Built 2026-09-19 (19 September 2026)

SPA Electricity Demand and Generation Mix

SPA demand was 0 MW in the hour starting 15 Sept 2026, 10:00 CDT (UTC-05:00). Hydro was the largest source in the hour starting 14 Sept 2026, 22:00 CDT (UTC-05:00), at 100% of generation. Operator data is hourly and provisional, and may be revised.

Key Facts

  • SPA is a balancing authority in the United States, part of the EIA Central region.
  • In the hour starting 15 Sept 2026, 10:00 CDT (UTC-05:00), demand in SPA was 0 MW, against a day-ahead forecast of 34 MW.
  • Hydro supplied 100.0% of SPA's generation in the hour starting 14 Sept 2026, 22:00 CDT (UTC-05:00).
  • Demand in SPA totalled 197 GWh in 2024.
  • Hydro supplied 56.6% of SPA's generation in 2024.
  • The highest daily demand in SPA from 2019 onward was 2.80 GWh, on 2021-02-15 (15 February 2021).
  • The highest hourly demand in SPA since 2026-06-16 (16 June 2026) was 59 MW, in the hour starting 17 Jun 2026, 11:00 CDT (UTC-05:00).
  • Solar's highest share of SPA's daily generation from 2019 onward was 100.0%, on 2024-06-03 (3 June 2024).
  • Wind's highest share of SPA's daily generation from 2019 onward was 100.0%, on 2024-06-03 (3 June 2024).

Latest Demand

Hourly operator data
Demand0 MW
Day-ahead forecast34 MW
30 day peak55 MW
30 day average24 MW

Latest hour known when this page was built: 15 Sept 2026, 10:00 CDT (UTC-05:00).

Source: U.S. Energy Information Administration (EIA). (US Government work, public domain) Data as of 2026-09-15T15:00:00Z.

Generation by Source

Latest hour with generation by source: 14 Sept 2026, 22:00 CDT (UTC-05:00)
SourceOutputShare
Hydro 8 MW 100.0%
Total from these sources8 MW
Net interchange-16 MWnet imports

EIA publishes generation by source 10 or more hours after demand, so this hour can be earlier than the latest demand hour. Net interchange is positive when SPA exports.

Source: U.S. Energy Information Administration (EIA). (US Government work, public domain) Data as of 2026-09-15T03:00:00Z.

