PLN Industrial Electricity Rates Remain Stable Until 2026 & Cost-Saving Strategy Through Rooftop Solar PV

Based on a decision by the Ministry of Energy and Mineral Resources, PLN electricity rates for industrial categories I-3 and I-4 will remain stable until June 2026. However, electricity costs remain a major operational component affecting manufacturing companies' margins, especially with the Peak Load Time (WBP) component, which is 1.4 times the base rate applicable from 6:00 PM to 10:00 PM. In addition to the per-kWh rate, bills are also affected by subscription fees and power factor penalties, which often make the actual cost higher than the nominal rate. The use of rooftop Solar Power Plants (PLTS) offers a structural cost-saving solution. For example, a factory with a consumption of 500 kW can install a solar PV system with a capacity of 400–450 kWp, generating savings of around IDR 714 million to IDR 803 million per year for the I-3 rate. These savings are even more significant if operations take place during WBP hours, because each kWh from solar PV replaces PLN electricity at a higher rate. The payback period for a rooftop solar PV investment is generally 5–8 years, with the panel lifespan reaching 25 years. Several financing schemes are available, such as SUN Rental with 0% down payment and performance-based monthly payments, and SUN Purchase for full ownership from the start. This strategy allows companies to permanently reduce energy costs without reducing production capacity. https://www.urbanjabar.com/news/9217060954/tarif-listrik-pln-industri-bagaimana-cara-menghematnya