Updated Apr 04, 2018

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Sun Buckets - stored energy solar cook stoves

Cook with the sun's energyindoors, outdoors, and even at night, with no fuel, no fire, and no emissions.

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Bruce Elliott-litchfield

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Stage 3: Proof of Concept

Proof of Concept: We have installed 30 units in Haiti and have demonstrated the proof of concept in field trials and ongoing use. Additionally, we have units in Cambodia and Namibia

Focus Areas:

Clean Cooking, Solar, Air Quality and 1 MoreSEE ALL

Clean Cooking, Solar, Air Quality and Energy EfficiencySEE LESS

Implemented In:



Country Implemented In
Funds Raised to Date


Sun Buckets addresses the global cooking crisis. We provide a portable stored solar thermal energy source with temperatures similar to fire without the fuel, the fire, or the emissions. Over 700 million households in energy impoverished areas spend 25% of their income to cook and in many cases using wood, charcoal, and animal dung. The emissions from these fires result in an estimated 4 million premature deaths a year and account for around 20% of global climate forcing.



Sun Buckets collect, store, and recover solar thermal energy in a portable format and at temperatures that compete with fire cooking. Sun Buckets are respectful of cooking traditions and cultures, allowing users to cook with their own pots and pans and using traditional methods of frying, baking, boiling, and other cooking approaches.

Target Beneficiaries

Sun Buckets benefit the energy impoverished who have limited fuel choices, who cook with solid fuels, and/or who spend a large portion of their income for cooking fuel.

Mission and Vision

We aim to provide solar fuel options for cooking while respecting cooking cultures and traditions.

Innovation Description

Sun Buckets use an innovative collection and storage system to store heat in a portable, insulated bucket. When users are ready to cook, they simply remove the insulated cover, and cook at very high (fire) temperatures without kindling, fire starters, fuel, flames, or emissions.

Competitive Advantage

To our knowledge, there are no other stored solar thermal cookers that allow users to cook when and where they like while preserving cooking traditions of their culture.

Planned Goals and Milestones

We are working on (a) field installations and demonstrations and (b) long-term storage.
Funding Goal1,000,000
Projected Cumulative Lives Impacted3,000,000,000
New Implemented CountriesDominican Republic, Cambodia, Kenya


Date Unknown
New Country Implemented In