Ishinomaki Mill power station is a 98 MW coal power plant in Miyagi Prefecture, Japan. It is operated by Nippon Paper Industries Co Ltd [100%]. Based on its capacity (estimated), it can supply roughly 123k homes (estimated). It ranks #259 of 692 Japan power plants by installed capacity. Commissioned in 1987, it is around 39 years old — long-established. In context, coal supplies about 32.1% of Japan's electricity; the national grid averages 477 gCO₂/kWh (32.7% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id GEM_coa_ishinomakimill_japan.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Source of the capacity and fuel values:
capacity: GEM · 2026 · L100000102948; fuel: GEM GCPT
In context: how this plant compares
At 98 MW, Ishinomaki Mill power station is below the median coal plant in Japan (250 MW). Technically it is described as subcritical. Coal plants burn pulverised coal to raise high-pressure steam for a turbine; they run as baseload but are the most carbon-intensive mainstream source and the first targeted for retirement or efficiency retrofits.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of Japan coal capacity
- 0.2% of 53,431 MW across 94 plants in this dataset
- Age among peers
- 20 of 83 dated coal plants in Japan are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest coal plants in Japan
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Nippon Paper Industries Co Ltd [100%].
Climate zone & how it works
This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 38.4°N — which shapes how much energy it can produce and how its output varies through the year.
Climate zone & typical temperatures: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).
Site climate & environmental severity
This site sits in a corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness the leading environmental stress.
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.
How it compares & nearby plants
The #77 largest coal power plant of 94 in Japan by capacity.
Japan has 94 coal power plants in this dataset, together about 53,431 MW of capacity.
Nearby power plants
- Ishinomaki · Solar · 14 MW · Miyagi
- Kizuna Solar Power Plant · Solar · 3.6 MW · Miyagi
- Onagawa · Nuclear · 2,174 MW · Miyagi
- Sendai Solar Power Plant · Solar · 2 MW · Miyagi
- Sendai Tohoku power station · Gas · 468 MW · Miyagi
- SENDAI REFINERY · Other · 119 MW · Miyagi
Location
Coordinates 38.41883, 141.291733 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Ishinomaki Mill power station?
Ishinomaki Mill power station is a 98 MW coal power plant in Miyagi Prefecture, Japan, commissioned in 1987.
Who operates Ishinomaki Mill power station?
Ishinomaki Mill power station is operated by Nippon Paper Industries Co Ltd [100%].