Although glass is generally considered an eco-friendly material due to being infinitely recyclable in theory, the overall environmental cost of glass is high when you consider the required energy cost and subsequent carbon emissions during manufacturing.

Industry, academic, and government researchers have all devoted a lot of effort to decarbonizing the industry, both in terms of the manufacturing process itself and in terms of how the energy required for glass melting is obtained. But more work needs to be done to achieve true carbon neutrality.