Conventional Power Plants
Aside from focusing on enterprise value creation,
RATCH also fully participates in securing
the national power grid stability
by concerning that it is a crucial infrastructure for economic and social development of the country. Therefore, the Company mostly interests in fossil fuel power projects due to its reliability and availability enabling to timely and consistently serve power demand at all circumstances.
To minimize fuel risk, RATCH also considers diversification of power plants fired with different fuel such as natural gas, coal and fuel oil. This helps strengthen our business growth and stabilize the national electricity system in Thailand and invested countries.
(51.83% of total generation capacity)
(17.00% of total generation capacity)
(0.08% of total generation capacity)
In its portfolio of IPPs and SPPs in Thailand
as of November 2025, RATCH has
4,115.64 MW
capacity generated commercially
12 MW
under development and construction
and international projects have
2,477.78 MW
capacity generated commercially
Type: IPP
Turbine Type: Combined Cycle
Equity holding: 100%
Equity installed capacity: 2,175 MW
PPA (Years): 25
Total Installed Capacity:
2,175 MW
EIA Website:
- In 1996, Ratchaburi Power Plant Project (4,600 MW)
- In 2003, Fuel oil transmission system project for the Ratchaburi Thermal Power Plant (Unit 1 and 2)
- In 2019, EIA report on Ratchaburi Power Plant Project (1st revised edition)
- In 2021-2024 and Jan-Jun 2025, EIA monitoring report and the environmental monitoring measure, Ratchaburi Power Plant Project (In operation)
Type: SPP
Turbine Type: Combined Cycle
Equity holding: 40%
Equity installed capacity: 80.63 MW / Expansion phase 12 MW
PPA (Years): 25
Total Installed Capacity:
201.57 MW
40 tons per hour of process steam
Expansion phase (Under construction):
30 MW
5 tons per hour of process steam
EIA Website:
- In 2017, Nava Nakhon Electricity Generating project (1st Expansion Phase)
- In 2022, Nava Nakhon Electricity Generating project (2nd Expansion Phase)
- In 2020-2024, EIA monitoring report and the environmental monitoring measure, Nava Nakhon Electricity Generating project (1st Expansion Phase)
- In 2023-2024 and Jan-Jun 2025, EIA monitoring report and the environmental monitoring measure, Nava Nakhon Electricity Generating project (2nd Expansion Phase)
Type:
Turbine Type: Gas Turbine
Equity holding: 100%
Equity installed capacity: 154 MW
PPA (Years):
- Cap Contract with several offtakers
- Cap Contract and Priority Operation Contract with Lincoln Gap 1&2
Total Installed Capacity:
154 MW
Website:
Type: IPP
Turbine Type: Thermal
Equity holding: 36.26%
Equity installed capacity: 741.52 MW
PPA (Years): Expire in 2042
Total Installed Capacity:
2,045 MW
Type: SPP
Turbine Type: Combined Cycle
Equity holding: 51.67%
Equity installed capacity: 79.06 MW
Fuel Type: Natural Gas
PPA (Years): 25 Years
Total Installed Capacity:
153 MW
110 tons per hour of process steam
EIA Website:
- In 2014, Sahacogen Combined Cycle Power Plant Project (Expansion Phase 3)
- In 2015, Revised EIA report, Sahacogen Combined Cycle Power Plant (Expansion Phase 3)
- In 2021-2024, EIA monitoring report and the environmental monitoring measure, Sahacogen Combined Cycle Power Plant Project (Expansion Phase 3)
- In 2023-2024 and Jan-Jun 2025, EIA monitoring report and the environmental monitoring measure, Sahacogen Combined Cycle Power Plant Project (Expansion Phase 4)
Type: IPP
Turbine Type: Combined Cycle
Equity holding: 40.625%
Equity installed capacity: 605.31 MW
PPA (Years): 25
Total Installed Capacity:
1,490 MW