Bangkok, Thailand – Constant Energy has signed a landmark agreement with Tongwei Solar, one of the world’s largest solar PV module manufacturers, for the strategic supply of high-efficiency solar modules across Southeast Asia.

Through this partnership, Constant Energy continues to strengthen its position as a trusted partner for Chinese manufacturers expanding into the region. With a proven track record of collaboration with major Chinese industrial clients in Southeast Asia, Constant Energy brings proven experience in the operational standards, decision-making dynamics, and business expectations that define Chinese corporate culture.

As part of the agreement, Constant Energy becomes Tongwei Solar’s first major client in Southeast Asia to procure solar panels at significant volume. Among the projects under this partnership is the 52 MW solar farm in Malaysia, awarded to Constant Energy under the fifth Large Scale Solar (LSS) program launched by the Malaysian government, a flagship development that reflects the scale of both companies in accelerating renewable energy adoption across the region.

“Tongwei Solar is pleased to deepen our partnership with Constant Energy,” said Joe Chen, Director of Overseas Module Business at Tongwei Solar. “With a fully integrated supply chain—from polysilicon production, to high-efficiency solar cells, and finally to module manufacturing—Tongwei provides stable capacity, strong delivery certainty, and rigorous quality control at every step. Our Meishan production base is rewarded as the world’s first ‘Lighthouse Factory’ in the photovoltaic cell sector, setting new benchmarks in automation, digitalization, and manufacturing excellence. With this upstream strength as our foundation, we are able to ensure that every module delivered to Constant Energy meets the highest standards of performance and long-term reliability.”

“This is not a one-off transaction; it signifies the ongoing scale-up of a strategic partnership that began in 2023, when we received our first panels from Tongwei Solar. Since then, our collaboration has continued to accelerate, built on shared values, mutual trust, and a common vision for sustainable development. Constant Energy and Tongwei Solar will continue to collaborate on future projects in Thailand, Malaysia, and Vietnam, supporting industrial growth through clean energy,” said Franck Constant, CEO and founder of Constant Energy.

This partnership sends a clear message: Southeast Asia is ready for large-scale solar adoption, and Constant Energy is leading the way, together with trusted global partners like Tongwei Solar. United by a shared commitment to sustainability, the two companies are powering the future of industry, strategically and responsibly.