• Business & Services

  • Business Lines

    • Residential Retrofit
    • New Construction
    • Heat/Cooling (HVAC)
    • Appliance Recycling
    • Clean Energy Markets

  • Business Services

    • Program Management
    • Policy & Research
    • Certification Services
    • Applied Building Science
    • Strategic Marketing
    • Customer Contact Centers

  • Case Studies

    • Program Design
    • Appliance Recycling
    • Clean Energy & Renewables
    • Training
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  • Clients

  • Partners

    • Contractors & Energy Auditors
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  • Strategic Alliances

    • Industry Partners & Trade Associations
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• For Consumers

  • Your Home

    • Home Assessments
    • Rebates/Tax Credits
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  • Take Action

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Clients

CSG’s philosophy is one of partnership with its clients. This philosophy is key to meeting the complex challenges of energy efficiency and renewable energy. From designing residential retrofit programs to sharing our knowledge of applied business science, we are focused on delivering measurable results. Browse our clients by region:

• NEW ENGLAND
  
  • Berkshire Gas
  • Department Of Energy Resources (DOER)
  • Efficiency Maine
  • National Grid
  • NSTAR
  • Public Service of New Hampshire
    
    
• MID-ATLANTIC
  • Association for Energy Affordability (AEA)
  • Brookhaven Town
  • Building Performance Institute
  • Con Edison
  • Doris Duke Charitable Foundation
  • Long Island Power Authority (LIPA)
  • National Fuel Gas
  • National Grid
  • New York State Energy Research and Development Authority (NYSERDA)
  • New Jersey Clean Energy Program™
  • New Jersey Dept of Community Affairs
  • NYSEG/RG&E
  • Philadelphia Gas Works
    

• MIDWEST
  
  • Alliant Energy
  • Ameren Illinois
  • Columbia Gas of Ohio
  • ComEd
  • Dayton Power & Light
  • MidAmerican Energy
  • Nicor Gas
  • Springfield Utilities (Missouri)
  • Resale Power Group of Iowa (RPGI)
  • Wisconsin Focus on Energy
    
    
• SOUTHEAST
  
  • Kentucky Housing Corp.
  • State of Tennessee
  • Tennessee Valley Authority
    
    
• WEST/SOUTHWEST
  
  • Arizona Public Service
  • City of Tucson
  • Ecology Action
  • Salt River Project
  • San Diego Gas & Electric
  • Southern California Edison
  • Southern California Gas
  • Tucson Electric Power
  • UniSource Energy Services
    
    
• PACIFIC NORTHWEST
  
  • Clean Energy Works Oregon
  • City of Bainbridge Island Utilities
  • City of Bremerton
  • City of Portland Water Bureau
  • Community Power Works
  • Energy Trust of Oregon
  • Eugene Water & Electric Board (EWEB)
  • Kitsap County
  • Rockwood Water PUD
  • Tualatin Valley Water District