Advanced Search

Please click here to take a brief survey

Light and Heat in the Developing World
Alex Steffen, 9 May 05

Cooking and providing light are primary, fundamental energy uses. As we've discussed before, half the world still uses biofuels like wood and dung to do their cooking. Building better cookstoves and light sources is pretty high on the planetary to-do list.

Anil K. Rajvanshi has a great overview of some of the recent research in the field, including new developments in biogas, more efficient mantles for lanterns, LEDs human-powered electrical systems, new products like Freeplay's wind-up radios and flashlights and new technologies:

Recent developments in nanotechnology and new materials have also shown that efficient devices that also convert heat directly into energy can be developed. For instance, coin-sized 'nano-engines' that can produce ten watts of energy from biomass fuels such as ethanol, are already being developed by researchers at the US-based Massachusetts Institute of Technology and University of California, Berkeley for defence purposes and to power mobile phones. The devices could also power LED lamps, revolutionising rural lighting. Such a compact system would bypass the need for bulky and costly batteries, since the liquid fuel itself would store the energy. This could result in an extremely compact and lightweight decentralised lighting source.

Bookmark and Share


Hi Alex,

just wondering whether readers might be interested in this InterWorld Radio piece on electricity in Ghana, by Edwin Kumah Drah of the Ghana Broadcasting Corporation [requires free registration to listen/download]:

Best wishes,

Panos London / InterWorld Radio

Posted by: Sameer Padania on 13 May 05



MESSAGE (optional):

Search Worldchanging

Worldchanging Newsletter Get good news for a change —
Click here to sign up!


Website Design by Eben Design | Logo Design by Egg Hosting | Hosted by Amazon AWS | Problems with the site? Send email to tech /at/
Architecture for Humanity - all rights reserved except where otherwise indicated.

Find_us_on_facebook_badge.gif twitter-logo.jpg