Heris power station is a 990 MW gas power station in East Azerbaijan, Iran. It is operated by Heris Power Plant Co [100%]. Based on its capacity (estimated), it can supply roughly 1.1 million homes (estimated). It ranks #40 of 177 Iran power plants by installed capacity. Commissioned in 2019, it is around 7 years old — recently built. In context, gas supplies about 89.5% of Iran's electricity; the national grid averages 660 gCO₂/kWh (5.7% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id GOGPT_heris_iran.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Capacity provenance
The public capacity above is the current source-record value. A 2026 tracker candidate lists 490 MW for Heris power station, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: GEM GOGPT; fuel: GEM GOGPT
In context: how this plant compares
At 990 MW, Heris power station is well above the median gas plant in Iran (546 MW). Technically it is described as CCGT; combined-cycle with a heat-recovery steam generator (HRSG); Ansaldo Energia: 3A-F, Ansaldo Energia: MT15 (steam turbine). Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of Iran gas capacity
- 1.2% of 83,060 MW across 121 plants in this dataset
- Age among peers
- 71 of 95 dated gas plants in Iran are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest gas plants in Iran
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Heris Power Plant Co [100%].
Climate zone & how it works
This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a hot-summer Mediterranean continental climate (Köppen Dsa) — Northern Hemisphere, latitude 38.2°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 mild atmospheric environment (estimated ISO 9223 class C2 — Low), with thermal cycling 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 #26 largest gas power plant of 121 in Iran by capacity.
Iran has 121 gas power plants in this dataset, together about 83,060 MW of capacity.
Nearby power plants
- Sufian · Gas · 150 MW · East Azerbaijan
- Tabriz · Oil · 800 MW · East Azerbaijan
- Tabriz Petroshimi · Gas · 70 MW · East Azerbaijan
- Tabriz · Gas · 987 MW · East Azerbaijan
- Gara Chilar · Hydro · 130 MW · Zangilan Rayon
- Ardebil Sabalan · Gas · 1,435 MW · Ardabil
Location
Coordinates 38.225228, 46.96294 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Heris power station?
Heris power station is a 990 MW gas power plant in East Azerbaijan, Iran, commissioned in 2019.
Who operates Heris power station?
Heris power station is operated by Heris Power Plant Co [100%].