States › California › Imperial Irrigation District
public power district · EIA utility 9216
Imperial Irrigation District
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Annual figures: Form EIA-861 for 2024, final release. Monthly state figures run to July 2026.
Imperial Irrigation District serves 142,078 residential customers in California as a public power district, according to its 2024 Form EIA-861 filing, with a service territory that touches 3 counties.
Its average residential price that year was 17.91¢ per kilowatthour, 44% below the California average of 31.97¢ and 8.7% above the US average of 16.48¢. The figure is residential revenue divided by residential sales, so it folds in fixed charges, riders and every rate schedule the utility bills under.
That works out to an average residential bill of $207.56 a month on average use of 1,159 kWh a month. Across California the average bill was $160.86 on 503 kWh, so a bill gap reflects how much power households use as well as what each kilowatthour costs.
For reliability it reported a SAIDI of 61.0 minutes per customer with major event days included and 61.0 minutes with them excluded, calculated under IEEE 1366 standard. The median among California utilities reporting was 74.0 minutes with major event days; this utility's figure is 18% below that median.
The average price is up 45.4% on 2019, against up 66.9% for California as a whole, and up 1.9% on 2023.
Compared with California, the US and other political subdivisions and public power districts
| Measure, 2024 | This utility | Political subdivisions and public power districts, US median | California | United States |
|---|---|---|---|---|
| Average residential price per kWh | 17.91¢ | 10.69¢ | 31.97¢ | 16.48¢ |
| Average monthly residential bill | $207.56 | $130.41 | $160.86 | $142.26 |
| Average monthly use, kWh | 1,159 | 1,216 | 503 | 863 |
| Residential price change, 1 year | +1.9% | — | +8.3% | +3.0% |
| Residential price change, 5 years | +45.4% | — | +66.9% | +26.7% |
| SAIDI, all events (minutes) | 61.0 | 167.0 | 74.0 median | 184.5 median |
| SAIDI, without major event days | 61.0 | 85.7 | 50.4 median | 99.8 median |
State and US prices, bills and use are EIA's own averages over every customer. The ownership column and the reliability columns are medians across utilities with at least 1,000 residential customers, computed on this site from the final 2024 file. Among the 5 filings by political subdivisions and public power districts in California, the median price was 17.91¢. In California this utility's price ranks 23 of 30, counting from the highest.
Average price by year
Imperial Irrigation DistrictCalifornia averageUS average
Year by year
| Year | ¢ per kWh | California ¢ | Monthly bill | kWh a month | Residential customers | All sales |
|---|---|---|---|---|---|---|
| 2024 | 17.91¢ | 31.97¢ | $207.56 | 1,159 | 142,078 | 3.6 TWh |
| 2023 | 17.58¢ | 29.51¢ | $188.98 | 1,075 | 140,906 | 3.4 TWh |
| 2022 | 15.60¢ | 25.84¢ | $182.17 | 1,167 | 139,162 | 3.6 TWh |
| 2021 | 14.42¢ | 22.82¢ | $166.53 | 1,155 | 137,541 | 3.5 TWh |
| 2020 | 12.54¢ | 20.45¢ | $148.69 | 1,186 | 135,828 | 3.5 TWh |
| 2019 | 12.32¢ | 19.15¢ | $129.93 | 1,055 | 134,781 | 3.3 TWh |
| 2018 | 12.15¢ | 18.84¢ | $136.85 | 1,126 | 133,668 | 3.5 TWh |
| 2017 | 12.93¢ | 18.31¢ | $145.12 | 1,122 | 132,632 | 3.4 TWh |
| 2016 | 12.50¢ | 17.39¢ | $142.34 | 1,138 | 128,635 | 3.4 TWh |
| 2015 | 13.19¢ | 16.99¢ | $146.72 | 1,113 | 130,257 | 3.4 TWh |
| 2014 | 12.19¢ | 16.25¢ | $136.15 | 1,116 | 129,973 | 3.4 TWh |
| 2013 | 13.19¢ | 16.23¢ | $131.29 | 996 | 142,550 | 3.4 TWh |
Bundled residential service only in the price, bill and use columns. Bill = residential revenue ÷ customers ÷ 12; use = residential sales ÷ customers ÷ 12.
Month by month
Imperial Irrigation DistrictCalifornia average
Sales by sector, 2024
| Sector | Customers | Sales | Share of sales | Revenue | ¢ per kWh, bundled |
|---|---|---|---|---|---|
| Residential | 142,078 | 2 TWh | 54% | $353,871,000 | 17.91¢ |
| Commercial | 21,915 | 1.6 TWh | 43% | $288,059,000 | 18.21¢ |
| Industrial | 809 | 88.4 GWh | 2% | $18,371,000 | 20.79¢ |
Customers, sales and revenue count every service type the utility reported (bundled, energy-only and delivery-only). The price column uses bundled service alone, because part-bill revenue would understate it. Sources of energy: 4 TWh in total, of which 32% was its own net generation and 2.7 TWh was bought wholesale; summer peak demand 1,177 MW.
