to help in pumping of water.

In Indian agriculture system many such things were used earlier we can use those system to work upon.

I have seen many system in the project which people has suggested yes they use manual energy like human hand or something but as such that are more feasible than PV system as those systems are simple easily repair able and easily understandable.

Please feel free to submit an idea that uses agri waste! There have been very few submissions so far using biomass.









Dear All,first of all thanks a bunch for being here and taking part in such a meaningful challenge.

We have got 134 submissions with 1393 comments from 29 countries so far – two early bird winners with some very profound submissions and an idea range from many solar power and photovoltaic concepts, a few solar thermal concepts, a few biomass ideas up to a submission about antimatter. = )

Greenpeace is veryhappy about the wide participationand that a lot of people took the challenge, and would like toencourage everyone to make a contribution and develop best results that can survive in the fieldwithin the last weeks of this challenge. 

Collaborate!It would be great to see more people collaborating, joining international teams and making something great together.

• A key criteria is portability and costs. Greenpeace needs your submission to get closer to the mandatory requirements. 

• Your concept should be at least as portable as the old diesel pumps.

• The technology you are using should be ready for implementation in the next year to build a prototype.

•  Pleace specify how much water your pump can produce and make sure the amount of water that gets to the crop is sufficient.

• Please keep in mind that we are not looking for human powered solutions.

• Please keep in mind the potential for wind power in Bihar is minimal.

• What about thinking of useful add-ons – smart added value as a spark of inspiration & innovation? What about extra benefits for the local farmers like charging cell phones, TV, battery charge, so farmers have more reason to invest into that pump?

• What about business plan ideas? Will every farmer have one pump or will it be shared or rotated? 

• What if there’s no sun? Do you have an back-up plan?  We would like to invite you to finetune your ideas and bring it to the highest level you can get.

To help you sharpening your presentation we are going to invite graphic talents and product designers from jovoto to help you either polish presentations or even help designing your product. Please add a comment under your idea like “Graphic Designer Wanted” or “Product Designer Wanted” to let other´s know if you are up for collaborating and fine-tuning your presentation.

Yours Jesko

Sir, I am interested in knowing how the Community Prize is to be decided. Can one vote for Any Idea or for only those that have met the Mandatory Requirements?

Hello everyone, thank you so much for your incredibly passionate participation!!

Just a quick heads up that the Climate Group, in collaboration with the World Bank Institute and the Dutch Postcode Lottery, has also launched an off-grid energy competition that seeks innovative, micro-grid based energy solutions to scale up electricity access in the states of Uttar Pradesh, West Bengal and Maharashtra in India. The competition is designed to promote innovative, technological and financial solutions (possibly including any form of franchising) that scale-up or extend the use of proven technologies for delivery of off-grid energy through a variety of pioneering and commercially viable methods—reaching communities not served by existing power grids. Successful applicants will already be operating small businesses that are currently delivering affordable access to energy in off-grid areas of India on a commercially viable basis, to a minimum of 100 customers (who may be households or businesses).

Though we (Greenpeace/jovoto) are not associated or affiliated with them in any way, we thought you might be interested - application deadline is Oct 31st (tomorrow!!), you'll find more information here.

Besides that – keep going and thank you for creating solutions for an energy revolution in India!

This tool can be useful to dimensionate the system:

Dear Solver Community,

We're getting close to our submissions deadline, and we're thrilled to see the great work you've been doing so far. For the final sprint, we have a little extra motivation for you!

The winners of the challenge will be announced on December 12th in a ceremony organized by Greenpeace in Patna, the capital of Bihar state. We have been able to secure additional funding which allows us to sponsor travel for a representative of each Jury Prize winning team to India!

Jury Prize winners will first participate in a workshop with funders, rural distribution experts, and mentors who know about manufacturing and starting businesses in India. Then they will receive their awards in a high-profile evening event, with lots of media present to kick-start their visibility. The day after, we will take them on a field trip to rural areas in Bihar, where they will meet the farmers for whom they have been designing their solutions, and start a process of collaboration.

