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Celtic Energy’s clients include Fortune 500 Corporations, large and medium sized businesses. The goals of these companies when working with CEI range from reducing utility expenditures, meeting emissions reduction targets, alligning corporate mission statements with business practices, and rebranding as legitimate environmental leaders.

Learn more about the services we offer our corporate clients.

• Performance Contracting
• Energy Audits
• LEED consulting
• Greenouse Gas Emissions Management

Corporate Client List

• ADT Construction Group
• Aetna Insurance
• American Continental Properties, Inc.
• CB Richard Ellis
• Conservation Services Group
• DTC Consultants
• Hartford Insurance
• Hispanic Health Council
• ISO New England
• Kerite Company
• JLMGA Consulting Engineersones Lang LaSalle
• Lutron, Inc.
• Mass Mutual Financial Group
• NCR Corporation
• SLAM Collaborative
• Savin Engineering
• Seasons Federal Credit Union
• Travelers Insurance
• UTC Pratt & Whitney
• William Beaumont Hospital

Full Client List »

Full Case Study List »