Ashley Cooper / A solar cooker being used to cook food at the offices of WWF India, in Delhi, India. December 2013

Ashley Cooper / A solar cooker being used to cook food at the offices of WWF India, in Delhi, India. December 2013

Ashley Cooper / Women constructing solar cookers at the Barefoot College in Tilonia, Rajasthan, India. The Barefoot College is a worldwide charity, founded by Bunker Roy, its aims are, education, drinking water, elec...

Ashley Cooper / Solar cookers at the Barefoot College in Tilonia, Rajasthan, India. The Barefoot College is a worldwide charity, founded by Bunker Roy, its aims are, education, drinking water, electrification through...

Ashley Cooper / Solar panels that focus the suns rays on heat exchangers to boil oil, which is then sent down to the kitchens below to heat the cookers. Muni Seva Ashram, Goraj, near Vadodara, India, December 2013.

Ashley Cooper / Kitchens with cookers powered by solar thermal heat exchangers on the roof. Muni Seva Ashram in Goraj, near Vadodara, India, December 2013.

Ashley Cooper / Solar cookers, solar food dryers and solar water purification devices, as well as solar panels for generating electricity. Muni Seva Ashram in Goraj, near Vadodara, India. December 2013.

Ashley Cooper / Woman with solar cooker used to cook food for the school students at Muni Seva Ashram, Goraj, near Vadodara, India. December.

Ashley Cooper / Solar cookers used to cook food for school students. Muni Seva Ashram in Goraj, near Vadodara, India. December 2013.

Ashley Cooper / Sun reflecting off mirror to make solar cooker, Muni Seva Ashram in Goraj, near Vadodara, India. December 2013.

Ashley Cooper / Staff in the old folks home kitchen cooking using biogas generated in the grounds. Muni Seva Ashram, Goraj, Vadodara, India, December 2013.

Ashley Cooper / Solar panels that focus the suns rays on heat exchangers to boil oil, which is then sent down to the kitchens below to heat the cookers. This picture shows a newspaper sets on fire in the 300 degrees...

Ashley Cooper / Solar panels that focus the suns rays on heat exchangers to boil oil, which is then sent down to the kitchens below to heat the cookers. Muni Seva Ashram, Goraj, near Vadodara, India, December 2013.

Ashley Cooper / Solar powered air conditioning for the Ashram's hospital. Muni Seva Ashram in Goraj, near Vadodara, India, December 2013.

Ashley Cooper / Ashram's bio-gas plant, that is fed with food waste and manure and fuels the kitchens and the Ashram's vehicles. Muni Seva Ashram,Goraj, near Vadodara, India,

Ashley Cooper / Ashram's bio-gas plant, that is fed with food waste and manure and fuels the kitchens and the Ashram's vehicles. Muni Seva Ashram in Goraj, near Vadodara, India. December 2013.

Ashley Cooper / Ashram's bio-gas plant, that is fed with food waste and manure and fuels the kitchens and the Ashram's vehicles. Muni Seva Ashram in Goraj, near Vadodara, India. December 2013.

Ashley Cooper / Ashram's bio-gas plant, that is fed with food waste and manure and fuels the kitchens and the Ashram's vehicles. Muni Seva Ashram in Goraj, near Vadodara, India. December 2013.

Ashley Cooper / Student making a fan powered by solar electricity. Muni Seva Ashram in Goraj, near Vadodara, India. December 2013.

Ashley Cooper / Woman with solar cooker, Muni Seva Ashram in Goraj, near Vadodara, India. December 2013.

Ashley Cooper / Solar panels that focus the suns rays on heat exchangers to boil oil, which is then sent down to the kitchens below to heat the cookers. Muni Seva Ashram, Goraj, near Vadodara, India, December 2013.

Ashley Cooper / Solar panels that focus the sun's rays on heat exchangers to boil oil, which is then sent down to the kitchens below to heat the cookers. Muni Seva Ashram, Goraj, near Vadodara, India, December 20...

Ashley Cooper / Solar crematorium at The Muni Seva Ashram in Goraj, near Vadodara, India. December 2013.

Ashley Cooper / Solar crematorium at The Muni Seva Ashram in Goraj, near Vadodara, India. December 2013.

Ashley Cooper / Solar crematorium at The Muni Seva Ashram in Goraj, near Vadodara, India. December 2013.

Nick Upton / Solar cooker, with a reflective parabolic dish focusing heat from the sun onto a metal casserole pot, within a renewable energy display at ITER Bioclimatic village, near El Medano, Tenerife, August.