ENERGY STAR Focus on Energy Efficiency in Glass Manufacturing

The “glass manufacturing focus” is a partnership between EPA’s ENERGY STAR program and glass manufacturing companies to improve energy efficiency within their operations. Tools are available here to help improve manufacturing energy efficiency, save money, and reduce greenhouse gas emissions.

meeting photo
Annual ENERGY STAR Glass Focus Meeting Participants, September 2019

Glass producers can get started on a path of saving energy by using the ENERGY STAR Guidelines for Energy Management to build an energy management program, and then work within this glass manufacturing focus to learn best practices from the industry.  If you are a glass producer who wants to get involved in your industry’s efforts to save energy, contact

Plant energy performance indicator (EPI) tools

Use the ENERGY STAR flat (or float) glass plant and container glass plant EPIs to assess how efficiently these types of plants use energy relative to similar plants in the U.S. ENERGY STAR EPI’s provide a 1 - 100 ENERGY STAR score for a quick understanding of how the plant is performing. Plants receiving a score of 75 or higher are eligible to earn ENERGY STAR certification.

For further information on these EPIs, contact Gale Boyd, Duke University at

To learn more about how EPIs are developed, how to interpret an EPI score, and how to value benchmarking view the Benchmarking Industrial Energy Performance guide.

Award Recipients
Vitro Architectural Glass employees Adam Tomaino, Senior Engineer, and Ricardo Maiz, President present ENERGY STAR labeled plant certificate.

Plant energy guide

Use the energy guide Energy Efficiency Improvement and Cost Saving Opportunities for the Glass Industry to find ways to improve glass manufacturing plant energy performance.

Participating organizations

  • AFG Industries
  • Ardagh Group*
  • Cardinal Corporation
  • Corning, Inc.*
  • Guardian
  • Johns Manville*
  • Owens Corning*
  • Owens Illinois*
  • Pilkington*
  • PPG Industries*
  • Saint-Gobain**
  • Vitro S.A.B.*
  • Zeledyne

* denotes ENERGY STAR Partners

** denotes ENERGY STAR Partner of the Year awardees