>>>http://www.poodwaddle.com/worldclock.swf
>>
>>Interesting (and a bit scary).
>>
>>The 'Energy' section reminded me of an interesting fact I heard yesterday:
>>
>>The amount of energy delivered to the Earth in one hour by the sun would, if captured, more than meet the entire current energy needs of the world for one year.
>
>Solar insolation is roughly 1 kW / m^2 .

My sister has just installed solar panels. Electricity companies in the UK have, by law, to buy any electricity which you produce by 'green' means at a premium price. That rate for photo-voltaic production is currently 41p per KwH and that is quaranteed for 25 years. This compares with an average purchase price of around 10-14p per KwH. The system she installed cost about £17K and should pay for itself in about 10 years. Of course the normal buying price for energy will probably increase over that period so the differential will be reduced.

I think the guaranteed price is also set to drop a little in the near future. But that will only apply to new installations and the cost of the panels, etc is steadily reducing anyway.