Casestudies_HermanMillerHerman Miller designs, manufactures, produces and sells furniture systems for offices and healthcare environments. The company committed to offset 100% of its electricity use from 2007-2011.

Herman Miller (HMI) was established in 1923 in Zeeland, Michigan. HMI began as a home furniture manufacturer, but today focuses on the design, production, and sale of furniture systems for office and healthcare environments. Today, HMI provides customers with services that bring people and places together in ways that reduce costs and improve performance. HMI employs over 8,000 employees working throughout the world, generating over $2 billion in revenue, and remains headquartered in Zeeland.


As part of its “Perfect Vision” campaign, Herman Miller (HMI) committed to purchase 100% green electricity to offset the electricity used at its various facilities. The challenge for HMI was how to cost effectively offset 100% of its electricity usage with renewable power. Along with its other initiatives, quickly and affordably achieving this goal helped placed HMI in the forefront of its industry as an environmental leader.


  • Green Mountain Energy Company helped HMI achieve this goal by providing cost effective, Green-e certified Renewable Energy Certificates (RECs) to offset 100% of HMI’s electricity use from 2007-2011.
  • HMI’s commitment helped avoid an average of more than 37,783 metric tons (mt) of CO2 emissions annually! That’s like:
    • Not driving a car over 70 million miles
    • The amount of CO2 absorbed by 1 million trees
    • Recycling over 30 million pounds of newspaper

Additional Services Provided By Green Mountain

  • Competitive REC procurement
  • Marketing – PR message maps, environmental talking points and joint press releases
  • Annual Carbon Emissions Profile and Environmental Impact Statements to feature on in Corporate Sustainability Reports and specific corporate websites.
  • Certificates of Purchase


  • 2009: Herman Miller garnered its sixth consecutive placement on the Dow Jones Sustainability World Index, an international stock portfolio that evaluates the annual performance of the world’s largest 2,500 companies using economic, environmental, and social criteria, known as the “triple bottom line” of sustainability.
  • 2007: Herman Miller moved up to No. 14 on CRO magazine’s annual listing of “100 Best Corporate Citizens.” The list takes a systematic approach to assessing the social and environmental characteristics of a good corporate citizen.