ENVIRONMENTAL AWARENESS & PRESERVAT ION Sect ion 06 47 SUSTAINAB I L I TY Report 2022 SOLAR ENERGY GENERATION (kWh) The recent installation of solar panels at the Sultan Iskandar WTP and mini hydro power generation at the Gunung Ledang WTP has enabled Ranhill SAJ to generate 25,605 kWh and 109,026 kWh of solar and hydro derived electricity for FY2022. Though small, the numbers are expected to grow with increased adoption of RE across business operations going forward. 2021 2022 Solar at Sultan Iskandar WTP (kWh) 48,397 25,605 Hydro at Gunung Ledang WTP (kWh) 64,822 109,026 Carbon avoided (kgCO2eq) 66,233.1 78,759.2 HEAT RATE GENERATED Heat rate data is derived from the heat generated from Ranhill’s two power plants. Heat generated is a contributory factor to global warming and hence is material to the Group’s ESG performance. However, the use of a Combined Cycle system at both power plants enables heat released into the atmosphere during operations to be reduced significantly. The Combined Cycle system reduces atmospheric heat emissions by an average of 110 Celsius to 500 Celsius. In a Combined Cycle System, waste heat produced by the gas turbines are used to produce steam to drive the steam turbine to generate additional electricity. This prevents waste heat and emissions from being released into the atmosphere. Hence the preference is to operate using the Combined Cycle, though this decision is also dependent on the preferences of the offtaker, Sabah Electricity Sdn Bhd (“SESB”). Heat emitted can also be reduced by ensuring high operational efficiency and optimum performance of the gas and steam turbines. This can be achieved through effective maintenance programmes. In addition, both plants use natural gas as its fuel source (which is regarded as the lowest carbon emitting fossil fuel source). Presently, heat generated from operations are within thresholds set by the regulator, DOE. HEAT RATE FROM POWER PLANT OPERATIONS kJ/kWh FY2020 FY2021 FY2022 RPI 9,833.12 9,745.61 9,703.5 RPII 8,657.36 8,565.95 8,930.7 GAS CONSUMPTION Liquefied Natural Gas (“LNG”) is consumed as the primary fuel source for the Teluk Salut and Rugading power stations. LNG is a cleaner fossil fuel compared to diesel and other hydrocarbon fuels typically used for combustion at power plants. The LNG consumed by the RPI Power Plant is higher due to the older gas turbines installed. This is an early model of a Frame 6B Gas Turbine. At RPII, the Frame 6FA is used, which is one of the world’s most fuel-efficient gas turbines in the market today. GAS CONSUMPTION AT POWER PLANTS FY2020 FY2021 FY2022 RPI (MMbtu) 10,747,173.07 10,841,916.99 11,292,695.8 RPII (MMbtu) 9,152,081.48 9,512,059.43 9,733,094.3 ENV I RONMENTAL Awareness & PRESERVAT ION
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