Production of brown glass to become more eco-friendly - Brown University's Electric Furnaces Could Slash Glass Emissions by 86%

Scientists at Brown University have created a new way to cut carbon emissions in glass production by 86%. The breakthrough comes as the glass industry faces growing pressure to reduce its environmental impact. The process has already been tested in labs and is now ready for real-world trials with manufacturers.

The team developed the method by changing how glass is made. Instead of using natural gas, the furnaces now run on fully electric heating. A brown pigment is added to the glass mixture before it is melted at high temperatures.

The shift to electric furnaces drastically lowers emissions. Researchers estimate the reduction equals the yearly CO₂ output of about 77,000 households. Funding for the project came from Germany's Federal Ministry for Economic Affairs.

Industry interest is already growing. By early 2026, at least five European glass producers will have tested or installed electric furnaces for container glass. Ardagh Group's pilot in Obernkirchen, Germany, has been running since 2023. Verallia launched a similar project in France last year, while O-I Glass plans pilots in the Netherlands and Germany for 2025. Bormioli Rocco in Italy and Stoelzle in Austria have also announced investments by 2026.

Glass is widely used for beer and wine bottles. The new process could make production far cleaner without changing the final product.

The technology is now moving from labs to factories. If adopted widely, it could transform how glass is made across Europe. The first industrial tests will show whether the 86% emissions cut holds up in large-scale production.