Mae Moh power station is a 3,880 MW coal power station in Lampang, Thailand. It is operated by Electricity Generating Authority of Thailand [100%]. Based on its capacity (estimated), it can supply roughly 4.9 million homes (estimated). It ranks #2 of 238 Thailand power plants by installed capacity. Commissioned in 1978, it is around 48 years old — long-established. In context, coal supplies about 17.8% of Thailand's electricity; the national grid averages 546 gCO₂/kWh (16.6% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id GEM_coa_maemoh_thail.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
The public capacity above is the current source-record value. A 2026 tracker candidate lists 2,455 MW for Mae Moh power station, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).
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: GEM · 2026 · L100000103576; fuel: GEM GCPT
At 3,880 MW, Mae Moh power station is well above the median coal plant in Thailand (660 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.
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Operated by Electricity Generating Authority of Thailand [100%].
This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a tropical savanna climate (Köppen Aw) — Northern Hemisphere, latitude 18.3°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).
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 moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness 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 #1 largest coal power plant of 18 in Thailand by capacity.
Thailand has 18 coal power plants in this dataset, together about 17,394 MW of capacity.
Coordinates 18.296, 99.752 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Mae Moh power station is a 3,880 MW coal power plant in Lampang, Thailand, commissioned in 1978.
Its output is enough to supply roughly 4,855,542 homes (estimated).
Mae Moh power station is operated by Electricity Generating Authority of Thailand [100%].
