Green Mountain Power rates, bills and the 2026 rate filing
Green Mountain Power's 227,727 residential customers in Vermont paid an average of 23.29¢ per kWh in 2025, for an average bill of $139.90 a month on 601 kWh.1 Over the last 12 months (Sep 2025–Aug 2026) the average was 24.44¢, and 24.67¢ in August 2026.2
EIA-861 2025 final (released October 7, 2026) and EIA's monthly utility survey through August 2026 (preliminary); next monthly update expected November 24, 2026. Averages are revenue divided by kWh, all charges included: not the rate printed in a tariff.
13 of 14 Vermont counties served (EIA-861 2025)
Green Mountain Power has 80.8% of Vermont's residential customers on its wires, so its customers make up most of the state's average. They paid 23.29¢ per kWh in 2025 and 24.44¢ per kWh2 over the 12 months from September 2025 to August 2026. Its homes use little electricity, which kept the 2025 bill at $139.901, but January bills run far higher than early-autumn ones.
Three numbers for one price
Green Mountain Power (legally Green Mountain Power Corporation) is Vermont's only investor-owned electric utility, and the largest by far: it sold electricity to 227,7271 homes in 2025. What those homes paid per kWh depends on the period asked about:
- 23.29¢ per kWh1 for the calendar year 2025, from EIA's final annual survey of every utility (EIA-861);
- 24.44¢ per kWh for the 12 months from September 2025 to August 2026, from EIA's monthly sample (EIA-861M, 2026 months preliminary);
- 24.67¢ per kWh2 for August 20263 alone, a single preliminary month.
All three are average revenue per kWh: what GMP's residential customers paid in total, divided by the kWh they used. The customer charge and every rider are inside the figure, which is why it differs from the energy charge printed in GMP's residential rate schedule. Because Vermont has no retail choice, the figure covers supply and delivery together for every GMP home, not only those on a default service as in neighboring states.
Nationally, GMP's 2025 average ranked 20th highest of 177 utilities with 100,000 or more residential customers and was 31.0% above the national average for investor-owned utilities. The middle of that group of 177 utilities, the median, was 15.07¢ per kWh1.
What changed: 2025, the last 12 months and October 2026
From 2024 to 2025, GMP's residential average rose 5.4%, from 22.09¢ per kWh to 23.29¢ per kWh. The average bill rose faster, +8.1%, from $129.46 to $139.90, because use per home also went up, from 586 kWh4 to 601 kWh1 a month.
The monthly survey shows the climb continuing into 2026. The 12-month average of 24.44¢ per kWh (September 2025 to August 2026) sits above the 2025 figure, and the August 2026 average of 24.67¢ per kWh was +8.3%2 against August 2025. For Vermont as a whole, where GMP's customers are the large majority, the same month was up 7.9%3. Both are preliminary readings.
Source: EIA-861M monthly sales and revenue by utility; EIA, Electric Power Monthly / EIA-861M sales and revenue by state. Residential revenue divided by kWh in each month, as reported to EIA's monthly survey (EIA-861M; months since January 2026 preliminary).