Reliability
Minutes of sustained interruption per customer in 2024, as the utility reported them under IEEE 1366 standard. SAIFI: 0.69 interruptions per customer with major event days, 0.69 without; CAIDI 88.3 minutes per interruption. EIA's California total across all reporting utilities was 279.6 minutes with major event days and 158.2 without. Major event days are storms and similar events that a utility's chosen method sets apart; methods differ, so treat comparisons as approximate. What SAIDI and SAIFI mean.
| Year | SAIDI, all events | SAIDI, no major events | SAIFI, all events | SAIFI, no major events | Method |
|---|---|---|---|---|---|
| 2024 | 61.0 | 61.0 | 0.69 | 0.69 | IEEE 1366 |
| 2023 | 164.4 | 70.7 | 0.94 | 0.75 | IEEE 1366 |
| 2022 | 64.5 | 54.5 | 0.72 | 0.68 | IEEE 1366 |
| 2021 | 116.2 | 70.6 | 0.70 | 0.66 | IEEE 1366 |
| 2020 | 72.1 | 58.0 | 0.61 | 0.58 | IEEE 1366 |
| 2019 | 59.3 | 53.9 | 0.53 | 0.51 | IEEE 1366 |
| 2018 | 58.9 | 58.9 | 0.58 | 0.58 | IEEE 1366 |
| 2017 | 64.2 | 48.8 | 0.70 | 0.61 | IEEE 1366 |
| 2016 | 78.1 | 55.7 | 0.79 | 0.60 | IEEE 1366 |
| 2015 | 75.8 | 52.8 | 0.91 | 0.61 | IEEE 1366 |
| 2014 | 65.0 | 43.0 | 1.00 | 1.00 | IEEE 1366 |
| 2013 | 62.0 | 40.0 | 1.00 | 1.00 | IEEE 1366 |
Generation at plants it operates, 2025
- Natural gas 85.9% 1.1 TWh
- Hydro 11.2% 147.6 GWh
- Solar 2.8% 37.3 GWh
Net generation of 1.3 TWh at power plants this utility operates, from Form EIA-923. It is not the mix delivered to customers: utilities also buy power wholesale (2.7 TWh in 2024), sell generation to others and may co-own plants that another company operates.
Counties in its service territory
Counties the utility listed on Form EIA-861 for 2024. Listing a county does not mean the utility serves all of it.
Other utilities in California
| Utility | Ownership | Residential customers | ¢ per kWh | Monthly bill | SAIDI, all events | SAIDI, no major events |
|---|---|---|---|---|---|---|
| Modesto Irrigation District | Public power district | 103,650 | 21.78¢ | $176.01 | 58.2 | 42.8 |
| Turlock Irrigation District | Public power district | 80,575 | 16.34¢ | $140.80 | 74.0 | 49.0 |
| Sacramento Municipal Util Dist | Public power district | 592,557 | 17.87¢ | $125.54 | 228.0 | 44.4 |
| Merced Irrigation District | Public power district | 11,366 | 24.25¢ | $155.60 | — | — |
| City of Anaheim | Municipal | 105,839 | 17.11¢ | $79.86 | 46.3 | 46.3 |
| City of Riverside | Municipal | 100,450 | 20.20¢ | $128.68 | 76.6 | 76.6 |
| City of Glendale | Municipal | 77,563 | 33.81¢ | $139.11 | 159.9 | 159.9 |
| City of Roseville | Municipal | 63,052 | 18.66¢ | $134.32 | 23.2 | 21.5 |
All California utilities · Political subdivisions and public power districts nationwide
Questions and answers
How much does electricity cost from Imperial Irrigation District?
Residential customers paid an average of 17.91¢ per kilowatthour in 2024. EIA derives this by dividing residential revenue by residential sales; it is an average across all rate schedules and charges, not a tariff rate.
How does that compare with California?
The California average residential price in 2024 was 31.97¢ and the US average 16.48¢; Imperial Irrigation District was 44% below the state figure. Among 30 utility filings with a bundled residential price in California, it had the 23rd highest.
What is the average Imperial Irrigation District bill?
$207.56 a month in 2024, on average residential use of 1,159 kWh a month (annual revenue and sales divided by customers and by twelve). The California average was $160.86 on 503 kWh.
How reliable is Imperial Irrigation District service?
It reported 61.0 minutes of interruption per customer (SAIDI) including major event days and 61.0 minutes excluding them, with 0.69 interruptions per customer (SAIFI) in 2024. Utilities calculate these under differing methods, so comparisons are approximate.
Is the Imperial Irrigation District price rising?
The average residential price was up 1.9% in 2024 compared with 2023 and up 45.4% compared with 2019.
Which counties does Imperial Irrigation District serve?
Its Form EIA-861 service territory lists 3 counties: Imperial County, CA, Riverside County, CA and San Diego County, CA. A county can appear in several utilities' territories.
Provenance
Source: U.S. Energy Information Administration. Annual figures are from Form EIA-861 (sales to ultimate customers, reliability, operational data and service territory files), final release for 2024, respondent "Imperial Irrigation District", utility number 9216. Monthly utility figures are from the Form EIA-861M sample. State and US averages are from the Form EIA-861M sales and revenue workbook, published through July 2026. Generation by fuel is from Form EIA-923, 2025 final. All are US government works in the public domain. Page built 30 Sep 2026. Errors in processing are corrected at the next build; see corrections. For tariffs and rate schedules, consult the utility or the state utility commission.