Last 30 Days, Hourly

Times in UTC
SPA hourly electricity demand, last 30 days Hourly demand in SPA over the 30 days to 2026-09-15. Demand peaked at 55 MW in the hour starting 2 Sept 2026, 16:00 CDT (UTC-05:00) and averaged 24 MW. 0 15 30 45 60 16 Aug21 Aug26 Aug31 Aug5 Sep10 Sep
Hourly demand in SPA over the 30 days to 2026-09-15. Demand peaked at 55 MW in the hour starting 2 Sept 2026, 16:00 CDT (UTC-05:00) and averaged 24 MW.
Hourly demand through 2026-09-15T16:00Z, MW
SPA hourly electricity demand, last 30 days
Hour starting (UTC)Demand
2026-08-16T17:00Z29 MW
2026-08-16T18:00Z32 MW
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2026-09-15T09:00Z28 MW
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2026-09-15T15:00Z0 MW
2026-09-15T16:00Zn/a
SPA hourly generation by source, last 30 days Hourly generation in SPA from its 1 largest sources over the 30 days to 2026-09-15: hydro 213 GWh. 0 500 1,000 1,500 2,000 16 Aug21 Aug26 Aug31 Aug5 Sep10 Sep
Hourly generation in SPA from its 1 largest sources over the 30 days to 2026-09-15: hydro 213 GWh.
Hourly generation by source through 2026-09-15T16:00Z, MW
SPA hourly generation by source, last 30 days
Hour starting (UTC)Hydro
2026-08-16T17:00Z248 MW
2026-08-16T18:00Z405 MW
2026-08-16T19:00Z931 MW
2026-08-16T20:00Z1,254 MW
2026-08-16T21:00Z1,260 MW
2026-08-16T22:00Z1,347 MW
2026-08-16T23:00Z1,348 MW
2026-08-17T00:00Z1,315 MW
2026-08-17T01:00Z755 MW
2026-08-17T02:00Z234 MW
2026-08-17T03:00Z192 MW
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2026-08-17T05:00Z8 MW
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2026-08-17T15:00Z150 MW
2026-08-17T16:00Z229 MW
2026-08-17T17:00Z505 MW
2026-08-17T18:00Z803 MW
2026-08-17T19:00Z881 MW
2026-08-17T20:00Z1,146 MW
2026-08-17T21:00Z1,520 MW
2026-08-17T22:00Z1,532 MW
2026-08-17T23:00Z1,444 MW
2026-08-18T00:00Z1,329 MW
2026-08-18T01:00Z667 MW
2026-08-18T02:00Z335 MW
2026-08-18T03:00Z136 MW
2026-08-18T04:00Z73 MW
2026-08-18T05:00Z10 MW
2026-08-18T06:00Z8 MW
2026-08-18T07:00Z8 MW
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2026-08-18T13:00Z60 MW
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2026-08-18T15:00Z73 MW
2026-08-18T16:00Z82 MW
2026-08-18T17:00Z197 MW
2026-08-18T18:00Z309 MW
2026-08-18T19:00Z585 MW
2026-08-18T20:00Z1,215 MW
2026-08-18T21:00Z1,391 MW
2026-08-18T22:00Z1,404 MW
2026-08-18T23:00Z1,357 MW
2026-08-19T00:00Z1,065 MW
2026-08-19T01:00Z335 MW
2026-08-19T02:00Z133 MW
2026-08-19T03:00Z11 MW
2026-08-19T04:00Z8 MW
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2026-08-19T16:00Z161 MW
2026-08-19T17:00Z280 MW
2026-08-19T18:00Z676 MW
2026-08-19T19:00Z734 MW
2026-08-19T20:00Z1,022 MW
2026-08-19T21:00Z1,314 MW
2026-08-19T22:00Z1,349 MW
2026-08-19T23:00Z1,326 MW
2026-08-20T00:00Z1,159 MW
2026-08-20T01:00Z693 MW
2026-08-20T02:00Z259 MW
2026-08-20T03:00Z18 MW
2026-08-20T04:00Z8 MW
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2026-08-20T15:00Z40 MW
2026-08-20T16:00Z104 MW
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2026-08-20T18:00Z538 MW
2026-08-20T19:00Z726 MW
2026-08-20T20:00Z932 MW
2026-08-20T21:00Z1,378 MW
2026-08-20T22:00Z1,337 MW
2026-08-20T23:00Z1,242 MW
2026-08-21T00:00Z849 MW
2026-08-21T01:00Z370 MW
2026-08-21T02:00Z122 MW
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2026-08-21T13:00Z57 MW
2026-08-21T14:00Z67 MW
2026-08-21T15:00Z67 MW
2026-08-21T16:00Z79 MW
2026-08-21T17:00Z311 MW
2026-08-21T18:00Z522 MW
2026-08-21T19:00Z753 MW
2026-08-21T20:00Z889 MW
2026-08-21T21:00Z1,267 MW
2026-08-21T22:00Z1,308 MW
2026-08-21T23:00Z1,280 MW
2026-08-22T00:00Z1,022 MW
2026-08-22T01:00Z399 MW
2026-08-22T02:00Z144 MW
2026-08-22T03:00Z12 MW
2026-08-22T04:00Z8 MW
2026-08-22T05:00Z9 MW
2026-08-22T06:00Z7 MW
2026-08-22T07:00Z8 MW
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2026-08-22T15:00Z58 MW
2026-08-22T16:00Z107 MW
2026-08-22T17:00Z136 MW
2026-08-22T18:00Z339 MW
2026-08-22T19:00Z693 MW
2026-08-22T20:00Z772 MW
2026-08-22T21:00Z1,107 MW
2026-08-22T22:00Z1,033 MW
2026-08-22T23:00Z832 MW
2026-08-23T00:00Z574 MW
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2026-08-24T10:00Z133 MW