Show the numbers
| Month | Green Mountain Power (¢/kWh) | kWh per customer | Bill per customer |
|---|---|---|---|
| January 2025 | 21.87¢ | 807 | $176.48 |
| February 2025 | 22.03¢ | 708 | $155.84 |
| March 2025 | 22.57¢ | 618 | $139.44 |
| April 2025 | 23.32¢ | 500 | $116.70 |
| May 2025 | 23.95¢ | 477 | $114.24 |
| June 2025 | 23.48¢ | 528 | $123.95 |
| July 2025 | 22.53¢ | 660 | $148.63 |
| August 2025 | 22.77¢ | 563 | $128.20 |
| September 2025 | 24.76¢ | 447 | $110.66 |
| October 2025 | 25.62¢ | 498 | $127.50 |
| November 2025 | 24.47¢ | 619 | $151.40 |
| December 2025 | 23.64¢ | 801 | $189.28 |
| January 2026 | 23.51¢ | 833 | $195.96 |
| February 2026 | 23.48¢ | 709 | $166.40 |
| March 2026 | 24.30¢ | 641 | $155.74 |
| April 2026 | 25.07¢ | 478 | $119.85 |
| May 2026 | 25.66¢ | 478 | $122.69 |
| June 2026 | 25.23¢ | 498 | $125.60 |
| July 2026 | 24.42¢ | 604 | $147.51 |
| August 2026 | 24.67¢ | 570 | $140.72 |
None of those figures yet includes GMP's latest rate change. The company's rates were set under a multi-year regulation plan that, according to the Vermont Public Utility Commission, ran from October 1, 2022, through September 30, 2026, with fixed non-power costs forecast at the start and power supply, retail revenue and taxes forecast each year and trued up to actual results. For the period after it, GMP filed a tariff for a rate increase effective with bills rendered on or after October 1, 2026 (Case No. 26-0096-TF). The commission scheduled a public hearing on it for March 5, 2026, and evidentiary hearings for June 2026 to take up the rate filing together with GMP's petition for a new multi-year plan. The commission's case records hold its decision and the rates it approved. EIA's monthly figures will reflect the new rates from the October 2026 data onward; the guide to rate increases explains how a rate case reaches a bill.
A bill that peaks in January
Use per GMP home is low by national standards (601 kWh1 a month in 2025, against 874 kWh for the US), so a high price per kWh produced a bill below the US average of $150.685. The annual figure hides a wide swing. Over the 12 months from September 2025 to August 2026, use per home ranged from 447 kWh in September 2025 to 833 kWh in January 2026, and the average bill in those two months from $110.66 to $195.96. Averaged across those months, a home used 598 kWh and paid $146.082 a month.
Source: EIA-861M monthly sales and revenue by utility. kWh per residential customer in each month (EIA-861M; months since January 2026 preliminary). The table adds the average bill and price for the month.
Show the numbers
| Month | kWh per customer | Bill per customer | ¢/kWh |
|---|---|---|---|
| September 2025 | 447 | $110.66 | 24.76¢ |
| October 2025 | 498 | $127.50 | 25.62¢ |
| November 2025 | 619 | $151.40 | 24.47¢ |
| December 2025 | 801 | $189.28 | 23.64¢ |
| January 2026 | 833 | $195.96 | 23.51¢ |
| February 2026 | 709 | $166.40 | 23.48¢ |
| March 2026 | 641 | $155.74 | 24.30¢ |
| April 2026 | 478 | $119.85 | 25.07¢ |
| May 2026 | 478 | $122.69 | 25.66¢ |
| June 2026 | 498 | $125.60 | 25.23¢ |
| July 2026 | 604 | $147.51 | 24.42¢ |
| August 2026 | 570 | $140.72 | 24.67¢ |
The peak falls in winter, not summer. Vermont averages 366 cooling degree days a year, the 6th lowest among the 48 contiguous states, against 7,383 heating degree days (6th highest6). Yet electric heat as the main heating fuel is rare. The Census Bureau's 2025 survey put the share of Vermont households heating mainly with electricity at 11.0%, the lowest7 among the states (a survey estimate). Even so, GMP's January average was well above its September one, so budget for the January bill rather than the annual average.
GMP beside Vermont's other large utilities
Two other Vermont utilities have 10,000 or more residential customers: Vermont Electric Cooperative, a customer-owned cooperative with 12.8% of the state's residential customers, and City of Burlington Electric, owned by the city, with 6.4%. In 2025 GMP's average of 23.29¢ per kWh was the 2nd highest of the 3: the cooperative's customers paid 24.33¢ per kWh and Burlington's 19.80¢ per kWh. GMP was 2.2% above the Vermont average1, the all-provider figure its own customers dominate.
Source: EIA-861 annual electric power industry report, 2025 final. EIA-861 2025 final. Average revenue per kWh is all charges divided by kWh; it is not a tariff rate.
