Carbon footprint for glass when it is made?

The carbon footprint of glass production primarily stems from the energy-intensive processes involved in melting raw materials, such as silica sand, soda ash, and limestone, at high temperatures. The use of fossil fuels for this energy contributes significantly to greenhouse gas emissions. On average, the production of one ton of glass can generate around 0.5 to 1.5 tons of CO2, depending on the efficiency of the manufacturing process and the energy sources used. Recycling glass can significantly reduce its carbon footprint, as it requires less energy than producing new glass from raw materials.