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2026-08-24T14:00Z79 MW
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2026-08-24T16:00Z82 MW
2026-08-24T17:00Z185 MW
2026-08-24T18:00Z422 MW
2026-08-24T19:00Z691 MW
2026-08-24T20:00Z982 MW
2026-08-24T21:00Z1,412 MW
2026-08-24T22:00Z1,219 MW
2026-08-24T23:00Z1,091 MW
2026-08-25T00:00Z752 MW
2026-08-25T01:00Z380 MW
2026-08-25T02:00Z145 MW
2026-08-25T03:00Z91 MW
2026-08-25T04:00Z85 MW
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2026-08-25T06:00Z9 MW
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2026-08-25T11:00Z46 MW
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2026-08-25T13:00Z56 MW
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2026-08-25T16:00Z78 MW
2026-08-25T17:00Z191 MW
2026-08-25T18:00Z327 MW
2026-08-25T19:00Z796 MW
2026-08-25T20:00Z834 MW
2026-08-25T21:00Z1,196 MW
2026-08-25T22:00Z1,316 MW
2026-08-25T23:00Z1,256 MW
2026-08-26T00:00Z937 MW
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2026-08-26T02:00Z47 MW
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2026-08-26T10:00Z10 MW
2026-08-26T11:00Z43 MW
2026-08-26T12:00Z49 MW
2026-08-26T13:00Z60 MW
2026-08-26T14:00Z63 MW
2026-08-26T15:00Z61 MW
2026-08-26T16:00Z72 MW
2026-08-26T17:00Z188 MW
2026-08-26T18:00Z488 MW
2026-08-26T19:00Z746 MW
2026-08-26T20:00Z760 MW
2026-08-26T21:00Z1,194 MW
2026-08-26T22:00Z1,446 MW
2026-08-26T23:00Z1,440 MW
2026-08-27T00:00Z1,007 MW
2026-08-27T01:00Z509 MW
2026-08-27T02:00Z141 MW
2026-08-27T03:00Z9 MW
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2026-08-27T13:00Z72 MW
2026-08-27T14:00Z78 MW
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2026-08-27T16:00Z86 MW
2026-08-27T17:00Z259 MW
2026-08-27T18:00Z486 MW
2026-08-27T19:00Z755 MW
2026-08-27T20:00Z775 MW
2026-08-27T21:00Z1,397 MW
2026-08-27T22:00Z1,408 MW
2026-08-27T23:00Z1,404 MW
2026-08-28T00:00Z985 MW
2026-08-28T01:00Z502 MW
2026-08-28T02:00Z137 MW
2026-08-28T03:00Z8 MW
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2026-08-28T08:00Z8 MW
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2026-08-28T11:00Z40 MW
2026-08-28T12:00Z43 MW
2026-08-28T13:00Z73 MW
2026-08-28T14:00Z78 MW
2026-08-28T15:00Z79 MW
2026-08-28T16:00Z83 MW
2026-08-28T17:00Z172 MW
2026-08-28T18:00Z290 MW
2026-08-28T19:00Z473 MW
2026-08-28T20:00Z560 MW
2026-08-28T21:00Z1,217 MW
2026-08-28T22:00Z1,276 MW
2026-08-28T23:00Z1,173 MW
2026-08-29T00:00Z643 MW
2026-08-29T01:00Z226 MW
2026-08-29T02:00Z38 MW
2026-08-29T03:00Z7 MW
2026-08-29T04:00Z8 MW
2026-08-29T05:00Z7 MW
2026-08-29T06:00Z8 MW
2026-08-29T07:00Z8 MW
2026-08-29T08:00Z8 MW
2026-08-29T09:00Z8 MW
2026-08-29T10:00Z9 MW
2026-08-29T11:00Z54 MW
2026-08-29T12:00Z42 MW
2026-08-29T13:00Z40 MW
2026-08-29T14:00Z40 MW
2026-08-29T15:00Z45 MW
2026-08-29T16:00Z48 MW
2026-08-29T17:00Z48 MW
2026-08-29T18:00Z47 MW
2026-08-29T19:00Z92 MW
2026-08-29T20:00Z208 MW
2026-08-29T21:00Z868 MW
2026-08-29T22:00Z996 MW
2026-08-29T23:00Z594 MW
2026-08-30T00:00Z404 MW
2026-08-30T01:00Z125 MW
2026-08-30T02:00Z26 MW
2026-08-30T03:00Z8 MW
2026-08-30T04:00Z9 MW
2026-08-30T05:00Z8 MW
2026-08-30T06:00Z8 MW
2026-08-30T07:00Z8 MW
2026-08-30T08:00Z8 MW
2026-08-30T09:00Z8 MW
2026-08-30T10:00Z9 MW
2026-08-30T11:00Z54 MW
2026-08-30T12:00Z44 MW
2026-08-30T13:00Z41 MW
2026-08-30T14:00Z43 MW
2026-08-30T15:00Z43 MW
2026-08-30T16:00Z78 MW
2026-08-30T17:00Z84 MW
2026-08-30T18:00Z83 MW
2026-08-30T19:00Z95 MW
2026-08-30T20:00Z375 MW
2026-08-30T21:00Z926 MW
2026-08-30T22:00Z1,012 MW
2026-08-30T23:00Z1,004 MW
2026-08-31T00:00Z527 MW
2026-08-31T01:00Z134 MW
2026-08-31T02:00Z28 MW
2026-08-31T03:00Z8 MW
2026-08-31T04:00Z10 MW
2026-08-31T05:00Z9 MW
2026-08-31T06:00Z9 MW
2026-08-31T07:00Z9 MW
2026-08-31T08:00Z9 MW
2026-08-31T09:00Z10 MW
2026-08-31T10:00Z11 MW
2026-08-31T11:00Z27 MW
2026-08-31T12:00Z43 MW
2026-08-31T13:00Z58 MW
2026-08-31T14:00Z62 MW
2026-08-31T15:00Z59 MW
2026-08-31T16:00Z69 MW
2026-08-31T17:00Z203 MW
2026-08-31T18:00Z698 MW
2026-08-31T19:00Z1,145 MW
2026-08-31T20:00Z1,080 MW
2026-08-31T21:00Z1,453 MW
2026-08-31T22:00Z1,423 MW
2026-08-31T23:00Z1,283 MW
2026-09-01T00:00Z933 MW
