How Circular Is Glass?

Glass production, especially from primary sources, is a high energy-consuming process. One way to effectively reduce energy consumption and greenhouse gas (GHG) emissions from the repeated production of single-use glass is to retain material in a circular system – e.g. by utilising the cullet from container glass to produce new container glass, i.e. closed-loop recycling, and thereby removing the need to use glass from primary sources.

To understand the current circularity of single-use container glass in different geographical scopes, this study examines the mass flows of single-use glass packaging in four countries: Germany, France, the United Kingdom and the United States of America. For each case study, the key limitations to circularity are discussed and the potential to improving glass circularity are explored. The study also reviews other limitations and opportunities the single-use container glass industry is facing, and future developments being considered to overcome these challenges.

Available in English.