That’s what this write-up — of results of a Carnegie Mellon U. researchers’ study — claims:
The benefits vary not only by where wind and solar power is generated, but when. Wind production is generally best at night, so it tends to displace coal-fired “baseload” generators. Solar output peaks at midday, so it is more likely to offset on-demand natural gas generators.
As a result, a megawatt-hour of wind energy can displace more emissions than a megawatt-hour of solar energy, depending on where it is installed. Wind delivers 30 percent more benefit than solar in Virginia and Maryland, but the difference is “negligible in much of the country.”
Source: http://electricalcontractor.com/?p=10406
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