New batteries reaching commercial operation in SPP since Q4 2025
Name COD Power (MW) Duration (Hours) Owner County Region
Skeleton Creek II Dec-25
200
 4 NextEra Energy Garfield Southeast
Woodring Dec-25
52
 4 NextEra Energy Garfield Southeast
Source: SPP, EIA-860m, Modo Energy
Note: Skeleton Creek II and Woodring are part of the same Skeleton Creek Energy Center complex at Woodring 345kV substation. Combined capacity: 252 MW / 1,008 MWh. Duration for Woodring not available from public sources.
MODOENERGY