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Subject: Myths perpetuated locally about solar

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jennifer
Posts:4

11/11/2007 6:43 PM Alert 
Hello, Everyone!

At the PUC meeting in Ely on Thursday, Nov. 8th, I heard quite a few myths being perpetuated by county officials regarding solar energy technology. There IS a difference between solar thermal and solar photovoltaic, with solar thermal being very close in costs to coal (these numbers were even presented by the PUC but they did not discuss them). A company in CA, Ausra, is currently developing very large-scale solar thermal generating plants in CA and has a few answers to common myths on their web site. I've copied them below. For those of you unawares, the Ely Energy Center, proposed by SPR, will cover approximately 3,000 acres, which is equivalent to 11-12 square miles, and will generate up to 1500 MW once completely constructed. Ausra has designed and is building a plant in CA that will generate more electricity per square mile than the EEC. If a company was to use the same designs as Ausra, that company could generate 1500 MW of electricity on 7-8 square miles of land, would need considerably less water (they recycle the water used to generate steam, thereby negating the need to pump large amounts of water daily), could run 24 hours non-stop, and would not need an air quality permit while simultaneously generating at least as many if not more permanent jobs.

If White Pine County wants to recruit businesses, why are they ignoring companies such as Ausra? If the PUC really wanted to simultaneously promote renewable energies and rural development, why are they spending $145 million dollars on an air quality permit when they could have spent the money on the transmission lines that they claim can only be built with funds from a coal-fired power plant?

Sincerely,

Jennifer


From www.ausra.com/technology/myths.html

"Solar energy only works in the daytime, and it can't provide the reliable power we need."
Solar thermal power plants can store energy during daylight hours and generate power when it's needed. Ausra's power plants collect the sun's energy as heat; Ausra is developing thermal energy storage systems which can store enough heat to run the power plant for up to 20 hours during dark or cloudy periods. To learn more about how Ausra's plants store energy, click here.

"Solar energy is too expensive for mass adoption."
While PV solar panels are still coming down in cost, they are still well above the costs of utility-scale generation. Solar thermal power plants such as Ausra's generate electricity by driving steam turbines with sunshine. Ausra's solar concentrators boil water with focused sunlight, and produce electricity at prices directly competitive with gas- and coal-fired electric power.

"We would have to cover too much land with solar power plants."
Solar is one the most land-efficient sources of clean power we have, using a fraction of the area needed by hydro or wind projects of comparable output. All of America's needs for electric power – the entire US grid, night and day – can be generated with Ausra's current technology using a square parcel of land 92 miles on a side. For comparison, this is less than 1% of America's deserts, less land than currently in use in the U.S. for coal mines, and a tiny fraction of the land currently in agricultural use.

"Solar is too small to help with climate change."
Today the electric power industry is growing in the U.S. and worldwide while facing unprecedented changes in the regulatory environment. It has become clear that to preserve a climate similar to today's, most human emissions of carbon dioxide will need to be eliminated by about 2050. Studies have shown that solar thermal power can, at very reasonable cost, eventually provide the majority of American electric power. To impact global climate change and American dependence on energy imports, renewables will need to replace many of our existing power sources. One coal-fired power plant emits as much CO2 as 1 million cars, so replacing our electricity generation with renewables will have the greatest impact on climate change.
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