SEG Solar breaks ground on 5GW TOPCon vertically integrated PV plant in Indonesia

Facebook
Twitter
LinkedIn
Reddit
Email
Government and SEG Solar representatives at the groundbreaking ceremony of a PV plant in Indonesia
The first phase of construction at SEG Solar’s Indonesia plant will build ten n-type production lines, with an annual nameplate capacity of 5GW, by Q2 2025. Image: SEG Solar.

Solar manufacturer SEG Solar has started construction on a 5GW TOPCon vertically integrated—from ingots to modules—solar PV plant in Indonesia.

Construction started less than six months after the company unveiled its plan to build the plant in May 2024. At the time, SEG Solar told PV Tech that the primary focus would be on tunnel oxide passivated contact (TOPCon) technology for the plant, which will be built in the Batang Regency, in the Central Java province.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Built in several phases, the first phase will consist of the construction of ten n-type cell production lines, which SEG Solar plans to complete by Q2 2025. No further timeframe has currently been disclosed for the following construction phases.

Moreover, the company aims to cooperate with other PV component suppliers, including ingots, wafers, junction boxes, frames and EVA films, to establish manufacturing plants in the country.

Michael Eden, SEG Solar co-founder and general counsel, highlighted: “The solar cells and solar panels produced in this industry park will support [the] Indonesian government in its carbon emission reduction plan and supply SEG Solar’s US in Houston module factory, ensuring the traceability and reliability of the supply chain.”

The Houston plant Eden highlights was commissioned in August, with an annual nameplate capacity of 2GW. SEG Solar aims to reach an annual nameplate capacity of 5.5GW modules by the end of 2024.

Read Next

July 28, 2026
US solar PV manufacturer T1 Energy has bought a set of patents for tunnel oxide passivated contact (TOPCon) solar cell and module technology which it said will “differentiate” its position in the US market.
July 23, 2026
US perovskite solar technology company Caelux has signed two agreements with Indian solar manufacturers to produce perovskite-silicon “Hybrid Tandem” modules.
July 20, 2026
JA has begun shipping modules under a multi-gigawatt order bound for a 5.2GW “round-the-clock” solar-plus-storage project in Abu Dhabi.
Premium
July 16, 2026
Jim Wood, SEG Solar's CEO, explains the company's US manufacturing roadmap and why it chose heterojunction technology for its new facilities.
July 16, 2026
In the second of a two-part post, Moustafa Ramadan, head of PV Tech Research, explores the increasingly complex risks associated with solar cell procurement in the US.
July 15, 2026
The chief executive of fledgling US module and cell producer T1 Energy has highlighted his company’s efforts to forge local component manufacturing partnerships and tap homegrown engineering talent.

Upcoming Events

Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
April 20, 2027
Istanbul, Türkiye