Practice of Decarbonization Technology in AGC Seingbouse Float Glass Factory

2026-02-25 09:01:25

As a representative of energy intensive industries, the French Seingbouse float glass plant has achieved breakthrough progress in decarbonization of glass manufacturing through multiple technological innovations and model optimizations under the deep cooperation between AGC Group and energy enterprise E.ON, providing a practical path for the industry's low-carbon transformation.

As a core production equipment, float glass melting furnaces need to operate continuously in high temperature environments. In traditional processes, about 30% of the heat is lost with the flue gas, resulting in energy waste and indirectly increasing carbon emissions. To address this pain point, both parties jointly deployed an organic Rankine cycle (ORC) waste heat power generation unit with a capacity of 1.3 megawatts (MW) in 2024. This technology efficiently captures the waste heat in the furnace flue gas and converts it into carbon dioxide neutral electricity. The generated electricity is directly connected to the factory power supply system, achieving the resource utilization of waste energy and improving energy efficiency from the source.

To further expand the decarbonization effect, AGC fully taps into the spatial potential of the factory area and gradually builds a photovoltaic power generation system in a 27000 square meter factory area. The first 2.7 MW photovoltaic power station will be put into operation in 2024, and the second 5.1 MW photovoltaic facility will be successfully connected to the grid and put into operation at the beginning of 2026. Two systems working together can provide approximately 15 gigawatt hours (GWh) of clean electricity to the factory annually, accounting for a significant share of the total electricity demand. This can reduce approximately 900 tons of carbon dioxide emissions annually, significantly reducing the production process's reliance on traditional fossil fuels.

In terms of cooperation mode, the project adopts an innovative architecture of long-term power purchase agreement (PPA): E.ON fully bears the investment, construction, and operation costs of photovoltaic and waste heat power generation facilities, while AGC purchases the generated electricity at a fixed price. This model not only avoids initial investment pressure for AGC, but also effectively isolates operational risks caused by energy market price fluctuations, ensuring the stability of energy supply. In addition, the project has also received support from the French government and has been included in the "France Relay" program led by ADEME (French Environmental and Energy Management Agency), becoming a typical case of policy guidance and business cooperation to promote decarbonization.

This decarbonization practice is not the first cooperation between the two parties, and its foundation is a long-term partnership established since 2019. Previously, both parties have carried out energy efficiency improvement projects in multiple parts of Europe, including technological transformation projects in Hungary and energy-saving upgrades in multiple factories in the Czech Republic, accumulating rich cross regional cooperation experience and providing mature technical support and model references for the decarbonization project of the Seingbouse factory.