Sigenergy breaks ground on June 29, 2026, on Phase II of its Nantong Intelligent Energy Center in China, according to a company-announced update carried by multiple sources. The project follows the ramp-up of Phase I, which the company says has been operating at full-load production since earlier this year. Phase II focuses on expanding the Nantong site’s intelligent energy storage capabilities and adds a joint venture production facility for energy storage structural components. The announcement describes the Phase II work as part of the broader development of the Nantong Sutong Science and Technology industrial area (as referenced in the sources). While the sources do not provide detailed financial figures or specific capacity targets in the excerpt provided, they consistently frame the Phase II launch as a continuation of existing operations at the Nantong complex and as an effort to increase in-country manufacturing and production related to energy storage systems and components. The reporting presents the event as a construction start, with Phase I already in full-load operation.