Table 3.27 Gross/Net Generation by Energy Storage Technology: Total (All Sectors), 2013 - 2023
(Thousand Megawatthours)

  Generation at Utility Scale Facilities
Gross Generation Net Generation
Period Battery Compressed Air Flywheels Hydroelectric
Pumped
Storage
Total Battery Compressed Air Flywheels Hydroelectric
Pumped
Storage
Total
Annual Totals
2013 9 0 25 19,257 19,290 -3 0 -8 -4,681 -4,692
2014 24 9 47 20,054 20,133 -14 -2 -21 -6,174 -6,210
2015 76 8 49 20,111 20,244 -20 -7 -24 -5,091 -5,142
2016 142 17 43 22,443 22,645 -170 -8 -22 -6,686 -6,886
2017 383 12 62 22,752 23,209 -69 -8 -26 -6,495 -6,597
2018 358 6 67 21,503 21,934 -88 -6 -28 -5,905 -6,026
2019 456 6 59 20,772 21,293 -97 -7 -26 -5,261 -5,391
2020 557 6 53 21,073 21,689 -131 -5 -24 -5,321 -5,482
2021 1,507 23 46 20,618 22,194 -264 -6 -23 -5,112 -5,404
2022 3,808 26 49 22,466 26,349 -689 -6 -23 -6,028 -6,746
2023 6,696 2 42 22,132 28,872 -1,281 -4 -20 -5,990 -7,294
Year 2021
January 59 1 4 1,381 1,445 -14 -0 -2 -424 -440
February 62 1 3 1,396 1,462 -13 -0 -2 -425 -440
March 67 0 4 1,269 1,340 -13 -0 -2 -236 -250
April 70 1 4 1,186 1,261 -16 -0 -2 -197 -215
May 90 1 4 1,482 1,577 -18 -0 -2 -416 -436
June 130 3 4 2,052 2,189 -23 -1 -2 -376 -401
July 157 3 4 2,596 2,760 -29 -1 -2 -685 -717
August 172 4 4 2,726 2,906 -31 -1 -2 -670 -704
September 161 2 4 2,113 2,280 -26 -1 -2 -434 -462
October 160 4 4 1,667 1,835 -23 -1 -2 -427 -453
November 182 1 4 1,281 1,467 -31 -0 -2 -377 -411
December 196 2 4 1,469 1,671 -28 -0 -2 -445 -476
Year 2022
January 201 1 4 1,626 1,832 -33 -0 -2 -493 -528
February 224 0 3 1,375 1,602 -40 -0 -2 -412 -453
March 225 0 4 1,566 1,795 -39 -0 -2 -318 -359
April 248 1 4 1,216 1,468 -40 -0 -2 -265 -307
May 287 2 4 1,874 2,167 -53 -1 -2 -467 -522
June 322 4 4 2,461 2,791 -57 -1 -2 -589 -649
July 345 4 4 2,726 3,081 -66 -1 -2 -768 -838
August 348 5 4 2,812 3,169 -67 -1 -2 -640 -710
September 349 3 4 2,191 2,546 -68 -1 -2 -598 -668
October 423 3 4 1,442 1,872 -78 -1 -2 -434 -515
November 416 1 4 1,524 1,946 -75 -0 -2 -495 -572
December 421 2 4 1,653 2,081 -72 -1 -2 -548 -623
Year 2023
January 474 0 1 1,574 2,049 -76 0 -1 -620 -697
February 403 0 1 1,482 1,886 -98 0 -1 -456 -555
March 484 0 1 1,579 2,064 -118 0 -1 -519 -638
April 497 0 1 1,465 1,963 -85 0 -1 -290 -376
May 477 0 1 1,880 2,358 -82 0 -1 -459 -542
June 510 0 1 2,299 2,810 -94 0 -1 -551 -646
July 576 0 1 2,707 3,284 -121 0 -1 -656 -778
August 606 0 1 2,678 3,284 -116 0 -1 -653 -769
September 599 0 1 2,213 2,813 -123 0 -1 -553 -676
October 703 0 1 1,496 2,200 -123 0 -1 -372 -496
November 687 0 1 1,378 2,066 -118 0 -0 -347 -465
December 680 2 31 1,383 2,095 -128 -4 -13 -514 -658

See Glossary for definitions. Values are final. See Technical Notes for a discussion of the sample design for the Form EIA-923 and predecessor forms.
Totals may not equal sum of components because of independent rounding. NM=Not meaningful due to large standard error. W=Withheld to avoid disclosure of individual company data.
Displayed values of zero may represent small values that round to zero. The Excel version of this table provides additional precision which may be accessed by selecting individual cells.
Sources: U.S. Energy Information Administration, Form EIA-923, Power Plant Operations Report; U.S. Energy Information Administration, Form EIA-906, Power Plant Report; U.S. Energy Information Administration,
Form EIA-920 Combined Heat and Power Plant Report; and predecessor forms.
Beginning with 2008 data, the Form EIA-923, Power Plant Operations Report, replaced the following: Form EIA-906, Power Plant Report; Form EIA-920, Combined Heat and Power Plant Report;
Form EIA-423, Monthly Cost and Quality of Fuels for Electric Plants Report; and Federal Energy Regulatory Commission, FERC Form 423, Monthly Report of Cost and Quality of Fuels for Electric Plants.