As the nature of energy generation and transmission in the U.S. has changed over time, Epsilon has maintained its position as an industry leader. Our energy practice includes comprehensive licensing, siting, and permitting services for all types of power generation and delivery, and has been a mainstay of Epsilon’s practice for over twenty years.

While Epsilon has emerged as an industry leader in permitting renewable power generation facilities, a substantial element of our practice continues to support traditional generation and power delivery.

Our expertise ranges from the permitting of wind and solar power generation facilities to supporting traditional generation and power delivery, including district heating, combined heat and power projects, substation and compressor station development, liquefied natural gas facilities, natural gas pipelines, and underground and overhead electric transmission projects.


The U.S. is experiencing a clean energy revolution that has changed the face of power generation, and Epsilon is at the forefront of the industry.

  • Comprehensive environmental permitting, licensing, and siting services
  • Due diligence evaluations and critical flaw analyses
  • Sound level analyses
  • Shadow flicker analyses
  • Onshore transmission line route assessment
  • Field investigations for wetlands, rare species, and other ecological resources
  • Air permitting and modeling
  • Avian studies

The environmental analysis, licensing, permitting and compliance evaluation services we provide our renewable energy clients are a solid foundation for our practice, but the true value of Epsilon is realized through the cradle to grave support and industry insight we provide.

While the power produced may be the same as any traditional generation project, the regulatory programs and drivers, economics, and means of addressing regional power needs are vastly different for the development of renewables. From supporting our clients’ responses to RFPs from government agencies to obtaining local approvals to supporting construction, Epsilon is intensely focused on supporting our renewable energy developer clients with services our competitors can’t match and doing it in an efficient, comprehensive, and cost-effective manner.

The cornerstone of our renewables practice is Epsilon’s support of offshore wind generation. From both a state and federal perspective, our depth of experience in full licensing of offshore wind projects is unmatched.


Epsilon has a long and proven track record of successfully permitting electric transmission lines, gas pipelines, and their supporting facilities.

The founders of Epsilon included industry leaders in the siting and development of major electric generation and transmission projects. They passed their considerable skills and expertise down to the current generation of Epsilon scientists, engineers, and planners. And as such, siting and permitting of linear power and fuel lines remains a cornerstone of Epsilon’s energy practice, and we are proud to continue our support of local and regional transmission operators.

Our experienced staff has cultivated strong working relationships with the regulatory agencies, and we have a deep knowledge of the regulations and regulatory strategies. We are able to provide important strategic guidance to our clients and identify critical flaws and opportunities during project planning.

This unmatched experience means that Epsilon is leading the way in guiding projects through the Massachusetts Energy Facilities Siting Board and Department of Public Utility approval processes, with dozens of generation and transmission projects fully licensed.

Project Details Boston Harbor HEEC Cable
Boston Harbor HEEC Cable
  • Local, state, and federal environmental permitting
  • Energy Facilities Siting Board and Department of Public Utilities applications
  • Routing analysis, site selection, and evaluation of project alternatives
  • Wetlands delineation, functions and values assessments, and mitigation plans
  • Threatened and endangered species habitat assessments and surveys
  • Photo-simulations
  • GIS mapping
  • Environmental Management and Construction Plans
  • Environmental Inspector Services & Stormwater Pollution Prevention Plans
  • Expert testimony and public hearing presentations
  • FERC resource report preparation

Traditional Energy

Traditional energy generation licensing and permitting has been one of Epsilon’s core services throughout its history.

We provide of a broad spectrum of permitting, compliance, and support services for a variety of facilities, including natural gas generation (baseload and peaking), waste-to-energy facilities, liquefied natural gas facilities, district heating, and institutional and commercial combined heat and power projects.

Our siting and licensing support of new power generation facilities include a range of services from air quality analyses and noise monitoring to wetland delineation, historic preservation, and rare species assessments. Epsilon also performs due diligence studies for power plant acquisitions and assists our clients with fuel type conversions and facility decommissioning.

Epsilon engineers and scientists combine their broad knowledge of the energy industry with experience navigating changing regulatory requirements. They use this knowledge and experience to advocate for our clients, from electric generating facilities, liquefied natural, gas storage facilities, district heating, electric substations, to combined heat and power facilities and guide them through the environmental permitting processes.

Environmental regulatory agencies know Epsilon and what to expect of us, and we know what to expect of them based on many years of working together. Epsilon uses this knowledge to give our clients discrete and practical solutions to obtaining regulatory approvals and helps ensure that no time is wasted on unnecessary steps in obtaining critical project approvals.

Project Details Cricket Valley Transmission Project
Cricket Valley Transmission Project
  • Siting and licensing of new electric and gas generation facilities
  • Department of Public Utilities and Energy Facilities Siting Board Petitions in MA
  • Public Service Commission Applications (Art. VII and Art. 10) in NY
  • Field investigations for wetlands, rare species, and other ecological resources
  • Air permitting and modeling
  • Compliance support for existing facilities
  • Due diligence reviews
  • SWPPP and SPCC preparation and planning
  • Visual simulations

Have any questions?

Marc Bergeron, PWS, CWS Principal

Marc Bergeron, PWS, CWS


Transmission & Offshore Wind

David Klinch, PWS, PMP Principal

David Klinch, PWS, PMP


Transmission & Pipeline Permitting

Maria Hartnett Principal

Maria Hartnett


Offshore Wind