September 16, 2026

PLN solar expansion to increase capacity by 5.2 GWp in Indonesia

PLN Solar Expansion Goals

PT PLN (Persero) plans to expand its solar capacity by approximately 5.2 gigawatt-peak (GWp) and introduce 8.2 gigawatt-hours (GWh) of battery energy storage as part of President Prabowo Subianto’s 100-gigawatt solar power program. This initiative aims to enhance the electricity supply in South Sulawesi, providing additional generation sources that do not rely on hydropower.

Addressing Hydropower Shortfalls in PLN Solar Expansion

The expansion is a response to recent reductions in hydropower generation due to the El Niño weather phenomenon, which has cut hydropower capacity in South Sulawesi by 600 megawatts (MW). The addition of solar energy and battery systems will serve as a buffer during periods when hydropower output declines.

Strategic Importance of PLN Solar Expansion Program

This initiative is designed to strengthen PLN’s electricity system, making it more diverse, flexible, and resilient to supply challenges. It aligns with the broader objectives outlined in PLN’s 100-gigawatt program and aims to support increasing energy demands in the region.

Timeline and Implementation of PLN Solar Expansion

Details regarding the timeline for the implementation of the new solar and battery systems have not yet been announced. PLN is expected to disclose further information on the project deployment as planning progresses.

Sources for PLN Solar Expansion Information

  1. El Nino Cuts South Sulawesi Hydropower Capacity by 600 MW, PLN Says
  2. Bos PLN Pimpin Langsung Peningkatan Pasokan Sistem Kelistrikan Sulawesi Bagian Selatan
  3. Sulsel Hydroelectric and Thermal Power Plant Production

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