Saint-Gobain Glass has announced the successful completion of the first year of continuous operation of the VOLTA pilot furnace, marking a significant milestone in the development of low-carbon flat glass manufacturing. Launched in early 2025, the furnace was designed to demonstrate hybrid melting technology at an industrial scale and has consistently delivered stable production and high-quality glass throughout its first year.

According to Saint-Gobain Glass, operational performance met all design expectations, validating the robustness and reliability of the hybrid melting concept. The pilot achieved energy consumption, temperature control, and glass quality levels comparable to conventional float glass production while operating across a broad range of cullet ratios and pull rates.

A key feature of the VOLTA project is its hybrid energy approach, combining electricity and natural gas. The furnace operates with a 50% share of electricity sourced from certified renewable energy and incorporates up to 88% recycled glass (cullet), compared to approximately 40% in traditional production processes.

These advancements have enabled a 66% reduction in fossil fuel consumption and a 71% reduction in Scope 1 and 3 CO₂ emissions related to gas and raw materials. Developed through collaboration between Saint-Gobain Glass and AGC Glass Europe, VOLTA represents an important step toward the future industrial deployment of low-carbon flat glass production.