Solar and Wind Provided 93.8% of New U.S. Generating Capacity in First Third of 2021 

According to a review by the SUN DAY Campaign of data recently released by the Federal Energy Regulatory Commission (FERC), wind and solar resources provided nearly all (93.84%) of the new electrical generating capacity added in the U.S. during the first four months of 2021 .   
Solar and Wind Provided 93.8% of New U.S. Generating Capacity in First Third of 2021 
Courtesy of NREL

FERC's latest monthly "Energy Infrastructure Update" report (with data through April 30, 2021) reveals that 18 "units" of new wind (3,802-MW) and 131units of new utility-scale solar (2,702-MW) accounted for most of the capacity added during the first third of this year. Natural gas provided 402-MW,hydropower added 14-MW, oil provided 6-MW, and biomass added 5-MW. All but 1-MW of the new utility-scale capacity reported for the month of April was from wind, 659MW and solar, 147MW.  

Utility-scale renewable energy facilities collectively nowa ccount for 24.77% of the nation’s total available installed generating capacity [1] and continue to expand their lead over coal (19.28%), nuclear power(8.21%), and oil (3.14%). The generating capacity of just wind is now more than a tenth (10.24%) of the nation's total while wind and solar combined account for 14.96% … and that does not include distributed (e.g., rooftop) solar. [2]  

Further, a review of FERC data over the past five years confirms the rapid growth in the share of the nation's electrical generating capacity played by renewable energy (RE), driven primarily by the expansion of wind plus solar (W+S): 

April 2017:  RE -19.57%  (W+S -   9.38%) 

April 2018:  RE - 20.66%  (W+S - 10.45%) 

April 2019:  RE -21.56%  (W+S - 11.48%) 

April 2020:  RE -22.87%  (W+S - 12.87%) 

April 2021:  RE -24.77%  (W+S - 14.96%)

In fact, FERC data suggest that renewables’ share of generating capacity is on track to increase even more over the next three years (i.e., by April 2024).  “High probability” generation capacity additions for wind, minus anticipated retirements, reflect a projected net increase of 21,889-MW while solar is foreseen growing by substantially more - 41,238MW. Hydropower and biomass are also projected to experience growth (901MW and 37MW respectively), while geothermal may dip by 2MW.  

On the other hand, the generating capacities of coal and oil are projected to plummet - by 25,171MW and 3,354MW respectively. In fact, FERC reports no new coal capacity in the pipeline over the next three years and just 16MW of new oil-based capacity. Nuclear power is likewise forecast to drop sharply - by 3,256MW, or more than 3% of its currently operating capacity. 

Moreover, natural gas' currently dominant share of total generating is forecast to diminish as the gap between the growth in new renewable capacity and new gas capacity continues to accelerate. For example, two years ago, FERC forecast the net increase in natural gas capacity to be 18,530MW during the ensuing three years while renewables would grow by 40,993MW (i.e.,a gap of 22,463MW). A year ago, FERC's 3-year forecast was for 20,657MW of net new gas capacity and 53,050MW from renewables (i.e., a gap of 32,393MW).And now, in its latest three-year projection, FERC foresees just 17,558-MW of net new gas compared to 64,063-MW of net new renewable energy capacity (i.e., a gap of 46,505MW). 

In fact, the combination of just wind and solar are forecast to provide nearly four times (i.e., a ratio of 3.6:1) more new generating capacity compared to natural gas over the next three years. Utility-scale solar alone will provide more than twice as much net new capacity as natural gas.

Further, wind and solar together will be almost a fifth (19.33%) of th enation's installed generating capacity. Including hydropower, biomass, and geothermal, renewable energy generating capacity should account for almost three-tenths of the nation's total available installed generating capacity -increasing to 28.83%. 

Meanwhile, if FERC's projections prove accurate, the net new capacity from natural gas, coal, oil, and nuclear power combined will actually drop by 14,223MW over the next three years. Coal's share of total installed capacity will drop to 16.55% (from 19.28% today), nuclear's to 7.63% (from 8.21%), and oil's to 2.75% (from 3.14%). Natural gas' share will also decline to 44.06%, compared to 44.42% now. 

"FERC's forecasts for strong growth by solar and wind overthe next few years may actually prove to be quite conservative," noted Ken Bossong, Executive Director of the SUN DAY Campaign. "Strong support from the Biden Administration coupled with further declines in wind & solar costs, stronger state Renewable Portfolio Standards, expanding corporate renewable energy purchases, and public pressure to address worsening climate change are combining to accelerate an already fast-moving train."  

[1] Capacity is not the same asactual generation. Capacity factors for nuclear power and fossil fuels tend tobe higher than those for most renewables. For example, in May 2021, the U.S.Energy Information Administration (EIA) reported that renewables accounted for21.6% of the nation's total electrical generation during the first quarter ofthis year; that was somewhat less than their latest reported share of installedgenerating capacity (24.8%). Conversely, coal's share of generating capacity inApril 2021 was 19.3% while its share of electrical generation during the firstquarter of 2021 was 23.2%.

[2] FERC generally only reports data for utility-scale facilities (i.e., thoserated 1-MW or greater) and therefore its data do not reflect the capacity ofdistributed renewables, notably rooftop solar PV which - according to the U.S.Energy Information Administration (EIA) - accounts for nearly a third (31.2% infirst quarter of 2021) of the nation's electrical generation by solar. Thatwould suggest that the total of distributed and utility-scale solar capacitycombined may be as much as 50% higher than the solar capacity of 4.7% reportedby FERC -- i.e., probably closer to 7%.

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