Solar PV and BESS Become More Economically Competitive, Driving Cost Efficiency and Industrial Energy Transition
The integration of solar photovoltaic (PV) systems with Battery Energy Storage Systems (BESS) is becoming increasingly economically competitive and is emerging as an alternative for reducing industrial operating costs in Indonesia. SUN Energy stated that the combination of solar PV and battery storage as a base-load power source in the mining sector has demonstrated lower costs compared with diesel generators, particularly amid rising diesel prices and supply constraints. Technological advancements have also made solar power generation increasingly competitive with PLN electricity tariffs in sectors such as fast-moving consumer goods (FMCG), manufacturing, and automotive industries. These developments indicate that solar energy adoption is no longer driven solely by environmental and environmental, social, and governance (ESG) targets, but is increasingly being considered as a strategy to improve cost efficiency, strengthen energy security, and enhance the sustainability of industrial operations.
Despite growing demand for solar PV from the industrial sector, accelerated investment continues to face challenges related to regulation, incentives, and financing. Industry stakeholders are calling on the government to strengthen incentives for companies transitioning from fossil fuel-based technologies toward electrification and renewable energy, while adopting regulations that are more responsive to the growing demand for solar PV. From a financing perspective, strong interest from global investors has not yet been fully matched by a sufficient pipeline of bankable projects offering attractive returns. The depreciation of the Indonesian rupiah has reportedly increased project investment costs (capital expenditure/capex) by up to approximately 30% compared with the previous year, while rising interest rates have further affected project financial viability. Therefore, a combination of supportive policies, stronger incentives, and innovative financing mechanisms will be essential to accelerate investment in solar PV-BESS systems and support the transformation of Indonesia’s industrial sector toward a lower-carbon energy system.
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