Marc Peterson: The CO2 Coalition adviser who spoke to the Utah Legislature is wrong about the costs of renewables. His arguments 'are incorrect, but not new.'
This May 6, 2013, file photo shows a wind turbine farm owned by PacifiCorp near Glenrock, Wyo.I am writing in response to the Salt Lake Tribune article,”, scientist tells Utah legislators. This is an incorrect argument, but not new.
Electrical demand in any system is not constant, it varies throughout the day. Coal, and combined cycle gas generation are considered base load technologies. This means they are intended to be turned on and left on. They are very inefficient at following demand because if they are operated at less than full load their cost per megawatt significantly increases.
Smith argues the cost of an on-demand generation source , required to fill in the gaps for wind and solar, be added to the price of renewables. To follow his logic, the cost of the peakers should be added to the cost of the coal and/or combined cycle base load technologies. Meaning, if you increase the cost of wind and solar, you also must increase the cost of base load generation.
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