Indonesia’s government-owned corporation PT PLN has floated a tender to set up 1.225 GW utility-scale solar projects under its PLTS Mentari Nusantara I project.

The company launched the official tender process on April 30, 2026.

The solar capacity will be set up across Sumatra with 35 MW, Kalimantan with 340 MW, Java with 600 MW, Sulawesi with 50 MW, West Nusa Tenggara with 80 MW, and Maluku and Papua with 120 MW.

The project is expected to be commissioned in 2029.

It is being set up as part of the company’s GIGA ONE initiative, which is an integrated procurement program that bundles multiple solar projects into a single large-scale tender. The strategy aims to improve project bankability, attract global investors, reduce development costs, accelerate renewable energy deployment, and support Indonesia’s domestic solar manufacturing industry through larger, standardized procurement packages.

Under the initiative, the Indonesian government plans to achieve 100 GW of solar capacity.

The procurement strategy will also be replicated in developing hydroelectric, wind, and battery energy storage system projects.

Last December, SEG Solar, a California-based solar module manufacturer, commenced the build-out of a 3 GW ingot and wafer manufacturing facility in Batang Regency, Indonesia.

In June 2025, China-based solar solutions company LONGi launched a solar module manufacturing facility in Delta Mas, West Java, Indonesia. This facility will be established in collaboration with Pertamina, Indonesia’s state-owned energy company, through its subsidiary, Pertamina New and Renewable Energy.

Clean energy sources met all global growth in electricity demand in 2025, marking a structural turning point for the power sector and halting the long-standing expansion of fossil fuel generation, according to a report by Ember. Solar accounted for 75% of global electricity demand growth in 2025, cementing its position as the fastest-growing power source globally. Solar generation rose by a record 636 TWh, a 30% increase from 2024.

In 2022, the European Commission and international partners launched a Just Energy Transition Partnership with Indonesia, under which they will help deploy $20 billion for the country to move away from fossil fuels. The plan was announced during the Partnership for Global Infrastructure and Investment event hosted during the G20 summit in Bali.