SEG Solar commissions 2GW cell manufacturing plant in Indonesia

May 12, 2025
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A SEG Solar cell.
SEG Solar plans to expand the facility’s cell manufacturing capacity to 5GW. Image: SEG Solar.

US cell and module manufacturer SEG Solar has commissioned the first phase of its newest cell manufacturing plant, in Indonesia, with an annual production capacity of 2GW.

The company began construction at the facility in the Batang Regency last September, and the start of operations marks the first commercial production of SEG Solar’s “first high-efficiency n-type solar cell”. The cell boasts a conversion efficiency of 26.4% and the company says that the screen printing processes used at the facility allow cells to be produced 20% faster than the industry standard.

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This component of the facility consists of ten cell production lines, and is just the first phase to be commissioned. SEG Solar expects to expand the cell manufacturing capacity to an annual nameplate capacity of 5GW, and develop a “fully vertically integrated industrial chain”, adding silicon rods, wafers and modules to the facility’s output. The company expects to ship products from the Indonesian plant to local markets, and export products to Europe and the US.

The news is SEG Solar’s latest advancement in manufacturing, following the commissioning of a 2GW module manufacturing facility in Texas last year. The last few years have seen US manufacturers look to expand their facilities, particularly following the passage of the Inflation Reduction Act (IRA). Much of this new capacity has been in the module sector, with significantly less investment in more upstream parts of the supply chain, such as ingots, wafers and cells.

However, at last week’s Intersolar Europe event, Abigail Ross Hopper, president and CEO of the Solar Energy Industries Association (SEIA), spoke to PV Tech, and expressed confidence that the solar manufacturing industry has always been a global industry, and is one that the US ought to find its place within, rather than seek to dominate.

“We have about 50GW of modules and about 2GW of cells. It’s certainly our goal to have a robust supply chain, not just for modules but … for the balance of system,” Hopper told PV Tech. “Our position is that this is a global economy and that we will always be a part of the supply chain.”

16 June 2026
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 16-17 June 2026, will be our fifth PV ModulelTech conference dedicated to the U.S. utility scale solar sector. The event will gather the key stakeholders from solar developers, solar asset owners and investors, PV manufacturing, policy-making and and all interested downstream channels and third-party entities. The goal is simple: to map out the PV module supply channels to the U.S. out to 2027 and beyond.

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