This should be an excellent opportunity to start the winners' network with key people in India, who will be essential to make sure the winning concepts become successful products that start what we are here to launch - the Energy [R]evolution in Indian Agriculture!

See you in India!

This sounds awesome! At Solar Fire, we've worked with Indian businesses before, the last prototype in India we built in 2012. Depending on the market, we could scale our steam-pump system up from 3 to 10kW effective thermal, and improve the efficiency of the breather pump further so as to achieve greater outputs of 80-120 liter per minute.

With a variety of system sizes we can allow the market to transist to renewables incrementally!

Hopefully you will select a variety of systems because there is a networking potential between different solutions, such as solar thermal and bio gas systems for example. That way we can provide an even more resilient system.

We also like the idea of workshops and networking with all stakeholders in bringing this change. It is the right time for it as we see peak oil hitting, people suffering from energy scarcity and these kinds of initiatives are exactly what's needed to provide the small-scale farmers with more autonomy as they are mitigating climate change and globalization already.

Looking forward to collaborate, Hopefully until soon, Urs Riggenbach of Solar Fire

This Design is very Excellent.

Excellent Design!

I don't know how to rate. any one please tell me please. actually my English is so poor, but I try my best to join. hihi...

hi maya you can see an icon RATE THIS IDEA click this you can see ***** then move the cursor on these star symbol to select and rate and is really very easy

hello Girishrampura.. thank for your guiding. in fact I want to mean how many star I would to rate for every design.. if I don't rate does it OK ?

Dear mayamaya911,

thanks a lot for asking. You are not forced but free to rate. Just think of the briefing criteria to make up your mind how many stars you think the submission should get.

If you want to learn more about rating have a look here:

Yours Jesko

Sir, I am interested in knowing how the Community Prize is to be decided. Can one vote for Any Idea or for only those that have met the Mandatory Requirements?

Dear muktakeshi,

of course you can rate all ideas. The ones that match all mandatory requieremnts might be the ones that you will rate with the highest score.

If you want to learn more about rating have a look here:

Yours Jesko

All the entries I've read so far, make untrue claims of performance, because they fail to calculate in the loss of flow caused by the necessity to raise the water 6 meters vertically. The numbers they are quoting are for pumping water horizontally. Actual performance will be a small fraction of the claims being made.

You are correct that it makes a big difference.

I have taken that into account for vertical lift. m.g.h = P.E gained by water which has to be supplied by the pump. This is a very fundamental assumption and cannot be violated. Hope you go through my submission in detail.

It is easy enough to calculate the true numbers. WORK = FORCE x DISTANCE, FORCE = water mass x ( 9.8m/s^2).

Metric system makes the math even easier. Mass for 1 liter of water = 1 Kg. So for example if you claim to have raised 10 liters of water per 1 second., then you realistically need to add 98 Newtons of force working against you each second.

most of the pumps including motor have overall efficiency of 50-60% only. I would like share one of the experimental data: our pump was consuming around 800 watts when water flux was 74LPM from 30 meter depth. Output = (74/60)9.830 = 360 watts (ignoring kinetic energy in water stream and temperature raise) Overall efficiency = 360/800 = 45%, this includes losses in motor, pump, pipe and bends etc
Some motors may be more efficient, some pumps may be but overall we are going to be around 50-60% with conventional motors and pumps.

Hope I have not made any silly mistake in my calculations :)

Hi bramh. Yes, that has also been my experience. The important thing that sometimes gets overlooked is that you have to multiply the pump efficiency x motor efficiency to get the overall efficiency. For example, my design shows 83% for the motor and 55% for the pump-end, so the total is ~ 45%. There are some positive displacement pumps that will give higher eff. than centrifugal models but they may have some challenges delivering the volume required for irrigation.

