
Google announced this week that it will be making its largest renewable energy investment to date by investing $168 million in Brightsource Energy's Ivanpah solar thermal power plant in the Mojave desert. The plant will have an installed capacity of 392 MW.
The Ivanpah plant began construction last year and should be completed in 2013. It will employ 173,000 heliostats, each with two mirrors, to concentrate solar energy onto a tower where the heat will make steam that turns a turbine and creates electricity. While other solar thermal projects are in the works in the Southwest, Ivanpah is the largest solar tower project so far.
This type of solar power technology is one that Google is trying to improve upon themselves. The company announced last year that it was working on a more efficient mirror technology that could lower the cost of solar thermal plants.
This latest investment brings Google's total renewable energy investments up to $250 million.
via Google

written by Eric, April 15, 2011
written by Al Plumlee, April 16, 2011
written by ds, April 16, 2011
Environmental impact has been thoroughly examined.
No radiation, no mercury and no mining.
Why did it take so long?
written by Shoken Ritsu, April 18, 2011
written by Elias, April 19, 2011
written by Bob in CA, April 28, 2011
Renewable energy is just barely viable from a cost standpoint as it is. Renewable energy facilities have to go where they will work, and for solar that's the desert. That's not to say that we shouldn't plaster the roofs of buildings with solar panels, we should do that too. This is a big installation that only produces 392 MW. A recently completed natural gas powered plant a bit closer to LA takes up much less area and produces over three times as much electricity. If the solar plant wasn't out in the desert, it would produce even less.
Besides, have you ever been to Ivanpah? It isn't like it's pristine.
You can't have it both ways. If you want renewable energy we have to build the facilities. Solar goes where there is the most sun, wind goes where there is the most wind, etc. Anything else simply isn't realistic.
written by tom Kuchnicki, April 29, 2011
Since electricity cannot be stored in any viable quantity where will all this clean power be used?
The US does not have a quality interstate "smart Grid System", so the power generated will have to be used locally during an off-peak power usage time period.
I'm glad to see Google taking an active role in producing clean power, I just hope the end user was thought of before starting this project.
I was researching solar power and found it takes $900.00 of solar equipment to light a 100 watt light bulb. Pretty expensive in my book.
written by frisbee, April 29, 2011
To light a 100 watt light bulb for 24 hours a day (I think that's what you mean) takes 2400 Wh per day, which means 365 x 2.4 = 876 kWh per year. In 20 years this will take 17.520 kWh. At 10 cents per kWh this would cost you about $1750. I'd prefer that solar equipment for $900!
Besides: what a waste of energy. Better use a 20 W LED bulb! Much more efficient. Use the rest of the solar power for other means :-)
written by David Guion, April 30, 2011
written by leslie, May 07, 2011
written by Mojave , January 25, 2012
Secondly, energy costs will likely not decrease and the costs to build the infrastructure to transport this energy all the way back to large cities will be passed on to the consumer.
I guarantee you that science will not save the planet. Only decisions to change our lifestyles will protect the earths chemistry and maintain conditions hospitable to humans.
President Obama vowed last night to open up public lands fro development. I will not be voting for his reelection and I hope that many of you make the same decision.
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