Show the numbers
| Utility | average residential price (bundled customers) |
|---|---|
| City of Burlington Electric (VT) | 19.80¢ |
| Green Mountain Power (VT) | 23.29¢ |
| Vermont Electric Cooperative (VT) | 24.33¢ |
No Vermont home can pick among them. The Vermont Public Utility Commission states that each of the state's 171 electric distribution utilities has an exclusive service territory. EIA's service-territory records place GMP in 13 of Vermont's 14 counties: Addison County, Bennington County, Caledonia County, Chittenden County, Essex County, Franklin County, Lamoille County, Orange County, Orleans County, Rutland County, Washington County, Windham County and 1 other. In 2 of them no other distribution utility reports service; in the other 118, at least one other utility also does, and each utility's own map decides by address. EIA publishes no price by town.
Source: EIA-861 2025, service territory; Census Bureau, Cartographic boundary file, counties. EIA-861 2025 service territory: 13 counties. Counts whole counties even where the utility serves only part of one; check the utility's own service-area map for an address.
Show the numbers
| County | Other utilities reporting service |
|---|---|
| Addison County | Vermont Electric Cooperative |
| Bennington County | none |
| Caledonia County | Vermont Electric Cooperative, Washington Electric Cooperative, The Town of Lyndon Electric Dept, Town of Hardwick |
| Chittenden County | Vermont Electric Cooperative, City of Burlington Electric |
| Essex County | Vermont Electric Cooperative, The Town of Lyndon Electric Dept |
| Franklin County | Vermont Electric Cooperative, Village of Swanton, Village of Enosburg Falls |
| Lamoille County | Vermont Electric Cooperative, Town of Hardwick, Village of Morrisville, Town of Stowe, Village of Hyde Park, Village of Johnson |
| Orange County | Washington Electric Cooperative |
| Orleans County | Vermont Electric Cooperative, Washington Electric Cooperative, The Town of Lyndon Electric Dept, Town of Hardwick, Barton Village, Village of Orleans |
| Rutland County | none |
| Washington County | Washington Electric Cooperative, Town of Hardwick, Village of Northfield |
| Windham County | Village of Jacksonville |
| Windsor County | Village of Ludlow |
Against New England's investor-owned utilities
GMP belongs to the ISO New England grid region, like the large utilities in the other five New England states. In 2025 full-service homes paid 27.41¢ per kWh at Central Maine Power, 24.17¢ per kWh at Eversource in New Hampshire, 29.45¢ per kWh at Rhode Island Energy, 28.88¢ per kWh at Eversource in Connecticut and 33.66¢ per kWh at National Grid in Massachusetts; Eversource in Massachusetts averaged 21.49¢ per kWh1. One difference matters when reading the chart: outside Vermont, homes can buy supply from a competitive supplier, and those utilities' full-service figures cover only the homes on the state's default or standard-offer supply. GMP's covers all its homes.
Source: EIA-861 annual electric power industry report, 2025 final. EIA-861 2025 final. Average revenue per kWh is all charges divided by kWh; it is not a tariff rate.
Show the numbers
| Utility | average residential price (bundled customers) |
|---|---|
| Eversource (MA) | 21.49¢ |
| Green Mountain Power (VT) | 23.29¢ |
| Eversource (NH) | 24.17¢ |
| Central Maine Power (ME) | 27.41¢ |
| Eversource (CT) | 28.88¢ |
| Rhode Island Energy (RI) | 29.45¢ |
| National Grid (MA) | 33.66¢ |
Smart meters, time-of-use and rooftop solar
Almost every GMP home has an advanced meter: 97.0% of residential meters in EIA's 2025 count, against 79.8% statewide. Time-varying prices are still a small share: 8,792 residential customers, 3.9% of the homes on GMP's wires, were enrolled in time-of-use and critical peak pricing programs in 2025, against 11.3%10 of homes nationally. GMP publishes the hours and prices of its time-of-use rates in its rate schedules; the time-of-use guide explains how such a rate changes a bill.
