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Power Plants in Thailand

Thailand has 111 power plants mapped on the OverWatts open energy atlas — the 38th-largest fleet of the 155 countries that hold any, and 0.4% of the world's mapped total. Of these, 86 operating and 16 under construction or proposed. Operating generation capacity totals 46.1 GW across 86 utility-scale plants of 100 MW and above. The largest is Ratchaburi (RATCHGEN) power station (3.6 GW).

The largest owner-operators are Electricity Generating Authority of Thailand (21), Electricity Generating Authority of Thailand (EGAT) (9) and B.Grimm Power PCL (8) — Electricity Generating Authority of Thailand alone is named on 19% of them. Half of Thailand's power plants in service predate 2013 (median commissioning year of the 85 with a known date), 29 came online in the past decade and the oldest still listed is Bhumibol hydroelectric plant, dating from 1964. 16 are in the pipeline, led by South Bangkok power station (2.1 GW), proposed. They account for 44% of every energy asset OverWatts maps in Thailand.

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111
Power Plant in Thailand
#38
of 155 countries
46.1 GW
Operating capacity
16
In construction / proposed

Operating generation capacity by fuel

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Largest power plants in Thailand

Who owns Thailand's power plants

Counts an asset once per company named as its owner or operator; a joint venture counts for each partner.

When they were built

Median commissioning year 2013 · oldest Bhumibol hydroelectric plant (1964) · newest Solar Development solar farm (2024) · 85 of 111 carry a start date

Under construction & proposed

How Thailand compares · power plants by country

Frequently asked

How many power plants are there in Thailand?
OverWatts maps 111 power plants in Thailand — 0.4% of the world's mapped total, the 38th-largest national fleet of the 155 countries with any.
What is the largest power plant in Thailand?
Ratchaburi (RATCHGEN) power station, at 3.6 GW.
How much power-generation capacity do Thailand's power plants have?
About 46.1 GW operating across 86 plants, with a further 19.2 GW under construction or proposed. That covers utility-scale sites of 100 MW and above, so it sits below national installed capacity wherever distributed generation is large.
Who owns the power plants in Thailand?
Electricity Generating Authority of Thailand is named as owner or operator on the most — 21 of 111 (19%). Next are Electricity Generating Authority of Thailand (EGAT) (9), B.Grimm Power PCL (8) and Gulf MP Company Ltd (8).
How old are Thailand's power plants?
The median commissioning year is 2013, across the 85 in service with a known start date. The oldest still listed is Bhumibol hydroelectric plant (1964); 29 came online in the past ten years.
What new power plants are being built in Thailand?
16 projects are under construction or proposed. The largest are South Bangkok power station (2.1 GW), Surat Thani power station (1.4 GW) and Vajiralongkorn Pumped Storage hydroelectric plant (900 MW).

Other asset classes in Thailand

Oil & Gas Field 42Pipeline 36Cement Plant 17Iron & Steel Plant 12LNG Terminal 10Grid Storage 6Chemical Plant 6Refinery 3Export Terminal 3Coal / Uranium Mine 2Iron Ore Mine 2Data Centre 1

Power Plants in other countries

China 11,537United States 3,831India 1,675Brazil 879Spain 653Australia 615Philippines 489Russia 461Canada 452Vietnam 392Japan 387Germany 335