Google is working with heliostat technicnology, which is essentially giant fields of mirrors. Such technologies currently cost 12-18 cents per kilowatt hour (which would cost $600 million to $1 billion dollars), but Google is researching to bring this cost down to 5 cents. They also are investing in companies doing this research, $50 million so far. Through it’s efforts, Google manages to produce 6,431 hwh from the sun every 24 hours.
To supplement the post above, it said that google is looking to spend $100 million total. They hope the government will pitch in $20-$30 billion as well. Like DZWinkler said above, the cut in cost for solar energy would be down to about a third or a fourth of what it is now. Google also sponsors a number of green initiatives, which can be seen at the second link below.
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