2026-09-01T01:00Z464 MW
2026-09-01T02:00Z54 MW
2026-09-01T03:00Z9 MW
2026-09-01T04:00Z8 MW
2026-09-01T05:00Z7 MW
2026-09-01T06:00Z8 MW
2026-09-01T07:00Z8 MW
2026-09-01T08:00Z7 MW
2026-09-01T09:00Z8 MW
2026-09-01T10:00Z8 MW
2026-09-01T11:00Z27 MW
2026-09-01T12:00Z23 MW
2026-09-01T13:00Z26 MW
2026-09-01T14:00Z29 MW
2026-09-01T15:00Z28 MW
2026-09-01T16:00Z62 MW
2026-09-01T17:00Z148 MW
2026-09-01T18:00Z598 MW
2026-09-01T19:00Z987 MW
2026-09-01T20:00Z1,151 MW
2026-09-01T21:00Z1,485 MW
2026-09-01T22:00Z1,487 MW
2026-09-01T23:00Z1,404 MW
2026-09-02T00:00Z1,071 MW
2026-09-02T01:00Z542 MW
2026-09-02T02:00Z137 MW
2026-09-02T03:00Z12 MW
2026-09-02T04:00Z8 MW
2026-09-02T05:00Z7 MW
2026-09-02T06:00Z8 MW
2026-09-02T07:00Z8 MW
2026-09-02T08:00Z8 MW
2026-09-02T09:00Z8 MW
2026-09-02T10:00Z10 MW
2026-09-02T11:00Z26 MW
2026-09-02T12:00Z26 MW
2026-09-02T13:00Z24 MW
2026-09-02T14:00Z27 MW
2026-09-02T15:00Z30 MW
2026-09-02T16:00Z58 MW
2026-09-02T17:00Z146 MW
2026-09-02T18:00Z497 MW
2026-09-02T19:00Z728 MW
2026-09-02T20:00Z943 MW
2026-09-02T21:00Z1,451 MW
2026-09-02T22:00Z1,462 MW
2026-09-02T23:00Z1,378 MW
2026-09-03T00:00Z1,082 MW
2026-09-03T01:00Z610 MW
2026-09-03T02:00Z239 MW
2026-09-03T03:00Z12 MW
2026-09-03T04:00Z7 MW
2026-09-03T05:00Z8 MW
2026-09-03T06:00Z7 MW
2026-09-03T07:00Z8 MW
2026-09-03T08:00Z8 MW
2026-09-03T09:00Z7 MW
2026-09-03T10:00Z9 MW
2026-09-03T11:00Z28 MW
2026-09-03T12:00Z26 MW
2026-09-03T13:00Z25 MW
2026-09-03T14:00Z27 MW
2026-09-03T15:00Z25 MW
2026-09-03T16:00Z52 MW
2026-09-03T17:00Z145 MW
2026-09-03T18:00Z542 MW
2026-09-03T19:00Z795 MW
2026-09-03T20:00Z1,193 MW
2026-09-03T21:00Z1,464 MW
2026-09-03T22:00Z1,464 MW
2026-09-03T23:00Z1,237 MW
2026-09-04T00:00Z802 MW
2026-09-04T01:00Z362 MW
2026-09-04T02:00Z236 MW
2026-09-04T03:00Z15 MW
2026-09-04T04:00Z8 MW
2026-09-04T05:00Z8 MW
2026-09-04T06:00Z8 MW
2026-09-04T07:00Z8 MW
2026-09-04T08:00Z8 MW
2026-09-04T09:00Z7 MW
2026-09-04T10:00Z8 MW
2026-09-04T11:00Z26 MW
2026-09-04T12:00Z24 MW
2026-09-04T13:00Z24 MW
2026-09-04T14:00Z27 MW
2026-09-04T15:00Z29 MW
2026-09-04T16:00Z63 MW
2026-09-04T17:00Z309 MW
2026-09-04T18:00Z754 MW
2026-09-04T19:00Z909 MW
2026-09-04T20:00Z1,225 MW
2026-09-04T21:00Z1,299 MW
2026-09-04T22:00Z1,439 MW
2026-09-04T23:00Z1,321 MW
2026-09-05T00:00Z1,126 MW
2026-09-05T01:00Z541 MW
2026-09-05T02:00Z237 MW
2026-09-05T03:00Z14 MW
2026-09-05T04:00Z7 MW
2026-09-05T05:00Z8 MW
2026-09-05T06:00Z8 MW
2026-09-05T07:00Z7 MW
2026-09-05T08:00Z8 MW
2026-09-05T09:00Z7 MW
2026-09-05T10:00Z9 MW
2026-09-05T11:00Z23 MW
2026-09-05T12:00Z23 MW
2026-09-05T13:00Z30 MW
2026-09-05T14:00Z35 MW
2026-09-05T15:00Z23 MW
2026-09-05T16:00Z44 MW
2026-09-05T17:00Z307 MW
2026-09-05T18:00Z531 MW
2026-09-05T19:00Z604 MW
2026-09-05T20:00Z861 MW
2026-09-05T21:00Z1,039 MW
2026-09-05T22:00Z1,255 MW
2026-09-05T23:00Z1,239 MW
2026-09-06T00:00Z1,072 MW
2026-09-06T01:00Z608 MW
2026-09-06T02:00Z219 MW
2026-09-06T03:00Z13 MW
2026-09-06T04:00Z8 MW
2026-09-06T05:00Z7 MW
2026-09-06T06:00Z8 MW
2026-09-06T07:00Z8 MW
2026-09-06T08:00Z7 MW
2026-09-06T09:00Z8 MW
2026-09-06T10:00Z9 MW
2026-09-06T11:00Z23 MW
2026-09-06T12:00Z24 MW
2026-09-06T13:00Z27 MW
2026-09-06T14:00Z32 MW
2026-09-06T15:00Z32 MW
2026-09-06T16:00Z45 MW
2026-09-06T17:00Z310 MW
2026-09-06T18:00Z548 MW
2026-09-06T19:00Z609 MW
2026-09-06T20:00Z770 MW
2026-09-06T21:00Z1,169 MW
2026-09-06T22:00Z1,242 MW
2026-09-06T23:00Z1,225 MW
2026-09-07T00:00Z852 MW
2026-09-07T01:00Z611 MW
2026-09-07T02:00Z216 MW
2026-09-07T03:00Z15 MW
2026-09-07T04:00Z8 MW
2026-09-07T05:00Z7 MW
2026-09-07T06:00Z8 MW
2026-09-07T07:00Z8 MW
2026-09-07T08:00Z7 MW
2026-09-07T09:00Z8 MW
2026-09-07T10:00Z8 MW
2026-09-07T11:00Z35 MW
2026-09-07T12:00Z29 MW
2026-09-07T13:00Z30 MW
2026-09-07T14:00Z35 MW
2026-09-07T15:00Z44 MW
2026-09-07T16:00Z49 MW
2026-09-07T17:00Z53 MW
2026-09-07T18:00Z186 MW
2026-09-07T19:00Z454 MW
2026-09-07T20:00Z752 MW
2026-09-07T21:00Z772 MW
2026-09-07T22:00Z872 MW
2026-09-07T23:00Z888 MW
2026-09-08T00:00Z841 MW
2026-09-08T01:00Z321 MW
2026-09-08T02:00Z210 MW
2026-09-08T03:00Z11 MW
2026-09-08T04:00Z7 MW
2026-09-08T05:00Z8 MW
2026-09-08T06:00Z8 MW
