Interconnecting Customer Generation
If you’re a Green Mountain Power customer looking for information about interconnecting your own generation to the grid, you’ve come to the right place. After reviewing the resources outlined below, please contact our team directly at DR@greenmountainpower.com or call 802.770.3399 if you need further assistance.
There are several choices when considering interconnecting your generation source. The easiest way to separate them is by size as well as how you’ll be compensated for the power you produce.
The following codes and standards are required for all interconnection applications or registrations received after November 2, 2018:
- Inverter Source Requirement Document of ISO New England (ISO-NE)
- IEEE 1547-2018
- IEEE 1547.1a-2015
- UL1741 SA
Read GMP’s advisory letter.
- Biennial Net Meter Order 5.1.18 – effective July 1, 2018, Biennial Update of the Net-Metering Program. This references changes to Blended Rate, Siting Adjusters & REC Adjusters.
- State of Vermont Public Utility Commission Net Metering Website (formerly Vermont Public Service Board).
- Vermont SPEED Program
- Renewable Energy Vermont
- GMP’s Self Generation and Net Metering Tariff
- Complete listing of all Distributed Generation Projects proposed to interconnect with the GMP system.
- 30 V.S.A. § 219a amended. Act 99 (Bill H.702) An act relating to self generation and net metering (April, 2014)
- 30 V.S.A. § 248 New gas and electric purchases, investments, and facilities; certificate of public good (May, 2013)
- Rule 5.100 Regulations Pertaining to Construction and Operation of Net Metering Systems
- Rule 5.500 Interconnection Procedures for Proposed Electric Generation Resources
- Net Metering Application Form Eligibility – You may apply for the following types of systems using this form:
- Ground-mounted photovoltaic systems with a capacity of greater than 15 kW and up to and including 50 kW; and
- Non-photovoltaic and non hydroelectric systems with a capacity of up to and including 50 kW.
- Net Metering Registration Form Eligibility – You may register the following types of systems using this form:
- Ground-mounted photovoltaic systems with a capacity of 15 kW or less,
- Roof-mounted photovoltaic systems with a capacity of 500 kW or less, and
- Hydroelectric facilities with a capacity of 500 kW or less.
- Rule 5.500 Standard Application Form Eligibility – You may apply for the following types of systems using this form:
- Net metered, ground mounted photovoltaic systems with a capacity greater than 50kW,
- Net metered systems using technology other than photovoltaic that are not eligible to use the Net Metering Form or Net Metering Registration Form listed above.
- VTPUC Application to Transfer Net-Metering CPG
- This form is to be used if you are transferring a net-metering Certificate of Public Good (CPG) because of a change in ownership of both the property hosting the net-metering system and the system itself.
- VTPUC Notice of Transfer
- This form is to be used if you are transferring a net-metering CPG or Net Metering Record (NMR) where the property hosting the net-metering system and the system itself are owned by the same.
- VTPUC Request Form to Attribute Multiple Net-Metering Systems to a Group
- This form is to be used to merge multiple groups into one if the combined capacity total is less than 500 kW.
- Group Billing Details for GMP
- This form is to be used when forming a group with GMP and should be sent separately from the CPG application. It does not need to be sent to the PSB.
Applications must be submitted to the PSB clerk as well as to GMP. Your GMP copy can be submitted by email to DR@greenmountainpower.com, or mailed to:
Green Mountain Power
2152 Post Road, Rutland, VT 05701
c/o Distributed Resources
- GMP Interconnection Guidelines
- GMP Solar Service Requirements
- GMP Solar Meter Socket Connections
- GMP Solar Service with Battery Storage (Tesla Powerwall) Requirements
- Gross Solar Meter Battery Storage Install Form and Checklist – Requests can be emailed to email@example.com
Looking for a contractor or installer?
Check out Renewable Energy Vermont (REV) at REVermont.org or 802.229.0099. REV is a nonprofit, nonpartisan trade association representing nearly 300 businesses, individuals, colleges and others committed to reducing our reliance on fossil fuels and expanding the availability of renewable sources of power in Vermont.