Green Mountain Power net metering in Vermont
Most of Vermont, including Burlington’s suburbs, Rutland, Montpelier and the Northeast Kingdom. Serves roughly three quarters of the state. The current version of its Self Generation and Net Metering tariff took effect with bills rendered on or after 1 October 2026.
- Type
- Investor owned
- Accounts
- 270K
What they credit you
Blended rate, adjusted up or down
Published termsCredits are measured against a statewide blended residential rate currently $0.2071 per kWh, then adjusted by siting and renewable energy certificate adjusters written into your certificate of public good.
- Month to month
- Monetary credits must be used within twelve months, or they revert to GMP without payment.
Published terms · checked 2026-09-05 · source
Installers serving GMP customers
Pick one. Only the company you choose receives your details, and only that company calls you.
- Bold EnergyLocal installerBatteryBBB B+, accredited4.948 GoogleMulti-state installer working from a Texas base and publishing 84 licenses across 31 states, with battery storage, repairs and panel removal alongside new installs.All of VermontSelect this installer
- SunrunLocal installerBattery19 years tradingBBB A+, accreditedThe largest residential solar and home battery company in the United States, trading since 2007 and operating in twenty states.All of VermontSelect this installer
These are real companies operating in GMP territory. Bold Energy is listed first because it is the company we introduce first. That order is our choice, not a score. The other companies are ordered by reviews, years trading and BBB grade. None of them pays us for placement. Pick the one you want and we will call you to arrange it.
Ordering combines three things we read from primary sources: Google review count and rating, years trading taken from the company’s Better Business Bureau profile rather than its own marketing, and its BBB letter grade. BBB accreditation is shown but never scored, because it is a paid membership rather than a mark of quality.
Check any contractor license yourself at the state register. Do that before you sign anything, with any company, including ours.
What this looks like on a GMP bill
An average Vermont household, against a system sized to cover its year. The energy charge is the part that goes to zero. The fixed monthly charge underneath it is the part that never does, and it is the number that decides whether a system pays for itself.
Meter reading falling from 41926 to 41766 kilowatt hours. A 574 kilowatt hour month against 734 kilowatt hours produced leaves 0 kilowatt hours billed and 160 banked for next month, so the energy charge falls from $140.29 to $0.00 at 24.44 cents per kilowatt hour.
Vermont average household use, 574 kWh a month, at the current published residential price of 24.44¢ per kWh. Your utility still bills a fixed monthly customer charge that no system offsets, so this is the energy part of the bill, which is the part that goes away.
Battery backup is mandatory
in GMP territory.
GMP does not credit the power you send back at the rate it charges you to take it.
That does not make solar a bad idea in GMP territory. It changes what you should build. When exports are worth a fraction of retail the credit stops being the return, and the job becomes using more of your own production inside the house, which usually means a larger array than a one for one utility would need.
Sizing is where that gets decided, so ask about it directly. Vermont sets your credit in your own certificate of public good, including the siting and certificate adjusters, so two identical systems can be paid differently. Read the certificate before you read the quote. GMP sets its own limits. Ask GMP what it allows before you accept that a bigger system is off the table.
A battery then does two separate jobs. It moves daytime production into the evening so you use it instead of selling it, and it keeps the house running when the grid goes down. That second job is not a bonus. Panels on their own shut off in an outage, by design, so a roof full of them powers nothing during a storm. That is the part we will not refer around.
So we treat it as a requirement, not an upgrade. We will not refer you for a panels-only system in GMP territory, and you should be skeptical of anyone who quotes you one without raising storage first.
Our referral policy, not a legal or utility requirement
What your installer should be telling you
Ask what REC adjustor will apply to your certificate. For current applications, keeping your certificates costs four cents per kWh on a roughly twenty-one cent credit.
What GMP bills you anyway
In a month when your production covers everything you use, the energy charge can reach zero. This does not. It is the floor under every bill, and it is the number that decides whether a system pays for itself.
- The charge
- $0.660 a day, about $20.08 a month
- How it is set
- Residential Service Rate 1 bills a fixed $0.660 a day, about $20.08 a month, plus $0.22639 a kilowatt hour, in the version effective with bills rendered from 1 October 2026; the schedule states no separate minimum. The net metering tariff then lists what credits cannot touch: “customer charges, energy efficiency charges, electric assistance program charges”, the TGFOV fee, the Emerald Ash Borer and Major Storm adjustors, on-bill financing and equipment rentals are all non-bypassable, so the daily charge is paid in full every month. For systems on GMP’s current net metering rules, a month’s excess generation is monetized at $0.20710 a kilowatt hour, below the 22.639 cent energy rate you pay, then moved up or down by the siting and REC adjustors in your certificate of public good. Any credit not used within twelve months reverts to GMP without payment. An optional production meter costs $110.
Green Mountain Power, Tariff V.P.U.C. 10: Residential Service Rate Schedule, Company Designation 1, effective with bills rendered on or after 1 October 2026; Self Generation and Net Metering, sections 1.0 and 2.0, same effective date · checked 2026-10-01 · source
Applying to GMP
What GMP itself requires, as distinct from what the state rule requires. Read from its own published guidelines on the date shown.
- Your credit starts from a statewide blended rate
- Green Mountain Power’s net metering tariff multiplies excess kilowatt hours by $0.20710 per kWh, a rate that changes with the company’s base rates or by Commission determination. Adjustors written into each system’s certificate of public good then move it up or down.
- Then adjusters move it, and they are in your certificate
- Siting and renewable energy certificate adjusters are set out in each system’s certificate of public good. Two identical arrays can be credited differently depending on what their certificates say.
- The certificate question is worth four cents
- Green Mountain Power’s tariff sets the REC adjustor for applications from 2 February 2021 to 31 July 2028 at zero if you transfer your certificates to GMP, and minus four cents per kWh if you keep them. On a roughly twenty-one cent credit, that is a real decision.
- Keeping your certificates is a real choice, not a technicality
- If you keep them, you can say the electricity your house uses is renewable and you own the attribute. If you transfer them, you are paid for it. Decide deliberately.
- Older systems follow different rules
- GMP’s tariff applies separate rules to pre-existing systems defined in Commission Rule 5.125(A) once they pass ten years from their last commissioning date. If you are buying a house with an older array, ask which rules its credits now follow.
From GMP’s published guidelines · checked 2026-09-05 · source
GMP net metering questions
- Does GMP offer one for one net metering?
- No. Credits are measured against a statewide blended residential rate currently $0.2071 per kWh, then adjusted by siting and renewable energy certificate adjusters written into your certificate of public good.
- What does GMP pay for power sent back to the grid?
- Blended rate, adjusted up or down. Monetary credits must be used within twelve months, or they revert to GMP without payment.
- Do I need a battery with GMP?
- Yes, and we treat it as mandatory. Because GMP does not credit exports one for one, the return has to come from using your own production rather than selling it, which after dark means storage and usually a larger array than a one for one utility would need. The other half is backup: panels alone shut off in an outage, so a battery is what keeps the house running in a storm. We do not refer panels-only systems in GMP territory. This is our referral policy, not a legal or utility requirement.
- How do I find my GMP bill?
- Sign in at greenmountainpower.com. Open My Account, then Billing. Open the latest bill and save the PDF. Or screenshot the summary page. If you cannot get to it, a rough guess at your average monthly amount is enough to start.
- What is the catch with GMP?
- Ask what REC adjustor will apply to your certificate. For current applications, keeping your certificates costs four cents per kWh on a roughly twenty-one cent credit.