2026-09-08T07:00Z8 MW
2026-09-08T08:00Z8 MW
2026-09-08T09:00Z8 MW
2026-09-08T10:00Z10 MW
2026-09-08T11:00Z36 MW
2026-09-08T12:00Z38 MW
2026-09-08T13:00Z38 MW
2026-09-08T14:00Z43 MW
2026-09-08T15:00Z48 MW
2026-09-08T16:00Z54 MW
2026-09-08T17:00Z48 MW
2026-09-08T18:00Z127 MW
2026-09-08T19:00Z855 MW
2026-09-08T20:00Z1,174 MW
2026-09-08T21:00Z1,382 MW
2026-09-08T22:00Z1,379 MW
2026-09-08T23:00Z1,233 MW
2026-09-09T00:00Z1,023 MW
2026-09-09T01:00Z364 MW
2026-09-09T02:00Z228 MW
2026-09-09T03:00Z12 MW
2026-09-09T04:00Z10 MW
2026-09-09T05:00Z10 MW
2026-09-09T06:00Z8 MW
2026-09-09T07:00Z8 MW
2026-09-09T08:00Z8 MW
2026-09-09T09:00Z8 MW
2026-09-09T10:00Z10 MW
2026-09-09T11:00Z36 MW
2026-09-09T12:00Z38 MW
2026-09-09T13:00Z38 MW
2026-09-09T14:00Z43 MW
2026-09-09T15:00Z48 MW
2026-09-09T16:00Z54 MW
2026-09-09T17:00Z48 MW
2026-09-09T18:00Z127 MW
2026-09-09T19:00Z855 MW
2026-09-09T20:00Z1,174 MW
2026-09-09T21:00Z1,382 MW
2026-09-09T22:00Z1,379 MW
2026-09-09T23:00Z1,233 MW
2026-09-10T00:00Z1,023 MW
2026-09-10T01:00Z364 MW
2026-09-10T02:00Z228 MW
2026-09-10T03:00Z12 MW
2026-09-10T04:00Z10 MW
2026-09-10T05:00Z8 MW
2026-09-10T06:00Z8 MW
2026-09-10T07:00Z8 MW
2026-09-10T08:00Z8 MW
2026-09-10T09:00Z8 MW
2026-09-10T10:00Z9 MW
2026-09-10T11:00Z35 MW
2026-09-10T12:00Z38 MW
2026-09-10T13:00Z36 MW
2026-09-10T14:00Z33 MW
2026-09-10T15:00Z34 MW
2026-09-10T16:00Z57 MW
2026-09-10T17:00Z176 MW
2026-09-10T18:00Z203 MW
2026-09-10T19:00Z393 MW
2026-09-10T20:00Z512 MW
2026-09-10T21:00Z1,040 MW
2026-09-10T22:00Z1,320 MW
2026-09-10T23:00Z920 MW
2026-09-11T00:00Z438 MW
2026-09-11T01:00Z270 MW
2026-09-11T02:00Z34 MW
2026-09-11T03:00Z9 MW
2026-09-11T04:00Z8 MW
2026-09-11T05:00Z8 MW
2026-09-11T06:00Z8 MW
2026-09-11T07:00Z9 MW
2026-09-11T08:00Z8 MW
2026-09-11T09:00Z8 MW
2026-09-11T10:00Z9 MW
2026-09-11T11:00Z36 MW
2026-09-11T12:00Z35 MW
2026-09-11T13:00Z33 MW
2026-09-11T14:00Z31 MW
2026-09-11T15:00Z34 MW
2026-09-11T16:00Z54 MW
2026-09-11T17:00Z37 MW
2026-09-11T18:00Z41 MW
2026-09-11T19:00Z298 MW
2026-09-11T20:00Z435 MW
2026-09-11T21:00Z637 MW
2026-09-11T22:00Z665 MW
2026-09-11T23:00Z449 MW
2026-09-12T00:00Z255 MW
2026-09-12T01:00Z35 MW
2026-09-12T02:00Z28 MW
2026-09-12T03:00Z12 MW
2026-09-12T04:00Z8 MW
2026-09-12T05:00Z8 MW
2026-09-12T06:00Z8 MW
2026-09-12T07:00Z9 MW
2026-09-12T08:00Z8 MW
2026-09-12T09:00Z8 MW
2026-09-12T10:00Z9 MW
2026-09-12T11:00Z36 MW
2026-09-12T12:00Z35 MW
2026-09-12T13:00Z33 MW
2026-09-12T14:00Z31 MW
2026-09-12T15:00Z34 MW
2026-09-12T16:00Z54 MW
2026-09-12T17:00Z37 MW
2026-09-12T18:00Z41 MW
2026-09-12T19:00Z298 MW
2026-09-12T20:00Z435 MW
2026-09-12T21:00Z637 MW
2026-09-12T22:00Z665 MW
2026-09-12T23:00Z449 MW
2026-09-13T00:00Z255 MW
2026-09-13T01:00Z35 MW
2026-09-13T02:00Z28 MW
2026-09-13T03:00Z12 MW
2026-09-13T04:00Z8 MW
2026-09-13T05:00Z8 MW
2026-09-13T06:00Z8 MW
2026-09-13T07:00Z8 MW
2026-09-13T08:00Z8 MW
2026-09-13T09:00Z8 MW
2026-09-13T10:00Z8 MW
2026-09-13T11:00Z19 MW
2026-09-13T12:00Z19 MW
2026-09-13T13:00Z12 MW
2026-09-13T14:00Z15 MW
2026-09-13T15:00Z15 MW
2026-09-13T16:00Z17 MW
2026-09-13T17:00Z20 MW
2026-09-13T18:00Z22 MW
2026-09-13T19:00Z78 MW
2026-09-13T20:00Z87 MW
2026-09-13T21:00Z266 MW
2026-09-13T22:00Z666 MW
2026-09-13T23:00Z481 MW
2026-09-14T00:00Z219 MW
2026-09-14T01:00Z20 MW
2026-09-14T02:00Z18 MW
2026-09-14T03:00Z8 MW
2026-09-14T04:00Z7 MW
2026-09-14T05:00Z8 MW
2026-09-14T06:00Z8 MW
2026-09-14T07:00Z8 MW
2026-09-14T08:00Z8 MW
2026-09-14T09:00Z8 MW
2026-09-14T10:00Z8 MW
2026-09-14T11:00Z29 MW
2026-09-14T12:00Z27 MW
2026-09-14T13:00Z21 MW
2026-09-14T14:00Z20 MW
2026-09-14T15:00Z22 MW
2026-09-14T16:00Z53 MW
2026-09-14T17:00Z23 MW
2026-09-14T18:00Z40 MW
2026-09-14T19:00Z273 MW
2026-09-14T20:00Z337 MW
2026-09-14T21:00Z465 MW
2026-09-14T22:00Z785 MW
2026-09-14T23:00Z654 MW
2026-09-15T00:00Z373 MW
2026-09-15T01:00Z41 MW
2026-09-15T02:00Z27 MW
2026-09-15T03:00Z8 MW
2026-09-15T04:00Zn/a
2026-09-15T05:00Zn/a
2026-09-15T06:00Zn/a
2026-09-15T07:00Zn/a
2026-09-15T08:00Zn/a
2026-09-15T09:00Zn/a
2026-09-15T10:00Zn/a
2026-09-15T11:00Zn/a
2026-09-15T12:00Zn/a
2026-09-15T13:00Zn/a
2026-09-15T14:00Zn/a
2026-09-15T15:00Zn/a
2026-09-15T16:00Zn/a

