Idaho Power peak demand
Idaho Power's all-time summer and winter peak demand in megawatts as each annual report to the SEC states it, with the date of each record, and the year's own peak where printed.
Figures
Megawatts
Source: IDACORP, Inc. and Idaho Power Company, Form 10-K, peak demand. Data period 2025. Published .
Records
Every peak the reports print
Every peak demand figure an annual report prints: all-time records with the date they were set, and the year's own peak where a report gives one.
Data table (29 rows)
| Year | Season | Peak (MW) | Date | Kind |
|---|---|---|---|---|
| 1998 | Summer | 2,747 | n/a | annual |
| 1999 | Summer | 2,839 | n/a | annual |
| 2000 | Summer | 2,919 | n/a | annual |
| 2001 | Summer | 2,570 | n/a | annual |
| 2002 | Summer | 2,963 | n/a | annual |
| 2002 | Summer | 2,963 | July 12, 2002 | record |
| 2003 | Summer | 2,944 | n/a | annual |
| 2004 | Summer | 2,843 | n/a | annual |
| 2004 | Winter | 2,196 | January 5, 2004 | annual |
| 2005 | Summer | 2,961 | n/a | annual |
| 2005 | Winter | 2,345 | December 15, 2005 | annual |
| 2006 | Summer | 3,050 | June 27, 2006 | record |
| 2006 | Summer | 3,084 | July 24, 2006 | record |
| 2006 | Winter | 2,318 | December 18, 2006 | annual |
| 2007 | Summer | 3,193 | July 13, 2007 | record |
| 2008 | Summer | 3,214 | June 30, 2008 | record |
| 2008 | Winter | 2,464 | January 24, 2008 | record |
| 2009 | Winter | 2,527 | December 10, 2009 | record |
| 2011 | Summer | 2,973 | n/a | annual |
| 2012 | Summer | 3,245 | July 12, 2012 | record |
| 2013 | Summer | 3,407 | July 2, 2013 | record |
| 2015 | Summer | 3,402 | n/a | annual |
| 2016 | Summer | 3,299 | n/a | annual |
| 2017 | Summer | 3,422 | July 7, 2017 | record |
| 2021 | Summer | 3,751 | June 30, 2021 | record |
| 2022 | Winter | 2,574 | December 19, 2022 | record |
| 2022 | Winter | 2,604 | December 22, 2022 | record |
| 2024 | Summer | 3,793 | July 22, 2024 | record |
| 2024 | Winter | 2,719 | January 16, 2024 | record |
Source: IDACORP, Inc. and Idaho Power Company, Form 10-K, peak demand. Published .
Pages built on this dataset
Publisher
- Organization
- IDACORP, Inc. and Idaho Power Company
- Publisher’s dataset
- Form 10-K, peak demand
- File or API used
- https://data.sec.gov/submissions/CIK0001057877.json
- Methodology
- https://www.sec.gov/Archives/edgar/data/1057877/000105787726000028/ida-20251231.htm
Coverage
- Geography
- Idaho Power's service area: southern Idaho and part of eastern Oregon, stored under Idaho
- Time coverage
- 2003-2025 (summer record), 2007-2025 (winter record); printed annual peaks from 1998
- Update frequency
- Annual; the 10-K for a year is filed in February of the next
- Published
- February 19, 2026
- Retrieved
- September 10, 2026
- License of the records
- Public record. SEC filing by a registrant; the figures are the registrant's.
- Rows
- 42 observations, 29 records, 2003-2025
Measures
| Measure | What it measures | Unit |
|---|---|---|
| Idaho Power all-time peak demand | Idaho Power's all-time system peak demand in megawatts as stated in the annual report for the year, by season: the highest hourly load the utility had served as of that report. It rises only in a year that set a record. | mw |
Record fields
Every peak demand figure an annual report prints: all-time records with the date they were set, and the year's own peak where a report gives one.
year: Year the peak occurred.season: Summer (the report's system peak) or Winter.megawatts: Hourly peak demand in megawatts as printed.date: Date the peak was set, as printed; absent when the report gives only the year.kind: record for an all-time high, annual for a year's own peak that was not a record.filing: Fiscal year of the report the sentence is from.sentence: The sentence of the report the figure was read from.
Caveats
- The series is the all-time record as each year's report states it, not the year's peak. It steps up in a year that set a record and repeats the prior figure otherwise. The observation's period is the fiscal year of the report; the date the record was set is in the table.
- The year's own peak is printed only in some reports (none for 2009, 2010, 2014, 2018 to 2020, 2023 and 2025), so annual peaks are kept in the table as printed and not carried as a series.
- The scope is Idaho Power's system, which serves southern Idaho and a corner of eastern Oregon; Rocky Mountain Power's eastern Idaho load and the northern cooperatives are not in it.
- Peak demand is hourly system load as the report states it; several reports note that demand response programs reduced the figure at the hour of the peak.
- The report calls the summer record the system peak; a 2006 report notes a record set in June and surpassed in July of the same year, and the 2022 report a winter record set on December 19 and surpassed on December 22, so both figures are in the table.
- Figures are taken from the sentences of the report, not from a table; a report that changes its wording fails the puller rather than silently missing a year.
How to cite
Understand Idaho, “Form 10-K, peak demand”, compiled from IDACORP, Inc. and Idaho Power Company, Form 10-K, peak demand. Retrieved September 10, 2026. https://understandidaho.com/data/idacorp-10k-peak-demand/.
Cite IDACORP, Inc. and Idaho Power Company directly for the figures themselves.
This page was last updated .