Save Money, Go Green

Energy Solutions for a Sustainable Future

Celtic Energy provides a full range of services to assist our clients in profitably reducing energy consumption and the environmental impact of doing business.

We offer energy solutions for a wide range of clients including Educational, Government, Small Business, Healthcare, and Corporate.

Learn more about the services we offer industries

Educational Solutions

educational We work with a variety of educational clients ranging from some of the largest school districts in the US to universities and corporate training facilities.

Learn more about the services we offer educational facilities

Government Solutions

governmentOur engineers have done everything from conducting energy audits on small historic courthouses from the 1800s to managing complex energy programs at some of the largest military installations in the world.

Learn more about the services we offer our government clients.

Small Business Solutions

Small BusinessCeltic Energy identifies innovative ways to reduce energy waste and costs, creating savings that go right to the bottom line.

Learn more about the services we offer our small business clients.

Corporate Solutions

corporationsCeltic Energy’s clients include Fortune 500’s,such as Travelers, The Hartford, UTC, CBRE, and Jones Lang LaSalle. Their goals range from reducing utility expenditures, meeting emissions reductions targets, and rebranding as legitimate environmental leaders.

Learn more about the services we offer our corporate clients.

About Celtic Energy


Celtic Energy joins the Environmental Defense Fund's Investor Confidence Project

EDF's Investor Confidence Project has developed a best practice framework to standardize the process for predicting and measuring energy savings, enabling acceleration of energy efficiency investments and the emergence of a robust and thriving commercial building sector. 

Celtic Energy has joined on as a Project Ally to help the EDF  & ICP team to define open standards in order to enable the flow of private investment required to launch a global market for energy efficiency in the built environment.

For more information on the EDF's Investor Confidence Project, please vist

Celtic Energy, Inc. Awarded GSA Contract GS-21F-0076YGSA Contract

Celtic Energy, Inc. (CEI) has been awarded GSA Contract GS-21F-0076Y from the United States General Services Administration under Solicitation 6FEC-E6-030292-B.  Our award includes the following Special Item Numbers (SINs):

  • 871 202 – Energy Management Planning and Strategies
  • 871 203 – Training on Energy Management
  • 871 206 – Building Commissioning Services
  • 871 207 – Energy Audit Services
  • 871 211 – Energy Consulting Services

For the past twelve years, the staff of Celtic Energy has provided expert energy efficiency services to Federal, State, and Local Governments. As a Project Facilitator for the U.S. Department of Energy’s Super ESPC program, Celtic Energy managed multi-million dollar Energy Savings Performance Contracting projects for numerous Federal Government clients including: Fort Drum, Fort Benning, DOE Headquarters, McGuire Air Force Base, Edwards Air Force Base, Nellis Air Force Base, NASA, and more.  CEI is currently providing technical oversight, measurement & verification, and commissioning of the Central Utility Plant at the FDA’s White Oak Federal Research Center. 

Celtic Energy, Inc. Develops Best Practices for Energy Savings Performance ContractingESPC Best Practices

Celtic Energy was hired by Connecticut Light & Power (CL&P) and United Illuminating (UI) to develop a comprehensive 'best practices' document for ESPC in the Municipal, University, School, and Hospital markets. Chris Halpin, President of Celtic Energy led the working group which included representatives from State government, City and Town officials, NGO's, ESCO's, and the Energy Efficiency Board. (Download the Best Practices Document)


M&V in Energy Performance Contracting Using ASTM BEPA Methodology

Chris Halpin and Maggie Selig of Celtic Energy have co-authored a white paper in conjunction with Anthony Buonicore, Buonicore Partners, on the topic of M&V in Energy Performance Contracting Using ASTM BEPA Methodology. This is part  of BEPAnews' Crit ical Issues Series: Green Building and Sustainable Development in the Commercial Real Estate Industry.  You can download the white paper here or by visiting 

Energy Savings

Keeping your energy and environmental costs low is especially critical during this time of economic volatility and growing competition.

Hundreds of companies, colleges, hospitals and government agencies have turned to Celtic Energy to help energy users and associated organizations maximize their cost reduction and productivity benefits in the ever-changing energy marketplace.

Celtic Energy provides assistance to clients on a broad range of technical and engineering matters. Our specialists will work in conjunction with a client's in-house staff or handle the project in its entirety.

Our goal is to not only identify strategic cost reduction opportunities for our clients but also assist in their implementation.

Celtic Energy Services »

Celtic Energy is an independent consulting firm founded to help energy users and associated organizations maximize their cost reduction and productivity benefits in the ever-changing energy marketplace. Celtic Energy utilizes an Industry Best Practices philosophy in providing the following services to large commercial, industrial, government, and institutional clients:

Enegry Services Checklist