Lockport Powerhouse
Hydro power plant · Will County, Illinois
Nameplate capacity
16 MW
Rank in Illinois
#156
of 580 plants
In service since
1999
February 1999
Details
- Primary fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Operator
- Metro Wtr Recl Dist Grtr Chi
- County
- Will County
- Generating units
- 2
- Share of state capacity
- 0.03%
- Rank among hydro plants in Illinois
- #1 of 7
- EIA plant code
- 10903
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1GEN | Conventional Hydroelectric | 8.0 MW | 6.0 MW | 1999 | Out of service but expected to return to service in next calendar year |
| 2GEN | Conventional Hydroelectric | 8.0 MW | 6.0 MW | 2001 | Out of service but expected to return to service in next calendar year |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Illinois
| Marshall (IL) | Other | 17 MW |
| City of Peru Water Street Generating Sta | Other | 16 MW |
| Freeburg | Other | 16 MW |
| South Main Street | Natural gas | 16 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 16 MW solar plant and a 16 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Illinois power plants · What Illinois actually generates