Doosan Skoda Installs Combined-Cycle Equipment at Rayong Project

Doosan Škoda Power successfully delivered and installed a 20-MW steam turbine, generator, condenser, and additional equipment for a new combined-cycle power plant in Rayong Province, Thailand. The Rayong project replaces an older facility and will reduce natural gas consumption by 15% compared to this outdated installation.

“We are excited to have been part of this project and to collaborate with the Thai company TTCL, the EPC contractor for the project,” said Jindřich Závodný, Project Manager at Doosan Škoda Power. “After all deliveries to the site were made, we subsequently provided technical assistance with installation and successful commissioning. Thanks to our work, we were able to meet all contractual milestones. Our technology will contribute to efficient and sustainable energy use in the region. We thank the entire team and suppliers for their hard work and dedication.”

The turbine system generates a total output of 74 MW, delivering steam and electricity for the surrounding industrial region. The transmission system, operated by the Electricity Generating Authority of Thailand (EGAT), will utilize surplus electricity from the Rayong project. This project represents the first delivery of a Doosan Škoda Power turbine to the Thai market.

Steam turbine at Rayong plant; image credit: Doosan Skoda Power

Rayong Project

In October 2024, Mitsubishi Power completed construction on the eighth and final M701 JAC unit for a 5,300 MW natural gas-fired power plant project in Thailand. The project is a joint venture between Gulf Energy Development Public Co. and Mitsui & Co., and successfully began full commercial operations on October 1, 2024. This milestone marks the on-time completion of a multi-phase project awarded in 2018, featuring two GTCC plants in the Chonburi and Rayong provinces.

Each plant is equipped with four M701 JAC gas turbines, steam turbines, and heat recovery steam generators, supporting a reliable and sustainable energy supply for Thailand’s energy security and economic growth. On October 1, the first seven units installed across Chonburi and Rayong collectively logged 100,000 actual operating hours. The M701 JAC turbine delivers 64% power generation efficiency, reducing fuel costs and carbon emissions.

EGAT News

In June, EGAT and Mitsubishi Heavy Industries (MHI) agreed to research the integration of hydrogen co-firing technologies in gas turbine-driven power generation facilities in Thailand. Backing the country’s goal of reaching carbon neutrality by 2050 and net-zero emissions by 2065, the partners’ research will facilitate the conversion of thermal power plants to clean-fuel operation. The agreement will begin with a hydrogen co-firing pilot project at an EGAT power plant in Thailand, with an initial feasibility study to be performed by March 2025. For this pilot project and at EGAT’s request, the companies plan to achieve a hydrogen co-firing ratio of 20% with assistance from Mitsubishi Power.

This research is an extension of an ongoing collaboration between MHI and EGAT to introduce hydrogen co-firing, adding to an agreement from 2022 to obtain and exchange information on clean fuel power generation, clean hydrogen, and carbon capture, utilization, and storage technologies. During the early partnership phase, the duo conducted preliminary investigations of MHI’s hydrogen co-firing technology with gas turbines at existing EGAT plants.