Source: U.S. Energy Information Administration (EIA). (US Government work, public domain) Data as of 2026-09-15T16:00Z.

Day by Day

Daily totals, Central time dates, through 2026-09-13
SPA daily electricity demand, 2025-08-10 to 2026-09-13 Daily demand in SPA from 2025-08-10 (10 August 2025) to 2026-09-13 (13 September 2026), in GWh. The highest day was 2026-02-01 (1 February 2026) at 946 MWh; the average was 567 MWh a day. 0 0 1 1 1 Aug 2025Oct 2025Dec 2025Feb 2026Apr 2026Jun 2026Aug 2026
Daily demand in SPA from 2025-08-10 (10 August 2025) to 2026-09-13 (13 September 2026), in GWh. The highest day was 2026-02-01 (1 February 2026) at 946 MWh; the average was 567 MWh a day.
Daily totals through 2026-09-13, GWh
SPA daily electricity demand, 2025-08-10 to 2026-09-13
Date (Central time)Demand
2025-08-10608 MWh
2025-08-11664 MWh
2025-08-12660 MWh
2025-08-13641 MWh
2025-08-14596 MWh
2025-08-15662 MWh
2025-08-16596 MWh
2025-08-17567 MWh
2025-08-18581 MWh
2025-08-19633 MWh
2025-08-20555 MWh
2025-08-21558 MWh
2025-08-22556 MWh
2025-08-23438 MWh
2025-08-24485 MWh
2025-08-25433 MWh
2025-08-26451 MWh
2025-08-27467 MWh
2025-08-28534 MWh
2025-08-29462 MWh
2025-08-30463 MWh
2025-08-31n/a
2025-09-01528 MWh
2025-09-02441 MWh
2025-09-03399 MWh
2025-09-04477 MWh
2025-09-05528 MWh
2025-09-06377 MWh
2025-09-07465 MWh
2025-09-08480 MWh
2025-09-09435 MWh
2025-09-10451 MWh
2025-09-11491 MWh
2025-09-12566 MWh
2025-09-13537 MWh
2025-09-14528 MWh
2025-09-15449 MWh
2025-09-16514 MWh
2025-09-17510 MWh
2025-09-18408 MWh
2025-09-19380 MWh
2025-09-20389 MWh
2025-09-21380 MWh
2025-09-22488 MWh
2025-09-23389 MWh
2025-09-24356 MWh
2025-09-25440 MWh
2025-09-26459 MWh
2025-09-27432 MWh
2025-09-28428 MWh
2025-09-29441 MWh
2025-09-30421 MWh
2025-10-01467 MWh
2025-10-02487 MWh
2025-10-03464 MWh
2025-10-04538 MWh
2025-10-05472 MWh
2025-10-06405 MWh
2025-10-07355 MWh
2025-10-08355 MWh
2025-10-09425 MWh
2025-10-10471 MWh
2025-10-11333 MWh
2025-10-12503 MWh
2025-10-13377 MWh
2025-10-14381 MWh
2025-10-15483 MWh
2025-10-16574 MWh
2025-10-17481 MWh
2025-10-18412 MWh
2025-10-19435 MWh
2025-10-20507 MWh
2025-10-21401 MWh
2025-10-22379 MWh
2025-10-23375 MWh
2025-10-24400 MWh
2025-10-25389 MWh
2025-10-26350 MWh
2025-10-27345 MWh
2025-10-28401 MWh
2025-10-29458 MWh
2025-10-30447 MWh
2025-10-31311 MWh
2025-11-01375 MWh
2025-11-02335 MWh
2025-11-03n/a
2025-11-04521 MWh
2025-11-05496 MWh
2025-11-06n/a
2025-11-07n/a
2025-11-08n/a
2025-11-09n/a
2025-11-10n/a
2025-11-11504 MWh
2025-11-12410 MWh
2025-11-13n/a
2025-11-14n/a
2025-11-15n/a
2025-11-16n/a
2025-11-17n/a
2025-11-18n/a
2025-11-19n/a
2025-11-20n/a
2025-11-21n/a
2025-11-22n/a
2025-11-23n/a
2025-11-24n/a
2025-11-25n/a
2025-11-26n/a
2025-11-27n/a
2025-11-28n/a
2025-11-29n/a
2025-11-30467 MWh
2025-12-01n/a
2025-12-02n/a
2025-12-03n/a
2025-12-04n/a
2025-12-05n/a
2025-12-06n/a
2025-12-07n/a
2025-12-08n/a
2025-12-09n/a
2025-12-10n/a
2025-12-11536 MWh
2025-12-12425 MWh
2025-12-13562 MWh
2025-12-14591 MWh
2025-12-15659 MWh
2025-12-16600 MWh
2025-12-17568 MWh
2025-12-18572 MWh
2025-12-19626 MWh
2025-12-20622 MWh
2025-12-21n/a
2025-12-22n/a
2025-12-23n/a
2025-12-24n/a
2025-12-25n/a
2025-12-26n/a
2025-12-27n/a
2025-12-28n/a
2025-12-29n/a
2025-12-30n/a
2025-12-31n/a
2026-01-01498 MWh
2026-01-02509 MWh
2026-01-03533 MWh
2026-01-04642 MWh
2026-01-05573 MWh
2026-01-06415 MWh
2026-01-07596 MWh
2026-01-08683 MWh
2026-01-09491 MWh
2026-01-10662 MWh
2026-01-11527 MWh
2026-01-12638 MWh
2026-01-13573 MWh
2026-01-14629 MWh
2026-01-15552 MWh
2026-01-16673 MWh
2026-01-17543 MWh
2026-01-18490 MWh
2026-01-19710 MWh
2026-01-20612 MWh
2026-01-21556 MWh
2026-01-22521 MWh
2026-01-23800 MWh
2026-01-24790 MWh
2026-01-25743 MWh
2026-01-26702 MWh
2026-01-27641 MWh
2026-01-28578 MWh
2026-01-29769 MWh
2026-01-30778 MWh
2026-01-31765 MWh
2026-02-01946 MWh
2026-02-02876 MWh
2026-02-03820 MWh
2026-02-04616 MWh
2026-02-05609 MWh
2026-02-06608 MWh
2026-02-07665 MWh
