Combined cycle project updates | Mitsubishi Power reports success in Asia


Among recent combined cycle project developments reported by Mitsubishi Power is completion and start of operation at the third of four M701JAC (J-series Air-Cooled) natural gas fired gas turbines being constructed in Rayong Province, Thailand, about 130 km south east of Bangkok. The four gas turbines will power two combined cycle units at the site, total installed capacity 2650 MW. The project is a joint venture between Gulf Energy Development PCL, Thailand’s largest independent power producer (IPP), and Mitsui. The power plant operator is Gulf PD Co Ltd.


Mitsubishi Power says this latest Rayong milestone marks the timely delivery of seven out of eight M701JAC units across two 2650 MW combined cycle power plants, in Rayong and Chonburi (Gulf Sriracha facility, operated by Gulf SRC Company Limited), with a total installed capacity of 5300 MW. Anticipated to be fully operational by autumn 2024, all eight units of the completed power plants will support the electricity needs of key industrial and economic hubs in the eastern region of Thailand. Mitsubishi Power says it has also successfully begun operation of one of two M701JAC gas turbines in a 1400 MW natural gas fired combined cycle power plant being developed in Thailand by Hin Kong Power Co Ltd, a special purpose company jointly established by RATCH Group Public Company Limited and Gulf Energy


Development Public Company Limited. The completion and full operation of the second unit here is scheduled for January 2025. In Hong Kong, Mitsubishi Power is to supply combined cycle power plant equipment for Lamma unit 13, a natural gas fuelled power plant to be built by Hongkong Electric Co, Ltd (HK Electric) on Lamma Island, south west of Hong Kong Island. HK Electric is the sole electricity provider to Hong Kong Island and Lamma Island. The new unit, employing an M701F gas turbine, will have an installed capacity of 380 MW and is scheduled to enter operation in early 2029. The new plant will be located adjacent to the existing Lamma units 9, 10, 11 and 12, and the power generation equipment order follows on from previous similar orders for units 10, 11 and 12 in July 2015.


As well as the gas turbine for the new Lamma unit, Mitsubishi Power’s scope will include a steam turbine, a heat recovery steam generator, and a selective catalytic reduction system. The generator will be manufactured by Mitsubishi Generator Co Ltd, a new company headquartered in Hyogo Ward, Kobe City formed on 1 April by integrating the power generator businesses of MHI and Mitsubishi Electric Corporation.


Meanwhile, in Uzbekistan, Mitsubishi Power, is providing combined cycle equipment, including an M701JAC gas turbine, for the 600 MW/200 Gcal/h Navoi 3 CCGT cogeneration plant to be


built by JSC Thermal Power Plants, the state electric power corporation of the Republic of Uzbekistan. It is expected to start commercial operation in 2026.


This is the third combined cycle equipment order received by Mitsubishi Power for the Navoi site, located about 360 km south west of Tashkent. Mitsubishi Power previously supplied GTCC power generation equipment for Navoi 1 and Navoi 2, which started operation in 2013 and 2019, respectively. As well as generating electricity, Navoi 3 will supply industrial steam and district heating to the Navoi Free Economic Zone. In addition to supplying the gas and steam turbines for Navoi 3, Mitsubishi Power will handle the design, procurement, manufacture, and commissioning of the power plant’s other core components and major auxiliary equipment, such as air-cooled condensers and gas compressors, while the generator will be manufactured by Mitsubishi Generator.


Mitsubishi Power says it has received many orders for large-scale gas turbines in Uzbekistan, including JAC and F series machines. Navoi 3 is the 13th such order and the fifth for a JAC series gas turbine, “giving Mitsubishi Power a market share of about 90% for large-scale gas turbines in the country.” The company has also supplied smaller, H-25, gas turbines for a city-based distributed natural gas fired cogeneration facility being constructed in Tashkent.


Rayong site (photo Mitsubishi Power)


Navoi 2 (photo Mitsubishi Power) CCS for Connah’s Quay?


Plans are being developed by Uniper for a combined cycle power plant with carbon capture at its Connah’s Quay site, UK. The new power station, Connah’s Quay Low Carbon Power, would connect into nearby CO2


transport and


storage infrastructure as part of the HyNet industrial cluster, enabling the captured CO2


to


be transported to permanent offshore storage facilities in repurposed depleted offshore gas fields. Uniper has been inviting local residents, councils and other organisations to attend public information events about the project, with a view to submitting a detailed planning application later this year.


It is envisaged that the new plant will have an installed capacity of up to 1.1 GW of low-carbon power, developed in two phases each of 550 MW,


with phase 1 potentially operational by 2030. Two CCGT+CCS projects in the UK are currently in possession of planning permission, Net Zero Teesside Power (Development Consent Order awarded February 2024) – see p12 – and SSE Thermal’s Keadby 3 Carbon Capture Power Station (DCO awarded December 2022) (not to be confused with the proposed SSE Thermal/ Equinor Keadby Hydrogen Power Station, a longer term prospect).


Not to be outdone, RWE is also proposing a CCGT+CCS power plant in the UK, a 900 MW facility to be located at Stallingborough, near Immingham. In terms of planning permission, this project is at the pre-application stage, with the application itself expected to be submitted between October and December 2025.


18 | May 2024| www.modernpowersystems.com


Connah’s Quay (photo Uniper)


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