Gregg Therrien


Market Analysis and Resource Planning:
Demand forecasting, Integrated resource planning

Cost allocation, Cost of service studies (marginal and embedded), Incentive regulation, Prudence and project management reviews, Rate design, Regulatory policy, Regulatory strategy, Revenue requirements

Gregg Therrien

Assistant Vice President

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Summary of Experience

Gregg Therrien, Assistant Vice President, is a former utility executive who has held Director level positions at Connecticut Natural Gas Corporation and affiliated companies for more than 15 years.  Most recently, he served as the Director, Gas Construction at Connecticut Natural Gas and The Southern Connecticut Gas Company and Director, Regulatory & Tariffs at UIL Holdings, Inc.  Mr. Therrien’s experience includes regulatory strategies, natural gas growth, infrastructure replacement programs and technical rate case issues such as utility cost of service, rate design, tariff writing and administration, as well as pricing, gas cost accounting, gross margin and load forecasting for regulated utilities.


MBA, Concentration in Finance, University of Connecticut

B.S., Finance, Bryant University (College)

Testified Before

Connecticut Public Utilities Regulatory Authority


Impact of U.S. Federal Tax Reform on Regulated Utilities   PDF

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