The glass industry has a unique presence in modern society, as this material serves a wide variety of purposes in construction, packaging, electronics, and renewable energy systems. However, glass manufacturing remains an energy-intensive process (consumes about 220 TWh/yr) and contributes
significantly to industrial carbon dioxide emissions (emits about 50–60 MT/yr of CO₂ as of 2020).¹

Efforts toward greener glass production typically focus on the processing side, with research aimed at improving furnace efficiency, increasing cullet content, adopting oxy-fuel combustion, and exploring electrification. However, not all carbon emissions from glass manufacturing arise from fuel combustion—an equally important, yet sometimes overlooked, source of CO₂ is the raw materials themselves.