<p>Malaysia is encouraging the use of renewable energy such as solar energy to reduce dependency on fossil fuel-based energy resources such as natural gas and coal, which were previously used as the primary source of electricity. Parallel to the effort, UTHM have been operating a 6.9 MWp solar PV system since November 2021 on self-consumption (SELCO) mode. In comparison to NEM initiative, SELCO only allows the generated electricity from the solar PV system to be self-consumed and not permitted to be transmitted to the grid. The study aims to analyse and compare the technical and financial performance of UTHM’s solar PV system under SELCO and NEM initiative for the period of two years from December 2021 to November 2022 (Year 1) and from December 2022 to November 2023 (Year 2). The consumption and solar PV generation data used for the technical (kWh) and financial (RM) analysis are collected from TNB invoices (electricity bills). Solar PV generation data for the twenty-six (26) solar PV systems utilized Helioscope software data for year one while Fusion Solar monitoring data was used for year two. The analyses show that via NEM initiative, the solar PV system generated 1,991,592.90 kWh higher than the SELCO initiative equivalent to a reduction RM 200,101.35 of electricity cost for Year 1. For Year 2, NEM initiative generated 1,989,518.17 kWh higher than SELCO initiative and reduced RM 180,530.58 of electricity cost. Overall, the NEM initiative produced 9.21% higher electricity than SELCO at 3,981,110.17 kwh which is equivalent to electricity cost reduction of RM 380,631.93 (1.90%) over the period of two years.</p>

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Techno-economic comparison of solar pv system under self-consumption and net energy metering initiative

  • Ariff Ali,
  • Kamil Abdullah,
  • Mohamad Fani Sulaima

摘要

Malaysia is encouraging the use of renewable energy such as solar energy to reduce dependency on fossil fuel-based energy resources such as natural gas and coal, which were previously used as the primary source of electricity. Parallel to the effort, UTHM have been operating a 6.9 MWp solar PV system since November 2021 on self-consumption (SELCO) mode. In comparison to NEM initiative, SELCO only allows the generated electricity from the solar PV system to be self-consumed and not permitted to be transmitted to the grid. The study aims to analyse and compare the technical and financial performance of UTHM’s solar PV system under SELCO and NEM initiative for the period of two years from December 2021 to November 2022 (Year 1) and from December 2022 to November 2023 (Year 2). The consumption and solar PV generation data used for the technical (kWh) and financial (RM) analysis are collected from TNB invoices (electricity bills). Solar PV generation data for the twenty-six (26) solar PV systems utilized Helioscope software data for year one while Fusion Solar monitoring data was used for year two. The analyses show that via NEM initiative, the solar PV system generated 1,991,592.90 kWh higher than the SELCO initiative equivalent to a reduction RM 200,101.35 of electricity cost for Year 1. For Year 2, NEM initiative generated 1,989,518.17 kWh higher than SELCO initiative and reduced RM 180,530.58 of electricity cost. Overall, the NEM initiative produced 9.21% higher electricity than SELCO at 3,981,110.17 kwh which is equivalent to electricity cost reduction of RM 380,631.93 (1.90%) over the period of two years.