Jakarta, INTI - The growing demand for large-scale and sustainable energy in the industrial sector has encouraged more manufacturers to integrate solar power systems into their operations. Two Indonesian companies, PT Muliaglass and PT Muliakeramik Indahraya, have partnered with PT Xurya Daya Indonesia (Xurya) to operate a 22.5-megawatt (MW) rooftop solar power plant.
In a statement released on Thursday, April 30,2026, Xurya said the rooftop solar installation located in the Komplek Mulia Industri has become the largest rooftop solar project in Indonesia. The company installed 36,862 solar panels across an area of 122,783 square meters, equivalent to approximately 17 football fields at Gelora Bung Karno Stadium.
The installation is projected to reduce more than 26.8 million kilograms of carbon dioxide emissions annually, equivalent to the carbon absorption capacity of 198,258 trees, while also reducing coal dependency by up to 20,000 kilograms per year. The system is capable of generating an average of 68,500 kilowatt-hours (kWh) of electricity daily to support 24-hour manufacturing operations.
Supporting Indonesia’s Energy Transition Goals
The Indonesian government continues to strengthen the role of renewable energy in the national energy mix. Xurya noted that by the end of 2025, renewable energy accounted for 15.75% of Indonesia’s national energy mix, although the figure remains below the government’s long-term targets.
Amid climate change challenges, fluctuating fossil fuel prices caused by global geopolitical tensions, and rising domestic electricity demand, rooftop solar systems are increasingly viewed as a flexible and rapidly deployable solution, particularly for industrial sectors. The adoption of rooftop solar also aligns with Indonesia’s broader agenda of achieving energy self-sufficiency and accelerating the transition toward Net Zero Emissions (NZE).
“We appreciate the achievement of PT Muliaglass and PT Muliakeramik Indahraya in implementing a 22.5 MW rooftop solar system as an important contribution to the national energy transition, strengthening energy independence, and reducing greenhouse gas emissions,” said Harris, Secretary of the Directorate General of New, Renewable Energy and Energy Conservation at Indonesia’s Ministry of Energy and Mineral Resources, during the inauguration ceremony on Wednesday, April 29, 2026.
Solar Energy Becomes Strategic Industrial Investment
As manufacturers operating around the clock, PT Muliaglass and PT Muliakeramik Indahraya require stable and reliable energy supplies. The rooftop solar system was carefully designed to integrate seamlessly with production operations without disrupting manufacturing processes or product quality.
“This rooftop solar installation is a strategic step to strengthen sustainable operations while maintaining production quality and continuity. With a capacity of 22.5 MW, this project demonstrates our commitment to advancing corporate sustainability through large-scale solar energy adoption in the industrial sector,” said Ekman Tjandranegara.
According to Ekman, renewable energy adoption will not only support sustainability and energy transition targets but also improve operational efficiency and company performance.
Meanwhile, Eka Himawan stated that the project proves solar energy has become an integral operational strategy for large-scale industries in Indonesia.
“We hope more industrial players will see solar energy as part of a sustainable business strategy,” he said.
Rooftop Solar Adoption Continues to Grow
The increasing adoption of solar energy within the industrial sector is also helping improve production efficiency and reduce emissions. Emmy Suryandari from the Ministry of Industry expressed hope that similar projects could be replicated across other industrial sectors.
She noted that Indonesia’s manufacturing industry grew by 5.3% in 2025, surpassing the national economic growth rate of 5.1%, marking the first occurrence since 2011.
In addition, Vice President of Sales Management at PLN, Yondri Zulfadli, revealed that rooftop solar capacity in Indonesia had reached approximately 861.14 megawatt peak (MWp) by 2026, with around 81% of installed capacity coming from the industrial sector.
The rooftop solar installation at PT Muliaglass and PT Muliakeramik Indahraya was also reviewed by TÜV Rheinland Indonesia, a German-based independent testing, inspection, and certification agency, which confirmed that the project meets high installation quality standards.
“Based on the inspection evaluation, this installation demonstrates a high level of system integration and installation quality, and is ready to operate reliably to support long-term renewable energy needs in industrial facilities,” said Rachmat Kurniawan.
Conclusion
The operation of Indonesia’s largest rooftop solar power system marks a major milestone in the country’s industrial energy transition. Beyond reducing carbon emissions, the project demonstrates how renewable energy can support large-scale manufacturing operations efficiently and sustainably. The initiative also reflects growing collaboration between industry players and the government in accelerating the adoption of clean energy and achieving Indonesia’s long-term Net Zero Emission goals.
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