Book review : Factor five

We all know it : energy – and resource – efficiency is the panacea to all our energy and environmental woes. As I finished reading another excellent book on the very matter, I am sharing with you today the main findings.

Factor Five is the sequel of the 1997-book Factor Four. It demonstrates how our world economy could become at least five times more efficient and thus truly achieve a sustainable development in terms of economy and environment.

Full with facts, figures and examples taken from all around the world, it shows it is not only possible but that it makes a lot of sense both economically and environmentally.

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Solar energy, a panacea for Africa

Solar energy is to me the panacea for Africa, a continent where 550 million people still lack electricity. With molten salts, concentrating solar could bring light to these populations during important parts of the night.

Solar cookers could also help fighting deforestation by removing the need for fuelwood. Now an experiment run in Benin (West Africa) shows that pumps using solar PV panels are bringing several improvements to local populations.

Drip irrigation systems need pumps to operate. To date, they are using engines running on kerosene. The Solar Electric Light Fund (SELF) believes solar could replace them.

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