At the same time, the FERC report suggests that coal might experience a net decline of 18.7 GW — equivalent to 6.6 percent of current capacity — while nuclear power drops by 2.3 GW — equivalent to 2.2 percent of current capacity.
The numbers were released as FERC prepares for a January 10 meeting to consider U.S. Department of Energy Secretary Rick Perry's proposal for a bail out of the coal and nuclear industries.
FERC's data also outlines the retirement of 10.8 GW of natural gas capacity by the end of 2020 but offset by the potential addition of 92.5 GW for a net gain of 81.7 GW — an amount that would increase current natural gas capacity by 15.8 percent. Oil generating capacity would remain largely unchanged, with retirements of 571 MW and additions of 762 MW.
Renewable sources, however, could see the largest increase in their share of the nation's total installed generating capacity through December 2020.
Proposed additions for wind total 72.5 GW with only 68 MW of retired capacity, while solar could add 43.5 GW and experience just 2 MW of retirements. Hydropower, while retiring 706 MW, would grow by 12.7 GW. Biomass might add 945 MW and retire 47 MW, while geothermal could expand by 1.6 GW without any retirements. In total, proposed net generation additions for the mix of renewable sources totals 130.5 GW.
Should the proposed generation additions and retirements prove accurate, within three years, the mix of renewables would account for more than a quarter (26.5 percent) of the nation's installed generating capacity — up from one-fifth (19.9 percent) today. Solar and wind combined would equal nearly 17 percent (16.7 percent) of capacity by December 2020.
Read more at US Utility-Scale Solar, Wind Capacity Could Double by 2020
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