2026-02-08650 MWh
2026-02-09652 MWh
2026-02-10781 MWh
2026-02-11530 MWh
2026-02-12653 MWh
2026-02-13833 MWh
2026-02-14571 MWh
2026-02-15598 MWh
2026-02-16709 MWh
2026-02-17713 MWh
2026-02-18637 MWh
2026-02-19711 MWh
2026-02-20568 MWh
2026-02-21588 MWh
2026-02-22620 MWh
2026-02-23649 MWh
2026-02-24754 MWh
2026-02-25589 MWh
2026-02-26517 MWh
2026-02-27481 MWh
2026-02-28542 MWh
2026-03-01552 MWh
2026-03-02635 MWh
2026-03-03644 MWh
2026-03-04522 MWh
2026-03-05558 MWh
2026-03-06698 MWh
2026-03-07543 MWh
2026-03-08585 MWh
2026-03-09664 MWh
2026-03-10684 MWh
2026-03-11588 MWh
2026-03-12623 MWh
2026-03-13532 MWh
2026-03-14430 MWh
2026-03-15560 MWh
2026-03-16546 MWh
2026-03-17595 MWh
2026-03-18537 MWh
2026-03-19484 MWh
2026-03-20469 MWh
2026-03-21425 MWh
2026-03-22586 MWh
2026-03-23525 MWh
2026-03-24442 MWh
2026-03-25549 MWh
2026-03-26578 MWh
2026-03-27568 MWh
2026-03-28435 MWh
2026-03-29601 MWh
2026-03-30623 MWh
2026-03-31566 MWh
2026-04-01416 MWh
2026-04-02606 MWh
2026-04-03671 MWh
2026-04-04706 MWh
2026-04-05470 MWh
2026-04-06572 MWh
2026-04-07521 MWh
2026-04-08490 MWh
2026-04-09531 MWh
2026-04-10505 MWh
2026-04-11607 MWh
2026-04-12711 MWh
2026-04-13786 MWh
2026-04-14684 MWh
2026-04-15579 MWh
2026-04-16573 MWh
2026-04-17788 MWh
2026-04-18707 MWh
2026-04-19628 MWh
2026-04-20648 MWh
2026-04-21533 MWh
2026-04-22573 MWh
2026-04-23567 MWh
2026-04-24455 MWh
2026-04-25498 MWh
2026-04-26438 MWh
2026-04-27471 MWh
2026-04-28543 MWh
2026-04-29524 MWh
2026-04-30484 MWh
2026-05-01527 MWh
2026-05-02503 MWh
2026-05-03517 MWh
2026-05-04657 MWh
2026-05-05589 MWh
2026-05-06660 MWh
2026-05-07584 MWh
2026-05-08664 MWh
2026-05-09533 MWh
2026-05-10549 MWh
2026-05-11537 MWh
2026-05-12615 MWh
2026-05-13529 MWh
2026-05-14603 MWh
2026-05-15654 MWh
2026-05-16638 MWh
2026-05-17606 MWh
2026-05-18568 MWh
2026-05-19426 MWh
2026-05-20n/a
2026-05-21n/a
2026-05-22n/a
2026-05-23n/a
2026-05-24559 MWh
2026-05-25629 MWh
2026-05-26600 MWh
2026-05-27708 MWh
2026-05-28571 MWh
2026-05-29599 MWh
2026-05-30649 MWh
2026-05-31671 MWh
2026-06-01622 MWh
2026-06-02637 MWh
2026-06-03604 MWh
2026-06-04648 MWh
2026-06-05607 MWh
2026-06-06469 MWh
2026-06-07524 MWh
2026-06-08569 MWh
2026-06-09640 MWh
2026-06-10693 MWh
2026-06-11661 MWh
2026-06-12607 MWh
2026-06-13581 MWh
2026-06-14513 MWh
2026-06-15480 MWh
2026-06-16572 MWh
2026-06-17626 MWh
2026-06-18618 MWh
2026-06-19549 MWh
2026-06-20524 MWh
2026-06-21491 MWh
2026-06-22656 MWh
2026-06-23456 MWh
2026-06-24457 MWh
2026-06-25585 MWh
2026-06-26521 MWh
2026-06-27650 MWh
2026-06-28729 MWh
2026-06-29753 MWh
2026-06-30658 MWh
2026-07-01729 MWh
2026-07-02717 MWh
2026-07-03656 MWh
2026-07-04603 MWh
2026-07-05525 MWh
2026-07-06581 MWh
2026-07-07572 MWh
2026-07-08594 MWh
2026-07-09609 MWh
2026-07-10628 MWh
2026-07-11527 MWh
2026-07-12586 MWh
2026-07-13537 MWh
2026-07-14542 MWh
2026-07-15537 MWh
2026-07-16603 MWh
2026-07-17652 MWh
2026-07-18659 MWh
2026-07-19634 MWh
2026-07-20585 MWh
2026-07-21614 MWh
2026-07-22298 MWh
2026-07-23287 MWh
2026-07-24562 MWh
2026-07-25748 MWh
2026-07-26848 MWh
2026-07-27854 MWh
2026-07-28802 MWh
2026-07-29659 MWh
2026-07-30635 MWh
2026-07-31597 MWh
2026-08-01552 MWh
2026-08-02512 MWh
2026-08-03597 MWh
2026-08-04570 MWh
2026-08-05557 MWh
2026-08-06598 MWh
2026-08-07667 MWh
2026-08-08527 MWh
2026-08-09691 MWh
2026-08-10686 MWh
2026-08-11762 MWh
2026-08-12808 MWh
2026-08-13866 MWh
2026-08-14795 MWh
2026-08-15778 MWh
2026-08-16653 MWh
2026-08-17567 MWh
2026-08-18632 MWh
2026-08-19664 MWh
2026-08-20568 MWh
2026-08-21649 MWh
2026-08-22549 MWh
2026-08-23507 MWh
2026-08-24576 MWh
2026-08-25570 MWh
2026-08-26502 MWh
2026-08-27491 MWh
2026-08-28427 MWh
2026-08-29572 MWh
2026-08-30646 MWh
2026-08-31665 MWh
2026-09-01692 MWh
2026-09-02741 MWh
2026-09-03722 MWh
2026-09-04677 MWh
2026-09-05576 MWh
2026-09-06499 MWh
2026-09-07506 MWh
2026-09-08636 MWh
2026-09-09615 MWh
2026-09-10550 MWh
2026-09-11522 MWh
2026-09-12501 MWh
2026-09-13515 MWh

