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

September 18, 2025
Researchers have called for enhanced international standards to detect ultraviolet-induced degradation (UVID) in PV modules after identifying “severe” levels of the problem in operational n-type panels.             
September 17, 2025
Chinese module producer DAS Solar is planning a 5GW manufacturing facility focused on producing high-efficiency back contact cells.
September 16, 2025
IB Solar is investing INR30 billion (US$340 million) in a 4GW TOPCon solar cell and module manufacturing plant in Jewar, Uttar Pradesh.
September 15, 2025
Vikram Solar has secured a contract to supply 200MW of modules to AB Energia, a domestic solar engineering, procurement, and construction (EPC) solutions provider. 
September 11, 2025
US cell manufacturer ES Foundry is proceeding with expansion plans despite a six-month delay due to recent trade and tax credit policy uncertainties.
Premium
September 11, 2025
PV CellTech USA: US cell manufacturer ES Foundry’s CEO Alex Zhu discusses his company's rapid ascent, strategic technology choices and the challenges of operating in a shifting policy environment.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
September 30, 2025
Seattle, USA
Solar Media Events
October 1, 2025
London, UK
Solar Media Events
October 2, 2025
London,UK
Solar Media Events
October 7, 2025
Manila, Philippines
Solar Media Events
October 7, 2025
San Francisco Bay Area, USA