Dear Jensen, I was talking about performance of complete system that includes efficiency of motor, pump pipes bends etc. As we developed our own VFD and pump we realize that we can improve the efficiency of VFD by utilizing better MOSFETs, of motor by using silver in rotor and pump by reducing gaps between rotor-stator pair. But all of these improvements have their own side-effects in terms of cost and envelop of utility. I really liked Vivek's idea of using sprinklers to bring down PV modules temperature, during afternoon PV module registers around 40-50 degree effectively bringing down performance by 10-15% which is a huge loss.

You maximize efficiency by choosing an underpowered motor, to make sure it is always running at 100% load capacity. Friction is the main cause of efficiency loss, and that is constant with respect to load. In my design I intentionally overload the motor for a short time, then allow it to rest between bursts.

  1. I increase the assumed pumping head to account for losses in piping, etc.

  2. Efficient operation of a solar motor is achieved by oversizing the array a bit so there is usually reserve power available to maintain the peak speed of the motor at its most eff. rpm.

I find it excellent that give this opportunity to the world to provide solutions.

Good morning creatives, while reading the brief and examining some of the proposed solutions , i can't figure out if it was mandatory to include the solar panels ( the power generating source in general) in the portable part of the pump, or you could design a (more) portable unit coupled to a fixed energy generator/charging station (collective or personal).. didn't this option met the brief criteria? i hope this is the right place to post such a question, if not please forgive me! thanks in advance and i wish the best to all the participants!

Dear mobymick,

thanks for asking and yes, this is just the right place to ask. = )

Actually according to the briefing you are free to suggest a smart solution, so you could split the device in two parts if it makes sense as a smart overall concept.

Yours Jesko

Sorry guys, I cannot rate in this contest because I have too less knowledge about the technical things and details.

You and I wisely choose not to rate, while the fools keep on rating. That is indicative of how little the outcome of this contest is significant or worthwhile.

After months with working with the challenges , i think there is a big logical problem (gap ) in Jovoto system with rating process , your system jovoto is hacked . All the results will be false . we came here to this community to solve problems and find solutions for the humanity for the future, but i think instead of looking for the truth we are working against it , and i think , Jovoto is the only blamed. i suggest here that the next challenge should be " how to modify Jovoto system for the right results". That's what we would like to inform Jovoto administration about!!!!!!

Jovoto's lover

Hi mtahaa,

During the rating period, it can definitely be a roller coaster for ranks. But we can assure you quality and thorough rating monitoring is being done and it will be carried out after the rating period is over as well. With the help of our project guides and jovoto algorithms- we can be sure to have fair ratings before the final ranks are announced.

If you have suggestions on how to improve our rating system you are welcome to start a discussion in the Support Center. Here's the link: We're here to hear your feedback :-)

Best, Jess

@Jess The problem is most of us are designer. To judge and rate whether an idea is suitable and feasible is very difficult for us.

thank you Jess for comment, indeed i want to discuss solutions and suggestions around that issue for the best results , based also on experience in systems developing and analyzing....

Hello dear "Mtahaa"

It is actually curious that you are qualifying my comments as "bad behavior"when you actually responded to them: "Thank you for good observations which help me in doing many calculations and modifications". I have hundreds of hours working with solar concentrators and just wanted to give you my opinion for you to be able to improve your idea in a further stage. I think maybe you could try to be a professional and know how to handle objective recommendations instead of just appreciating comments like "good job", which I actually found useless.


How can you say that when you have a project in the top 20 at present?

thank you dear waternuck , please visit the idea see the comments of greenpump, 3104693779 , golu786,dharmveer ,Shibi and others . I absent for two days, to go back and find some bad guys messing with there and that's what made me a bit nerves, this also may the reason of absence a lot of wonderful ideas as solutions (good results) .for example there is no mechanism of alert about bad behavior .

Good to see such Challenges are being opened up. Decentralization is essential. Thank you so much! Let's make the difference happen. Big up!

What is the point in having “Mandatory Requirements” when many, perhaps most, of the ideas ranking Twenty /Fifty / Hundred do not fulfil them.