Source: U.S. Energy Information Administration (EIA). (US Government work, public domain) Data as of 2026-09-13. Daily totals are EIA's own daily aggregation in the balancing authority's reporting time zone.

Year by Year

Summed from EIA daily operator data
YearDemandNet generationLargest sourceDays reported
2026 (partial) 152 GWh 2.89 TWh Hydro 100.0% 256
2025 (partial) 164 GWh 4.79 TWh Hydro 100.0% 319
2024 197 GWh 3.85 TWh Hydro 56.6% 366
2023 410 GWh 4.27 TWh Hydro 85.6% 365
2022 (partial) 563 GWh 5.86 TWh Hydro 74.4% 359
2021 574 GWh 7.42 TWh Hydro 76.9% 365
2020 598 GWh 8.05 TWh Hydro 79.6% 366
2019 655 GWh 8.60 TWh Hydro 81.1% 365

A year is partial when EIA has not published every day; 2024 is the latest complete year. Operator totals differ slightly from annual statistics, which are compiled later from plant surveys.

Source: U.S. Energy Information Administration (EIA). (US Government work, public domain) Data as of 2026-09-13.

Records

From EIA operator data held by World Power Monitor
RecordValueWhen
Highest daily demand, 2019 onward2.80 GWh2021-02-15 (15 February 2021)
Highest hourly demand since 2026-06-16 (16 June 2026)59 MW17 Jun 2026, 11:00 CDT (UTC-05:00)
Highest solar share of a day's generation, 2019 onward100.0%2024-06-03 (3 June 2024)
Highest wind share of a day's generation, 2019 onward100.0%2024-06-03 (3 June 2024)

Source: U.S. Energy Information Administration (EIA). (US Government work, public domain) Data as of 2026-09-13.

Power Flows With Neighbours

Net totals, 2026-08-15 (15 August 2026) to 2026-09-13 (13 September 2026)
NeighbourDirectionNet energy
SPP SPA exports 98.7 GWh
AECI SPA exports 86.7 GWh
MISO SPA exports 51.6 GWh
SIKE SPA imports 47.2 GWh

Source: U.S. Energy Information Administration (EIA). (US Government work, public domain) Data as of 2026-09-13.