Mumbai-headquartered integrated solar module manufacturer RenewSys has signed a 1.1 GW supply agreement for its polyolefin elastomer (POE) encapsulants with Kosol Energie.

Encapsulant is a protective layer for shielding solar cells from environmental damage.

Under the agreement, RenewSys will supply POE encapsulants to Kosol Energie over a ten-month period from December 2025 to September 2026, supporting the production of advanced, high-efficiency solar modules at Kosol’s state-of-the-art facilities.

RenewSys manufactures solar components, including 30 GW of encapsulants and 4 GW of backsheets, and is installing a high-efficiency solar cell line with a capacity of 4.5 GW. The company generates 640 kW of solar energy across its factories for captive consumption, including 350 kW from ground-mounted systems and 290 KW from rooftop installations.

The company’s POE encapsulants, marketed under the CONSERV range, are UL-certified and suitable for both glass-glass and glass-backsheet modules. The CONSERV E 360 product combines attributes of thermoplastic polyolefin and POE.

According to RenewSys, these encapsulants provide low thermal shrinkage, allowing cutting nearly equal to the glass size with no cell misalignment, better aesthetics, and shorter lamination cycles. They offer ultra-low string shifting, a wide processing window, high gel content of up to 85%, reduced thermal shrinkage, virtually zero thermal creep in glass-glass modules, and testing at 105 degrees for 250 hours.

Kosol Energie is a solar module manufacturer, EPC, and solar solutions provider with over 1 GW executed in utility and commercial, and industrial sectors, and more than 10,000 rooftop projects nationwide.

The company’s in-house capabilities include module and component manufacturing, while its services cover solar park development, battery energy storage systems, floating and ground-mounted systems, and rooftop solar solutions.

In May this year,  RenewSys announced a significant expansion of its encapsulant manufacturing capacity by adding eight new production lines at its facility in Khopoli, Maharashtra. This development will increase the company’s total encapsulant production capacity to 30 GW.

RenewSys recently increased its solar module manufacturing capacity under the updated Approved List of Models and Manufacturers by 1,176 MW.