It would be better if all the prizes are to be judged by your jury.

Alternatively your experts could first filter and screen those ideas which fulfil the Mandatory Requirements and only then the Community may be asked to rate and vote for them.

perhaps you are correct but there are still many ideas which fulfill mandatory requirements but because of some people they are rated very poorly. I have seen many top ideas over hear are rated badly just to improve their friend's idea rating.

People who have not had a chance to visit Bihar will find it very difficult to visualise a practical design. So they are hoping that at least a few designs will emerge for further development

I fell “Mandatory Requirements” should mean Mandatory Requirements.

Indeed, there are still many ideas which fulfill mandatory requirements.

We wanted to enable an open, collaborative process here. So we have a strong Jury decision AND a community winners chosen by the community itself. We do rating monitoring to enable fairness within this process.

Yours Jesko

I liked very much the idea of ​​the challenge, and many of the proposed solutions

Well done guys...

Thanks a lot, dear satoshi!

why is it so ? when i see my rating in morning it is somewhere very high and then when i look at noon time it is very low Is it normal and genuine or something wrong is going on ?

That is happening because of low rating given to you by some new participants. When some of these low ratings are found to be unfair by the jovoto team they are cancelled. Let us hope they can do this well !!!

Thanks for explanation.

Thanks for explaining, dear vivek! Right! = )

Dear solvers! While we're all busy voting 256 (!!) ideas, let's not forget to keep designing for a better world! So until Greenpeace comes back with new challenges, here you go with our recommendation for two great projects that are worth investing your time and brains.

1) 'Securing Water For Food', a project looking for technological and business model innovations to secure water for food. Another grand challenge to humanity that needs to be tackled! Submit your ideas here, from November 27, 2013 through January 17, 2014.

2) The ' Fellowship Program' that fosters social sector leaders of the future. Their aim is to gather talented people from the design, business, and social sectors to learn and innovate for a better world. Think you have what it takes to be a 2014-2015 Fellow? Apply here by January 6, 2014 at 5:00 pm PST.


Thank you, Greenpeace and Jovoto, for hosting this contest to solve a serious problem – the urgent need to affordably pump volumes of water in remote areas. It’s been exciting to see the ingenious and vastly different ideas from around the world.

We happened upon this contest just one day before the submission deadline, so didn’t have much time to prepare. Yet we received very encouraging feedback and even hung around in the top-10 ratings for a while. This surprised and pleased us since our presentation was quickly assembled and our design is a manual pump, not solar.

With numerous frightening scenarios facing life on Earth (climate change, peak oil, water scarcity, toxic pollution, resource depletion, etc.), the results of this contest helped regain our hope. With so many bright minds working together, we can find ways to pump enough water from the ground to irrigate crops and animals without destroying our environment in the process. It has been a pleasure for us to participate.

Dear WaterBuck,

thanks a lot for your positive Feedback and being here! We think facing and solving meaningful problems in an open, transparent colaborative process with solvers from all over the world might have a huge impact on finding the best solutions, together.

Yours Jesko

Can understand where mtahaa is coming from regarding the ratings. Have watched an entry closely for the last 3 weeks. The changes in the rating cannot be explained by averages of ratings. It may be that the karma system and the anti-clique algorithms were the cause, but it mtahaa's suspicion that the system has been hacked deserves very careful testing and analysis. This is a purely personal opinion, but these things are a lot more common than some people suspect. There are some highly sophisticated hackers out there.

Another question is how frequently the algorithms run, and if there is any human intervention.

The same question applies to how frequently the ratings are calculated and published.

jovoto needs to consider ways to increase transparency for users. The number of ratings shown to owners of ideas should be broken down into active, passive(not enough karma) and rejected ratings. In this way, the owners would have a chance to verify their rating.

It is also strange that the rating shown via mouseover on the object is not always the same as the rating published. How does that work?

Dear lugboy,

At jovoto we want to enable to community to choose and rate the best ideas – we do monitoring to enable fairness within this process.

