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RATCH Group installed 2-MW solar floating on Ratchaburi Power Plant’s reservoir to serve the thermal power stations during reserved shutdown, the project’s GHG emission reduction at 1,774 tCO2e/year

Nowadays countries around the world are now addressing and promoting the policy on renewable energy for power generation in order to reduce the dependency on fossil fuel with an aim to reduce greenhouse gas emissions, the cause of global warming and climate change consequent upon higher temperature and extreme weather leading to various natural disasters i.e. floods, drought etc. which effected the planet and all mankind in aspects of economic, social and environment.         

Solar power, a high potential renewable source for generate electricity tends to increase constantly because it is known as clean energy that creates no pollution and environment-friendly, as well as replenishes itself naturally and eternally.  Thailand has a great potential for solar energy development as its location situated in the equatorial zone which absorbs relatively steady sunlight through the year with the record of the annual average daily solar radiation intensity over all areas of the country by 18.0 MJ/m2-day, or 5 kMh/m2-day. Compared to other countries, Thailand has literally high level of solar energy reception areas which is sufficient for generating electric power.  According to technology advancement accommodates solar panel installations easier operated in all kinds of area, including on water surface, so called floating solar. It consequently relaxes limitation of solar power development about land use.     

RATCH Group Public Company Limited and Ratchaburi Electricity Generating Company Limited, a wholly-owned subsidiary had jointly developed the Solar Floating Project at the Ratchaburi Power Plant addressing the greenhouse gas management initiatives under environment aspect of RATCH’s Sustainability Development Policy besides economic growth.

Mr. Kijja Sripatthangkura, Chief Executive Officer of RATCH Group, stated rationale of the project that Ratchaburi Thermal Power Plant Unit 1-2 with combined capacity of 1,470 megawatts has been ordered reserved shutdown so that the power plant’s operation was temporary closure until the demand resumes.  During the time, the power plant had to procure electricity from Electricity Generating Authority of Thailand (EGAT) to secure function of machines, equipment, operation offices and buildings. Consequently, cost and indirect greenhouse gas emission (Scope2) of Ratchaburi power plants inevitably increased.  Accordingly, the solar floating project has been initiated and developed to serve electricity need of the thermal power plants in its reserved shutdown period. The 200-rai raw water reservoir in Ratchaburi Power Plant complex was selected as the project’s location and the study of potential annual average daily solar radiation intensity started in 2018 and the result was at 1,793 kW/square meter. The project’s construction, solar panel installation, system testing, and relevant license permission were completely succeeded in March 2021. 

The Bt78-million solar floating project with 2.138 megawatts capacity installed Photovotaic Solar Module, consisting of 6,480 of 330-Watt Polycrystalline solar panels on water surface of the reservoir, covering 14-rai area, equivalent to 7% of total areas of the reservoir. It expected to generate 3,121,500 kilowatt-hour of electricity annually. Currently, the electricity is transmitted to the water quality treatment building, warehouse, office building, simulation training building, operation buildings and public lighting.  

“The solar floating project has obviously brought economic, social and environmental benefits. Ratchaburi Power Plant’s electricity expenses annually decreased 9.96 million baht, representing 3-baht per kilowatt-hour. At the same time, volume of emitted greenhouse gas reduced by 1,774 tCO2e per year that causes positive impacts on community and relevant stakeholders. Besides, the company has registered the solar floating project under Thailand Greenhouse Gas Management Organization (Public Organization)’s Voluntary Emission Reduction Program (TVER) in Renewable Energy Category and it was certified on November 13, 2018. The certified greenhouse gas reduction of the project was 1,774 tCO2e per year and throughout 7 year-period (2020-2027), greenhouse gas reduction in total will be 12,418 tCO2e. Additionally, Thailand Greenhouse Gas Management Organization (Public Organization) was granted the honorable certificate to the Company in the event of “Unifying our hearts to address global warming together 2019” to praise our commitment on climate action by managing greenhouse gas reduction. That award regarded as our pride, reflection of our determination and motivation to further initiatives supporting our sustainable growth together with society, environment and the nation,” Mr. Kijja concluded. Back to all news