SUN Energy expands industrial sustainability solutions with battery storage, integrated energy systems

Renewable energy developer SUN Energy is strengthening its sustainability solutions for the industrial sector as part of its business expansion strategy this year, with a focus on containerized battery storage, integrated energy systems, and independent power producer (IPP) projects.

SUN Energy Chief Executive Officer Emmanuel Jefferson Kuesar said the company is prioritizing several key business lines, starting with the deployment of Containerized Battery Energy Storage Systems (CBESS). In 2025, SUN Energy implemented CBESS in the mining sector, marking a milestone for the company and the domestic energy market.

“This project represents the first implementation of CBESS in Indonesia and marks our expansion from solar power generation into integrated energy systems that can address the operational needs of industries with high and fluctuating power loads,” Emmanuel said as quoted in a statement on Tuesday, January 6, 2026.

The use of containerized battery storage enables more efficient utilization of renewable energy, enhances power supply reliability, and reduces dependence on fossil fuels in mining operations. Emmanuel said the success of the project opens opportunities to replicate similar solutions across other energy-intensive sectors, including heavy manufacturing, smelters, and large-scale integrated industrial estates.

“Entering 2026, our focus is no longer limited to solar energy projects. We are also accelerating the development of energy storage technologies such as BESS, particularly for industries with high energy demand such as mining, heavy manufacturing, and other potential sectors,” he said.

SUN Energy also plans to expand cross-ecosystem collaboration by partnering with industrial estates to develop integrated energy systems. These systems will include the electrification of operational vehicle fleets and the development of electric vehicle (EV) infrastructure.

In parallel, the company will strengthen its presence in the industrial segment while expanding its role as an independent power producer to support the development of larger-scale solar power projects. According to Emmanuel, this move is aimed at increasing SUN Energy’s contribution to Indonesia’s national energy mix while broadening the reach of its solar solutions.

As part of this expansion, SUN Energy is reinforcing its business ecosystem through the integration of SUN Mobility, which focuses on transport electrification and EV infrastructure, and SUN Terra, which specializes in the management and optimization of solar energy systems.

“This integration is designed to deliver comprehensive sustainability solutions covering energy, mobility, and resource management, thereby supporting industrial decarbonization efforts in a more holistic manner,” Emmanuel said.

Despite the company’s ambitious plans, Emmanuel acknowledged that long-term emissions reduction remains challenging for many industrial players. He cited issues such as non-integrated clean energy systems across production sites, limited centralized energy data monitoring, and operational complexity in companies with multiple facilities.

“These conditions encourage SUN Energy to develop a more structured and integrated approach,” he said.

Nevertheless, SUN Energy sees continued growth in renewable energy adoption within the industrial sector. Data from state utility PLN show that rooftop solar customers have reached 11,392, with total installed capacity of approximately 772.9 MW. Emmanuel noted that this indicates many decarbonization initiatives are still being implemented independently at the facility level rather than through integrated systems.

To date, SUN Energy has operated solar energy projects totaling 420 MW across four countries, generating more than 650 million kWh of clean electricity and reducing carbon emissions by approximately 506 million kilograms of CO₂ equivalent – equivalent to planting around 5.9 million trees annually.

In Indonesia alone, SUN Energy has developed industrial solar power projects with a combined installed capacity of 240 MW. The strongest growth has come from energy-intensive sectors such as cement, fast-moving consumer goods (FMCG), paper, plastic packaging, electronics, and automotive components manufacturing.

Geographically, solar adoption among SUN Energy’s customers is concentrated in West Java, East Java, and Banten, which serve as Indonesia’s main manufacturing hubs.

This year, the company plans to further expand collaboration with industrial estates. SUN Energy has already installed solar power systems for more than 20 tenants across three industrial zones – Karawang International Industrial City (KIIC), Greenland International Industrial Center (GIIC), and Jababeka Industrial Estate – through a partnership with Bekasi Power. The total installed capacity in these industrial areas exceeds 20 MW, serving a diverse range of industrial and commercial customers.