If you check the cost per installed MW you will see why PV wins hands down against concentrating solar.
Flush With Oil, Abu Dhabi Opens World's Largest Solar Plant
by Scott Neuman
NPR - March 19, 2013
Abu Dhabi, the most oil-rich of the United Arab Emirates, is now home to the world's single-largest concentrated solar power plant.
The 100-megawatt Shams 1 plant cost an estimated $750 million and is expected to provide electricity to 20,000 homes, according to the BBC.
Why, you might ask?
Bloomberg says the less oil Abu Dhabi uses for local consumption, the more it can export.
Sultan Ahmed al Jaber, head of Abu Dhabi Future Energy Co., speaking at a news conference for the plant's opening over the weekend, said it is part of a "strategic plan to diversify energy sources in Abu Dhabi."
"Together, with clean energy and nuclear energy, it will make up 7 percent of Abu Dhabi's energy sources from renewable energy sources," he said.
Shams 1 uses 768 adjustable parabolic "trough mirrors" to focus sunlight onto a water boiler that produces steam, activates turbines and finally generates electricity, reports the website Clean Technica. The middle step in the process, it says, is to use natural gas to superheat the water.
The plant, located about 75 miles southwest of Abu Dhabi, is similar in design to Solar Energy Generating Systems (SEGS) located in California's Mojave Desert. Although Shams 1 claims to be the single-largest plant, the nine SEGS plants taken together generate more than three times as much energy and serve more than 10 times as many households at peak output.
Officials in Abu Dhabi hope Shams 1 will save 175,000 tons of carbon dioxide annually, the equivalent of taking 15,000 cars off the road. The plant is the first of several more on the drawing board.
The UAE's neighbor, Saudi Arabia, is on a similar tack with the most extensive renewable-energy program in the Middle East, Bloomberg reports:
"The country is seeking about $100 billion in investments to generate about 41,000 megawatts, or a third of its power, from solar by 2032. That compares with about 3 megawatts now, which puts it behind Egypt, Morocco, Tunisia, Algeria and the United Arab Emirates in capacity, according to Bloomberg New Energy Finance."
[Copyright 2013 NPR]
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