Comparison of Coal Power to PV

I ran across a discussion about how many coal power plants are equivalent to 10GW of PV.  I ran the numbers and below have posted the results.  10GW of PV is equivalent to 5 coal power plants.  Many assume that coal plants average 1GW.  But they actually average about 0.5GW.  They also have surprisingly low capacity factor of under 70%.  This means that when adjusted to 100% equivalent the average coal plant is about 376 MW or .376GW.

I was surprised to learn that in the Southwest, solar power plants are seeing capacity factors up around 25%.

coal plant and PV comparison

Sources – Coal info – http://www.sourcewatch.org/index.php?title=Existing_U.S._Coal_Plants

Solar CF info – http://emp.lbl.gov/sites/all/files/lbnl-6408e_0.pdf

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