Please be sure we do smart and intense monitoring. – The algorithm is running live and recalculating every 4 hours. On top of that we do human monitoring, too.

Usually at the end of the rating period there are a lot of ratings streaming in, so we know it might feel a bit like a roller-coaster, but please trust in us to provide best fairness from our side for this meaningful task.

If you want to know more about rating on jovoto – please have a look here:

Yours Jesko

Dear Jesko what is human monitoring ..??

Its me doing monitoring. I am human. = )

almost 7 years ago

Hi JeskoStoetzer,

The first criteria of this challenge must be the carbon footprint. Indeed, the problem posed by diesel pumps which have high level carbon footprint, should not be replaced with other systems which have high level too. We have to prevent world that PV has a high level carbon and air pollution. See what's happens in China with that industry.

If the judgment of the community can not be objective ( because it can visibly be hacked or corrupted by the solar cells merchants ) Greenpeace's judgment is critical.

Hoping that the winners are not only photovoltaic system because that mean this campaign is no use.

So this is just for me to retain only the decision of the jury, and not the arbitrary judgment jovoto I hope that I am not the only one to think this way.. thank's and good luck to you all!

Dear joy joy,

thanks for sharing your honest opinion.

Right, the goal of this challenge is to find a mobile irrigation solution run by renewable energy to replace diesel pumps. The carbon footprint is indeed a relevant factor.

Please know that we do smart and intense monitoring to provide best fairness within the rating process. On top of that we have a Jury decision that selects the best ideas from their point of view, too.

I have to disagree about a photovoltaic solution – I think there´s no reason to assume that this would possibly not be a wining idea or relevant solution.

Yours Jesko

Agree with you joyjoy

It is amazing to have a platform like Jovoto where experts from all around the world join together. I love the Idea of presenting a solution to a problem faced by people all around the world. This is really a good stage to have such amazing talents come along together and the best part is the Client, Jury and the Community helping each other to find a reliable solution. One of the best approach in Renewable energy technology development can be found in this Greenpeace Challenge

thank you Jovoto thank you Greenpeace

Thanks a bunch, dear shubham271!

The Job to website is a great find for me

Dear Jesko, I notice that Solar Thermal participants and fans are trying to give Solar PV ideas a bad image. Solar PV has brought lights to millions of poor homes around the world, remote areas, increased income, education, quality of life, etc for people with no grid power. Thanks to China for flooding and dumping the world with Solar PV bringing price down to very affordable levels even to poor people. It has become a proven and reliable solar of power. Carbon foot print, climate change etc are good topics to draw attention towards use and development of renewable energy. However the real problem is fossil fuels are a limited resource, getting expensive and eating into your income and causing inflation. There is nothing wrong with fossil fuels, the world has benefited hugely from fossil fuels in the last 300 years leading the human race to very rapidly develop. Steam engines and steam reciprocating pumps have become obsolete decades ago, Sterling engines never made it beyond the lab and remained a technology demo. Mirrors and reflective surfaces have been there centuries too. Will be interesting too see what new technology our solar thermal participants have which was not there centuries ago and what the brilliant scientists of the past missed out. Best wishes to all participants.

Dear Arjun_mundkur,

thanks for sharing your opinion. I think there should not be rivalry between solar thermal and solar PV directions but rather looking for the best solution to solve the problem, together.

Yours Jesko

Dear all, It is a pity that a so beautiful initiative is ruined by the inadequacy of the people. I especially refer to the myriad of fake accounts that ruin the overall score of the community. During these days I've seen a lot of accounts with 152 karma points that have lowered the score of a lot of interesting projects at the expense of other questionable ideas. Others who have sent private messages saying "vote for me, look at my video." To sum up, a war among the poors. I'm sorry to be so direct, but I'm pretty disappointed for the general administration of the contest. I don't think that we will participate again as TheBreedingGround on new contests with public assessment, but only to those ones where it is necessary to register by sending your own portfolio.

