Indonesia's Largest Rooftop Solar Power Plant Officially Operational in Cikarang, Here is its Capacity
The growing and sustainable energy needs in the industrial sector are driving more manufacturing players to integrate Solar Power Plants (PLTS) into their operations. Two Indonesian companies, PT Muliaglass and PT Muliakeramik Indahraya, have collaborated with PT Xurya Daya Indonesia (Xurya) to operate a 22.5 megawatt (MW) capacity rooftop PLTS.
In a statement on Thursday (30/4/2026), Xurya said that the rooftop PLTS at the Mulia Industrial Complex in Cikarang, Bekasi, is the largest installation in Indonesia. Xurya installed 36,862 solar panels across an area of 122,783 square metres, equivalent to 17 times the size of the Gelora Bung Karno football field.
Xurya claims that this installation is projected to reduce more than 26.8 million kilograms of carbon dioxide emissions per year, equivalent to the carbon absorption of 198,258 trees, and decrease reliance on coal by up to 20,000 kilograms per year. The system generates an average of 68,500 kilowatt hours (kWh) of electricity per day to support the electricity needs of production facilities operating 24 hours a day.
The government continues to commit to increasing the role of new renewable energy in the national energy mix. Xurya notes that by the end of 2025, the utilisation of new renewable energy in the national energy mix reached 15.75 percent. However, this achievement is still far from the set mix target.
Amid climate change challenges, uncertainty in fossil fuel prices due to global geopolitical dynamics, and the continuously increasing domestic electricity needs, rooftop PLTS emerges as a relevant, flexible, and quickly implementable solution, including in the industrial sector. The utilisation of rooftop PLTS in the industrial sector aligns with the government’s efforts to strengthen energy self-sufficiency and carry out the energy transition towards Net Zero Emission (NZE).
“We appreciate the achievement of PT Muliaglass and PT Muliakeramik Indahraya in implementing a 22.5 MW capacity rooftop PLTS as an important part of the national energy transition, strengthening energy self-sufficiency, and reducing greenhouse gas emissions,” said the Secretary of the Directorate General of New, Renewable Energy, and Energy Conservation, Ministry of Energy and Mineral Resources, Harris, at the inauguration of the rooftop PLTS on Wednesday (29/4/2026).
As manufacturing companies operating 24 hours every day, PT Muliaglass and PT Muliakeramik Indahraya require a stable and reliable energy supply. This rooftop PLTS is meticulously designed to connect with the production system without disrupting the process or the quality of production results, thus remaining aligned with factory operations.
“This rooftop PLTS is our strategic step to strengthen sustainable operations while maintaining the quality and continuity of production. With a 22.5 MW capacity, this project underscores our commitment to implementing the company’s sustainability agenda through large-scale solar energy utilisation in the industrial sector,” said Director of PT Mulia Industrindo Tbk, Ekman Tjandranegara.
According to Ekman, in addition to supporting the sustainability agenda and energy transition, the utilisation of renewable energy will also improve company efficiency and performance. PT Muliaglass is a glass producer operating since 1989 with a product portfolio for various sectors, including construction, automotive, as well as food and beverages, and meets various standards and certifications, including green industry certificates and halal certification.