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Please find below the judging results for your proposal.

Finalist Evaluation

Judges'' ratings


Judges'' comments

Congratulations! Your proposal, District Level Electricity Production; Using Household Biogas in the Urban Energy Efficiency contest, has been selected to advance to the Finalists round.

Be proud of your accomplishment – more than 350 proposals were submitted and only a very small number have been advanced through these two rounds of judging.

As a Finalist, your proposal is eligible for the contest’s Judges Choice award, as well as the contest’s Popular Choice award, which is determined by public voting.

If you haven’t already, you will soon receive an email from the Climate CoLab staff with details about the voting period. If you don’t receive that email within the next day, or have other questions, please contact the Climate CoLab staff at

All winners will be announced the week after the voting period ends, on September 12, 2015 at midnight Eastern Time.

Both Judges Choice and Popular Choice will receive a special invitation to attend selected sessions at MIT’s SOLVE conference and present their proposals before key constituents in a workshop the next day, where a $10,000 Grand Prize will be awarded. A few select Climate CoLab winners will join distinguished SOLVE attendees in a highly collaborative problem-solving session. Some contests have additional prizes given by the contest sponsor.

Thank you for your work on this very important issue. We’re proud of your proposal, and we hope that you are too. Again, congratulations!

2015 Climate CoLab Judges

Additional Comments:

1) The project looks at a small component within a larger system of which many of the other critical components are not present such as a sewer system, sewer plant and direct biogas generators.

In an environment where all the other components exist then the proposed system will be able to scale quickly and cost effectively.

2)The proposal revision marginally improved the clarity of the concept. However the cost analysis is still too brief, and is missing a full costing. The concept is sufficiently interesting to pursue, but more work is needed to assess the C/B.

3)The concept of biogas for local generation has merit – and while little is described that clarifies that this is a fully credible project, it appears through the comments that it is. I don’t think it’s a problem that a revised site was selected.

Semi-Finalist Evaluation

Judges'' ratings


Judges'' comments

SUBJECT: Your proposal has been selected as a Semi-Finalist!

Congratulations! Your proposal, District Level Electricity Production; Using Household Biogas in the Urban Energy Efficiency contest, has been selected to advance to the Semi-Finalists round.

You will be able to revise your proposal and add new collaborators if you wish, from July 1st until July 14, 2015 at 23:59pm Eastern Time.

Judges' feedback are posted under the "Evaluation" tab of your proposal. Please incorporate this feedback in your revisions, or your proposal may not be advanced to the Finalists round. We ask you to also summarize the changes that you made in the comment section of the Evaluation tab.

At the revision deadline listed below, your proposal will be locked and considered in final form. The Judges will undergo another round of evaluation to ensure that Semi-Finalist proposals have addressed the feedback given, and select which proposals will continue to the Finalists round. Finalists are eligible for the contest’s Judges Choice award, as well as for public voting to select the contest’s Popular Choice award.

Thank you for your great work and again, congratulations!

2015 Climate CoLab Judges

Judges' Comments

Great idea with an innovative twist. More implementation details would have made this project even more appealing

Would it not have been more cost effective to install a sewer system and decant into a larger location further away where a larger volume of biogas can be produced and also a plant installed to bottle the gas?
The volume of biogas from 100 homesteads are highly unlikely to produce sufficient biogas to make the maintenance of the bio digestor and transportation cost effective.
Also the large number of micro digesters is likely to create a new environmental challenge.

There seems to be a missing gap within the process (Septic Tank through to supply of Electricity to household). Team G4CC to research and plug those missing gap. The team has not conducted any feasibility yet. Hence cost of the project not clear. Piloting using a small community within a district may be an option to look at during Years 1 and 2 of the project phase. Success story could then be told from the Pilot project leading to its acceptance and deployment by other communities. There is no doubt of the economic and environmental benefits associated with the project.

This is a good first start but the proposal needs to be developed further to better quantify the impact in terms of GHG emission reduction and the cost analysis. Households should appear Under "who will take actions". The two systems should be compared: central vs outsourcing. Biogas collection and use works better for large centralized installations, because of economies of scale and the need to maintain fairly sophisticated equipment. In any case those considérations should be taken into account and discussed

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Abraham Bugre

Jul 14, 2015


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We want to take this opportunity to thank the judges for the wonderful and critical comments, we believe they are very relevant hence their incorporation into the proposal. The G4CC team has decided to pilot its project in a small town called 'New Site' in the Adentan District of Accra. We have agreed to use the sewer system that will connect septics from house holds into a centralized tank located way from households in the district. Waste management companies who extract waste from household septic tanks will be contacted to bring their waste to our plant instead of going to pay a fee before dumping, these actions will make the supply of septic waste more available and in good quantities to ensure there is enough biogas for electricity production from the digester. We hope these additions will now make our proposal more clear. Thank you. Abraham(G4CC)