Regards SAM for TBG team

Dear Sam,

thanks a lot for letting us know how you feel. We know and can understand that the final rating period can feel a bit like a roller coaster. We want to enable the community of solvers and creatives to choose winners by rating and provide profound jury decisions on top. To ensure fairness within this process we monitor ratings. We have a lot of experience and smart algorithms to track ratings and put manipulative ratings on false.

Yours Jesko

Dear Jesko There's a last day frenzy . The most viewed and top rated ideas are getting bashed very cleverly. But I guess you guys know all the tricks. All the best. You have tough job ahead!!! Yours Vivek

We know that it is not a comfortable job. Maybe an improvement would be the possibility to report the single users adding a button in the profile for each person. This way the community would help you reporting as much fake users as possible, surely. Because this behavior is annoying and you guys and the community together could stop it during the contest and after the deadline.

Also this morning I have seen 5 to 10 fake accounts which have a valid vote, so maybe the algorithms could be helped in this way, by the real community, directly (without report the entire idea, but the single user). Human power rocks! :)

Jesko I have the same concearns as the rest of the guys here. Last night my rating was was 0.3 points above what we currently have, I've calculated and any "excellent" or "better thrash it" gives or takes about +-0.01 to our rating. From last night there has only been about 50 new votes at most, meaning that ratings of 4 to 6 when averages should have kept our score quite unchanged. The only logical conclusion is that within those approximate 50 votes, most have been upright shameless idea bashing, which I find quite sad. I have my hopes on you guys to sort things out, but thought that this shouldn't go unmentioned.

To my mind, the best solution is to delete TOP20 and TOP50 pages. Every solver will still see his rating, but others -not. Envy and Jealousy are old Mankind's sins -).

I think that's actually a good solution

I think that the best solution may be the possibility to report single users. Not only the ideas, but by adding a button in the profile, this way when someone looks very suspicious you could report it.

Dear Tauko,

thanks a lot for yourinspiration. We discssed it internally and will take out the TOP20 and TOP50 button in the next big public challenge.

Yours Jesko

It may be wrong to assume that the front end hacking via malicious voting was limited to the last few days.

These players have understood, I suspect, that a coulple of bad votes up front for strong ideas which threaten their interests can have the effect of keeping those ideas out of the top 100 for several days and weaken the spash a new idea could make.

The same applies to ideas which have just arrived in the top 100 or top 50. These are likely to have fewer votes so hitting them will pay more dividends than hitting one with a lot of votes.

The problem is, how can you prove it? Personally my conscience is telling me that when I get to the pearly gates, St Peter will wink at me and tell me he has sorted those clowns on jovoto who slagged that idea, but my conscience is also telling me it is gravely unethical to make such serious allegations without sufficient cause. The player may have genuinely decided the idea was crap.

Re the back end hacking, I follow what Federico is saying about averages. We simply dont have enough info the test this.

It is also a matter for concern that a vote appears to have a boolean status, when it can have more than two stati.

Ok you can debate the definition of status, but the big question is, what effect does that late addition of karma have on the validation algorithms?

Another question is how the average is calculated. If malicious votes are included in the total vote count, then early malicious voters get an extra bonus, as the victim will NEVER completely recover.

Not sure what the right thing to do is, but one option which deserves consideration is declaring the vote null and void.

I wish to stress that these opinions are purely personal and do NOT represent the views of any organisation I am a member of.

Dear lugboy,

there has been no hacking neither in the front nor in the backend. Please be sure that we are doing intense monitoring to provide fairness within the rating process and set manipulativ ratings on false. The Karma level helps to provide a solid base of ratings to make them count.

Yours Jesko

So this is where the REAL community comes to have a talk. Feels good to see you all letting off some steam about fairness.

I too tried to mobilize friends to go and vote, but now I think it's best to ignore all voters that have not spent enough time on the site to review projects in detail. How could someone possibly collect the needed karma points within an hour reading all the project's detailed outlines, videos and pictures? How could I expect my friends to spend more than an hour of their busy lifes doing this?

