Pay-As-You-Go Solar Electricity
This system from Eight19, got a big plug in the Sunday Times today.
I think the company has got something here, as it can provide low-cost lighting to all of those places in the world that are off-grid.
The article shows how in places like Kenya it can be used to provide lighting and mobile-phone charging at a very affordable cost, by combining good solar technology with simple systems based on scratch cards and mobile phones.
But I think it has other applications,where you need a small amount of power in a difficult to get to place. Remember that even in the UK, we have a surprising amount of sunlight most of the time. But of course not now!
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The Anonymous Widower 
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