Storage power plant in Ohio, United States of America. Approximate location 40.3988, -84.3873.
StorageOhioUnited States of America
HMV Minster Energy Storage System is a 7 MW storage power plant in Ohio, United States of America. It is operated by Half Moon Ventures LLC. Based on its capacity (estimated), it can supply roughly 1.8k homes (estimated). It ranks #6242 of 10,938 United States of America power plants by installed capacity. Commissioned in 2016, it is around 10 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0060299.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
The capacity and/or fuel fields on this page include a source-backed provenance label from GEM, an official registry, Wikidata, OSM, or a cross-source match.
capacity: Wikidata P2109 nameplate capacity; fuel: WRI source-record fuel
At 7 MW, HMV Minster Energy Storage System is well above the median storage plant in United States of America (4 MW). This facility converts its energy source into electricity for the grid; its capacity, fuel type and location determine its role in the national power mix.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Operated by Half Moon Ventures LLC.
This storage plant stores and releases electricity (pumped-hydro or batteries) to balance the grid. It sits in a hot-summer humid continental climate (Köppen Dfa) — Northern Hemisphere, latitude 40.4°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 29% above the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.
Climate heat-demand index: 67/100 — this site sits in the top third of the power plants we cover by heating degree-days.
Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.
For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a mild atmospheric environment (estimated ISO 9223 class C2 — Low), with thermal cycling the leading environmental stress.
Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
The #34 largest storage power plant of 104 in United States of America by capacity.
United States of America has 104 storage power plants in this dataset, together about 815 MW of capacity.
Coordinates 40.3988, -84.3873 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
HMV Minster Energy Storage System is a 7 MW source-record storage power plant in Ohio, United States of America, commissioned in 2016.
Its output is enough to supply roughly 1,752 homes (estimated).
HMV Minster Energy Storage System is operated by Half Moon Ventures LLC.
