Power plant · EIA plant code 6166
Rockport
- Operator
- Indiana Michigan Power Co
- Location
- Spencer, IN (county level only)
- Balancing authority
- PJM Interconnection, LLC (PJM)
- Nameplate capacity
- 2,600 MW
- Summer capacity
- 2,600 MW
Planned changes reported to EIA: 2 planned retirements.
U.S. Energy Information Administration · Annual Electric Generator Report (Form EIA-860) · data for 2025 · as of Sep 10, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Sep 10, 2027. Last checked for an update: Oct 31, 2026.
Generation in 2025
- Net generation
- 9,635,223 MWh
- Capacity factor
- 42.3%
Capacity factor is net generation divided by nameplate capacity times the hours each generator was in service that year, counted by month.
U.S. Energy Information Administration · Power Plant Operations Report (Form EIA-923) · data for 2025 · as of Sep 11, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Sep 11, 2027. Last checked for an update: Oct 31, 2026.
Emissions
- Carbon dioxide in 2023
- 3,074,055 metric tons
- Carbon dioxide per MWh
- 2,718 lb/MWh
eGRID reports 3,388,566 short tons. One short ton is 0.90718474 metric tons.
Emissions are for 2023, the newest eGRID year. Generation is for 2025, the newest EIA-923 year.
U.S. Environmental Protection Agency · Emissions & Generation Resource Integrated Database (eGRID) · data for 2023 · as of Jun 16, 2025 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Jan 31, 2026. Last checked for an update: Oct 31, 2026.
Generators
| Generator | Technology | Energy source | Nameplate | Operating since | Status |
|---|---|---|---|---|---|
| 1 | Conventional Steam Coal | SUB | 1,300 MW | 1984 | Operable · Planned retirement: 2028 (reported to EIA) · As of September 2026 (EIA-860M): (OP) Operating |
| 2 | Conventional Steam Coal | SUB | 1,300 MW | 1989 | Operable · Planned retirement: 2028 (reported to EIA) · As of September 2026 (EIA-860M): (OP) Operating |
U.S. Energy Information Administration · Monthly Update to the Annual Electric Generator Report (Form EIA-860M) · data for 2026-09 · as of Oct 23, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Nov 23, 2026. Last checked for an update: Oct 31, 2026.