Taum Sauk is a 408 MW Hydroelectric Pumped Storage asset in MISO (Midcontinent), currently Operating.
Taum Sauk is reported in Missouri since 1963 under Ameren. Available operating and financial measures include -4.5% capacity factor and -160 GWh annual generation; $386/kW reported CapEx.
- Location
- Reynolds, Missouri
- Technology
- Hydroelectric Pumped Storage
- Owner / parent
- Ameren
- Operator
- Union Electric Co - (MO)
- Grid
- MISO (Midcontinent)
- Plant ID
- 2108
What stands out
Taum Sauk is a 408 MW Hydroelectric Pumped Storage asset in Missouri with status Operating.
Latest annual operating measures report -4.5% capacity factor and -160 GWh annual generation.
Available financial measures include $12.6/MWh OpEx, $386/kW CapEx.
Latest linked story: “An award-winning power plant turned into a catastrophe after a silent overflow caused the dam to collapse and spill approximately 6 billion liters of water down a mountainside into a state park; the investigation exposed faulty sensors, a lack of spillway, and re” (CPG Click Petróleo e Gás, 2026-01-07).
Market and operating context
- ISO / market
- MISO (Midcontinent)
- Balancing authority
- Midcontinent Independent Transmission System Operator, Inc..
- NERC region
- SERC
- State rank
- #1 of 8
- National rank
- #60 of 1,462
Why it matters
For this asset in MISO (Midcontinent), operating status, generation, ownership, and linked events are the primary facts for performance and asset-level diligence. The exact chart and source-linked records below let the reader test those facts before moving to a deeper report.