I think there would have been evenly vivid participation if the jury would have distributed all 13 prizes. I hope the monitoring will be radical. Since anyway there's not a lot of transparency, we all will agree to any ranking you may make ;). Maybe the jury will reconvene to rank all? How is everyone feeling about that?

Dear magahugu,

thanks a lot for sharing your thoughts and being so open. I absolutely agree – it takes time to read and understand the concepts and of course should to be done before rating.

Be sure we do a lot of monitoring to filter all manipulative ratings.

Yours Jesko

greenpeace /jovoto or not I am going ahead and making a proto based on my designs. I need some real constructive feedback on how to go about it and estimates on cost of prototyping and designing the screw . I personally feel that this whole community rating thing appears to be farce when it comes to engg projects..It may work for subjective design projects but thats about it...When it comes to engg projects how can projects end up in top 20 when they do not even meet mandatory reqs.

For this challenge the community ratings is just a popular vote for entries.

What really matters is the following:

JURY PRIZE: A panel of Jury Members will select three Jury Prize winners. In order to guarantee successful implementation, we are looking for solvers that are willing to personally participate in the further development of their solution in India, such as prototyping and in field beta-testing / design iteration, and will pursue, with the help of Greenpeace, the scaling-up and commercialization of their pump in India.

Someone who does not make the top twenty can be still chosen by the Jury. So hang in there!

There are a lot of good ideas that don't fit the challenge, but can be great for other applications. I am glad these ideas are shared and voted on!

Thanks a lot for your reply, dear WaterBuck !!

Dear Jesko, by when can we expect the results?

Kind regards, Urs Riggenbach

Dear magahugu,

Currently diving deep into monitoring. Community- and Jury winners will be announced this thursday.

Yours Jesko

anyone claiming more than 50% wire to water efficiency should be asked for supporting data.

u can find bigger off the shelf pumps with sweet spot of 80% efficiency ......not in smaller ones

I just discovered this forum. I feel some need to respond to the cynical discussion about thermal based solar projects. I have installed successful PV systems for a West African village at the community level. With larger pumps ( 15,000 gal/ day) and 1.5 kw of solar PV panel, the system was ideal. We could get a lot of drinking water to people at a good rate and the $10,000 overall price tag was an excellent target for funding. I would do it again! But... I saw that these systems did not scale down well to the 500-2000 gal/ day needed for hundreds of small farms and gardens on the same area. Firstly, these communities have no tax base in real estate to support multiple projects.and no fair way to distribute shares of centralized water supplies for market gardens. Each family needs to control its own water supply for gardening purposes. They cannot pull from public drinking water supplies.

Yes.. cost is coming down on PV and we are on the edge of contest affordability with that. But why not work to do even better than $1500 so that we can reach more needy farmers. My pre-contest goals were to beat $1000 in a complete system.

My greatest concern became the reliability of smaller pumps. I began to burn through every commercial pump less than 1 horsepower in less than 1000 hours. African friends ran them all into the ground while I did the same in my shop. And these smaller pumps had a particularly hard time after a season of storage which is common in many wet season areas.

This is what drove me and our team to revisit solar thermal powered systems. Oddly... The argument that this good old steam technology would have discovered all that could be discovered by now turns out to be very wrong. Patent reviews revealed that these smaller scale applications based on pneumatic cylinder technology did not arise in the past for two reasons|: 1. No one has spent much energy supplying pumped water in automated systems with these technologies as applied to the poor or to micro scale projects. Everything in design tends to follow the money and now we find that the huge body of struggling farmers needs whatever technology can best serve them today; 2. Steam piston technology has never before now been able to get light and portable. Our research showed us that the magic was in the changes in rubber technology of the past 3-8 years. Old steam pistons had to include metal rings like a heavy Diesel engines because the rubber would not stand up to compressed moisture at even. 300 deg F. That has all changed just recently with the advent if Vitron seals and rings and two other more recent developments now coming into common use. The manufacturers of this ultra-light technology are contracting with us today to initiate whole new production lines based on these discoveries in solar steam design.

