GMP Cow Power

May 10, 2023


Green Mountain Power Corporation (GMP), Vermont's largest electric utility, offers a production incentive to farmers who own systems utilizing anaerobic digestion of agricultural products, byproducts, or wastes to generate electricity. 

GMP purchases the renewable energy credits for up to $0.04 per kWh with full subscription of the GMP voluntary Cow Power tariff. Attributes associated with production in excess of voluntary customer demand will be sold on the regional market where possible. The farmers sell the electricity as a separate commodity under the Vermont Standard Offer Program. Eligible systems must be connected to the grid, and although net metering is another option for farmers, it is not available under this arrangement.

GMP sells the renewable energy credits (RECs) and other environmental attributes (i.e. Carbon Credit) generated under this arrangement as part of GMP Cow Power, the utility's green power program. This program offers customers the opportunity to purchase renewable energy for $0.04 per kWh above the retail cost of electricity under any rate class as a tariff rider.

Program Overview

Implementing Sector: Utility
Category: Financial Incentive
State: Vermont
Incentive Type: Performance-Based Incentive
Web Site:
Administrator: Green Mountain Power Corporation
Start Date: 10/2004
Eligible Renewable/Other Technologies:
  • Anaerobic Digestion
Incentive Amount: $0.04 per kWh
Maximum Incentive: None
Terms: Five-year contract; RECs transfer to utility
Ownership of Renewable Energy Credits: Utility


This program has 1 incentives
Technologies: Anaerobic Digestion
Sectors: Agricultural
Parameters: The incentive is 0.04 $/kWh (5 years)


Name: 30 V.S.A. § 8003
Name: Vermont Public Service Board Order, Docket No. 6933
Date Enacted: 07/30/2004
Effective Date: 07/30/2004


Name: Customer Information Center
Organization: Green Mountain Power
Phone: (888) 835-4672

This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.