In reply to PeterM:
> (In reply to tom_in_edinburgh)
>
> Obviously....consume more.. that'll save the planet and make it more equitable and ethical. Can't see how that could possibly bother the poor in places like the Congo who I'm sure are just desperate for a faster tablet, safer car and better medical imaging, and a new faster laptop for Skypeing the family, oh and the demand for LED bulbs in their shacks and tents has skyrocketed.... Jeez, talk about first world ethics and problems....
Actually LEDs are ideal for off grid lighting in Africa because they are rugged, have long lifespans and are low energy allowing them to run off rechargable batteries topped up by solar panels. And one of the features that is getting demanded in that market is a connector for charging cellphones.
From
http://www.i-sis.org.uk/LightingAfrica.php :
"According to Lighting Africa, the African market for off-grid lighting products is projected to grow at 40 to 50 percent annually, with 5-6 million African households owning portable lights (primarily solar) by 2015 [8]. In 2010 alone, the sales of solar portable lanterns that have passed Lighting Africa’s quality tests grew by 70 percent in Africa, resulting in more than 672 000 people with cleaner, safer, reliable lighting and improved energy access.
....
The new-generation lamps offer features that consumers are demanding, such as cell phone chargers. The prices of light-emitting diodes (LEDs), solar components, and batteries have also fallen sharply over the five past years. As a result, off-grid products are more affordable for low-income households."