So this IS NEW TECHNOLOGY! WELCOME TO THE NEW AGE OF STEAM. We will be powering pumps, homes and industry with this technology.

Thank you all at Jovoto/ Greenpeace for inspiring us to push these discoveries into the light.

Hi Ben. Good to know that technology is having a revival. I am a bit puzzled at your experience with small dc pumps. We typically get ~5,000 hours out of our brush-type motors. As you will see in my website testimonials, some of customers have run them seasonally for >10 years. Having said that I also have developed a healthy respect for our friend Murphy's Law, and know that ther may be significant effects of the warmer water typical in the tropical regions. Best regards, Eric Jensen (

Excellent points, gentlemen. That is exactly the kind of innovation we'd been hoping for. Shows again that the "if it was feasible it would have been done before" is flawed.

One thought on the fly ... The Romans created their empire, developing hidraulica systems ... they moved the water without bombs, no one has been able to do it later, and that technology, fall into oblivion ... Of course, it is the cheapest and efficient existing technology ... Restudy, the hydraulic systems of Heron has been my summer project ... and the results are amazing ... Alive the hidraulica ...

Arjun Mundkur

Yes, the world has benefited greatly from fossil fuels in the last 300, but at a tremendous cost – which is why we’re here now trying to find an alternative.

The renewable energy developed today is derived from limited fossil fuel. Solar PV is merely a bandage to extend the life of limited fossil fuel. The era of fossil fuel will be short-lived and a return of steam engines, mirrors and reflective solutions and human powered machines will return. Nuclear energy is not an option considering we still have not solved the waste issue. Also the potential for catastrophe increases as our climate becomes more unstable.

Simple ideas, simple machines and human power have served humanity well for thousands of years!

Dear WaterBuck, I will be happy if cheaper and simpler tech gets off the ground. Its for all of us to benefit ultimately. However ground reality human power in India is mostly child labour so instead of going to school you know what they will be forced to do. Women exploited because the cost less to employ. Men get fat discussing politics. I too hope steam makes a come back, it does have power to deliver provided the required temperatures can be maintained. But the versatility of electricity is incomparable. "The renewable device which produces electricity in the most cost effective manner will rule". It is a single source of energy which can power massive motors to smart phones and of course the internet. Electricity will ensure we don't go back thousands of years to simple ideas, simple machines and human power!

Dear All,thanks a bunch for your very engaged work and discussion in this purpuseful project for Greenpeace!We are finished with rating monitoring and the Jury took their decision as well.

We are going to announce the community- and Jury winners in a couple of minutes live and synchonised with the Greenpeace event in India.

We are going to publish all information about the winning ideas, Jury discussion and the Event in the blog tomorrow.

Yours Jesko

Dear Tomme!

Right, you will find all information here in the linked blog post.

Yours Jesko

Congratulations everyone who are winner over here :) thanks jovoto

can anyone tell me which is cheaper option to transfer money to india paypal or through banks... how much exactly do paypal deducts and banks?

Dear rajatjainstanselmalwar,

I will talk to our account team and send you a private message.

Yours Jesko

dear jesko even I have the same issue, how to get money transferred to India? do I need to fill a w-8ben form or simply PayPal account email will do the work ? secondly I am a bit confused in Tax Information column.

even for

After more three months of work with this important challenge, I would like to say: “thank you and congratulations to all and it’s only the beginning, there is still a lot."

Thanks to a lot of the challenge heroes, that should have been named in the lists of winners, Thanks to everyone who participated in this challenge.

Thanks: Greenpeace to adopt this important challenge in the field of sustainability, and thank you for leaving the door open for everyone to develop the solutions and ideas.

Thanks: Jovoto to host this challenge and give the opportunity to participate , learn from and interact with it freely, thank you all the community of Jovoto.

Continue with you in developing the solutions of the challenge and the wonderful platform of Jovoto.