Drop 4
3675 E. Highway 98, Holtville, CA 92250Plant Summary Information
Drop 4 is ranked #73 out of 207 hydroelectric power plants in California in terms of total annual net electricity generation.
Drop 4 is comprised of 2 generators and generated 11.9 GWh during the 3-month period between September 2025 to December 2025.
| Plant Name | Drop 4 |
|---|---|
| Utility Name | Imperial Irrigation District |
| Location | Imperial County, CA |
| Initial Operation Date | February 1941 |
| Last Update | Dec 2025 |
| Annual Generation | 74.9 GWh |
| Annual Consumption | 264.6 k MMBtu |
| Ranked #3,812 out of 13,081 Power Plants Nationwide | |
| Ranked #391 out of 1,311 Water Power Plants Nationwide | |
| Ranked #390 out of 1,606 California Power Plants | |
| Ranked #73 out of 207 California Water Power Plants | |
| Fuel Types | Water |
Map of Drop 4
Full Screen MapRegister Now for Comprehensive Access
Subscribe now to access all power plant data, utility information, FERC EQR data, and more for Drop 4.
Monthly Net Generation for Drop 4
Monthly Plant Fuel Consumption for Drop 4
Drop 4 Details
| Summary Information | |
|---|---|
| Plant Name | Drop 4 (387) |
| Plant Address | 3675 E. Highway 98, Holtville, CA 92250 |
| Utility | Imperial Irrigation District (9216) |
| Latitude, Longitude | 32.70534, -115.21907 |
| Generation Dates on File | Jan 2001 to Dec 2025 |
| Initial Operation Date | February 1941 |
| Annual Generation | 74.9 GWh |
| Fuel Types | Water |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | No |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Regulated |
| NERC Region | WECC |
| Balancing Authority | Imperial Irrigation District (IID) |
| NAICS Code | Utilities (22) |
| Sector | Electric Utility (1) |
| Water Source | Well & Canal Filtered |
| Ash Impoundment | |
| Transmission / Distribution Owner | Imperial Irrigation District (9216) CA |
| Grid Voltage | 92.00 kV |
| Energy Storage | No |
Generator 2 Details Operating February 1941
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 9.6 MW |
| Nameplate Power Factor | 0.8 |
| Summer Capacity | 10 MW |
| Winter Capacity | 8 MW |
| Minimum Load | 1 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | February 1941 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 1H |
| Multiple Fuels | No |
Generator 1 Details Operating August 1950
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 10 MW |
| Nameplate Power Factor | 0.8 |
| Summer Capacity | 10 MW |
| Winter Capacity | 10 MW |
| Minimum Load | 0.6 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | August 1950 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 1H |
| Multiple Fuels | No |
Drop 4 Plant Owners
| Owner Name | Address | Generator | Ownership | We couldn't locate any owners for this plant |
|---|
Power Plants with Similar Net Generation
Power plants with a similar annual net generation from Water.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #381 | Grandfather Falls | Irma, WI | 79.1 GWh |
| #382 | Stark | Colton, NY | 78.8 GWh |
| #383 | Upper Mechanicville | Town of Stillwater, NY | 78.7 GWh |
| #384 | Loon Lake | Fresh Pond, CA | 78.0 GWh |
| #385 | Swan Lake | Ketchikan, AK | 77.6 GWh |
| #386 | River Mill | Estacada, OR | 77.3 GWh |
| #387 | Skelton | Dayton, ME | 77.2 GWh |
| #388 | Fishing Creek | Great Falls, SC | 76.8 GWh |
| #389 | Roosevelt | Roosevelt, AZ | 76.0 GWh |
| #390 | Madison Dam | Ennis, MT | 75.6 GWh |
| #392 | Worumbo Hydro Station | Lisbon Falls, ME | 74.3 GWh |
| #393 | Packwood | Packwood, WA | 73.8 GWh |
| #394 | Friant Hydro Facility | Friant, CA | 73.5 GWh |
| #395 | Narrows PH | Grass Valley, CA | 73.4 GWh |
| #396 | McNary Dam Fish Attraction Project | Plymouth, WA | 72.5 GWh |
| #397 | Glen Park Hydroelectric Project | Watertown, NY | 72.4 GWh |
| #398 | Cougar | Lowell, OR | 72.3 GWh |
| #399 | Blanchard | Royalton, MN | 72.0 GWh |
| #400 | Balch 1 | Balch Camp, CA | 71.2 GWh |
| #401 | Stevenson | Monroe, CT | 70.8 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Drop 4.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Drop 1 | Holtville, CA | 9.0 GWh | 16.1 mi |
| Drop 2 (CA) | Holtville, CA | 26.7 GWh | 10.9 mi |
| Drop 3 (CA) | Holtville, CA | 15.3 GWh | 5.4 mi |
| Drop 5 (CA) | Calexico, CA | 5.6 GWh | 10.3 mi |
| East Highline | Holtville, CA | 2.8 GWh | 3.7 mi |
| El Centro Hybrid | El Centro, CA | 927.3 GWh | 19.8 mi |
| Heber Geothermal | Heber, CA | 376.3 GWh | 17.4 mi |
| Heber Solar | Heber, CA | 24.1 GWh | 18.7 mi |
| Imperial Valley Solar, LLC | Calexico, CA | 441.7 GWh | 21.5 mi |
| IVC Solar | Imperial, CA | 4.2 GWh | 18.9 mi |
| Mount Signal Solar Farm II | Calexico, CA | 373.2 GWh | 24 mi |
| Mount Signal Solar Farm V | Calexico, CA | 638.8 GWh | 20.3 mi |
| Ormesa I | Holtville, CA | 70.2 GWh | 7.9 mi |
| Ormesa II | Holtville, CA | 131.7 GWh | 6 mi |
| Ormesa III | Holtville, CA | 44.4 GWh | 5.5 mi |
| Second Imperial Geothermal | Heber, CA | 275.2 GWh | 18.4 mi |
| Sol Orchard El Centro PV | El Centro, CA | 45.1 GWh | 20.2 mi |
| Valencia 3 | Imperial, CA | 4.2 GWh | 22.3 mi |
| Vikings Energy Farm | Holtville, CA | 295.0 GWh | 7.4 mi |
| Wistaria Ranch Solar | Calexico, CA | 271.3 GWh | 23.3 mi |