GMP reported 6,393 net-metered residential solar installations with 79.9 megawatts of capacity, 28.1 per 1,000 residential customers (Vermont: 29.9; US: 38.110). The net metering guide covers how credits for exported power appear on a bill.
Outage minutes
GMP customers averaged 265 minutes without power in 2025 counting major events, more than the Vermont average of 263 minutes, and 190 minutes on days without major events (Vermont: 185 minutes, the 8th highest among the states). The average customer had 1.7511 interruptions. GMP's figures follow another method (not IEEE 1366), so they are not strictly comparable with figures measured under IEEE 1366.
Businesses and help with bills
GMP's 49,185 commercial customers paid an average of 20.38¢ per kWh in 2025, less than homes, with an average bill of $514.38. Its 74 industrial accounts paid 11.45¢ per kWh. Counting every class, its 276,986 customers averaged 19.35¢ per kWh1.
Vermont's federal Low Income Home Energy Assistance Program (LIHEAP) allocation for FY2026 was $23.1 million, $80.93 per occupied household, the highest12 among the states. The guide to help paying an electric bill explains how to apply. For prices, generation and the other utilities statewide, see electricity in Vermont.
Green Mountain Power: common questions
How much does Green Mountain Power charge per kWh?
GMP's residential customers paid an average of 23.29¢ per kWh1 in 2025, 24.44¢ per kWh over the 12 months from September 2025 to August 2026 and 24.67¢ per kWh2 in August 20263 alone (preliminary). Each figure is total residential revenue divided by kWh, so it includes the customer charge and every adjustment on the bill. It is an average, not the per-kWh line in GMP's rate schedule.
What is the average Green Mountain Power bill?
$139.90 a month in 2025 for 601 kWh1, up from $129.464 in 2024. Over the 12 months from September 2025 to August 2026 it averaged $146.08, from $110.66 in September 2025 to $195.96 in January 20262.
Did Green Mountain Power raise rates in 2026?
GMP filed with the Vermont Public Utility Commission for a rate increase effective with bills rendered on or after October 1, 2026 (Case No. 26-0096-TF); the increase the commission allowed is set out in that case's record. EIA's monthly data end in August 20263, before that date, and already show the average at 24.67¢ per kWh, +8.3%2 against the same month a year earlier (preliminary).
Can I buy electricity from someone other than Green Mountain Power?
No. Vermont has no residential retail choice: in 2025, 0.0%1 of Vermont homes bought supply from a competitive supplier. Each Vermont utility serves its own territory, and GMP both delivers and supplies the power for the addresses it serves.
Related pages
Sources
- EIA-861 annual electric power industry report, 2025 final; table Sales_Ult_Cust_2025; 2025, final; released October 7, 2026. www.eia.gov
- EIA-861M monthly sales and revenue by utility; table sales_ult_cust_2025 and _2026; released October 23, 2026. www.eia.gov
- EIA, Electric Power Monthly / EIA-861M sales and revenue by state; table sales_revenue.xlsx (EPM Table 5.6.A); January 2001 to 2026-08; months since January 2026 preliminary; released October 23, 2026. www.eia.gov
- EIA-861 annual electric power industry report, 2024 final; table Sales_Ult_Cust_2024; 2024, final (file updated December 3, 2025); released December 3, 2025. www.eia.gov
- EIA-861 2025, average monthly bill by state; table Average_Bill_2025; 2025, final; released October 7, 2026. www.eia.gov
- NOAA, Climate Prediction Center population-weighted degree days by state; table daily state files, base 65°F; 2016-2025 annual sums; 1981-2010 CPC normals; released November 13, 2026. ftp.cpc.ncep.noaa.gov
- Census Bureau, American Community Survey 2025 1-year estimates, house heating fuel, table B25040; 2025; released October 29, 2026. data.census.gov
- EIA-861 2025, service territory; table Service_Territory_2025; 2025, final; released October 7, 2026. www.eia.gov
- Census Bureau, Cartographic boundary file, counties; table cb_2025_us_county_5m; cb_2021_us_county_5m; 2025 (2021 for Connecticut). www.census.gov
- EIA-861 2025, advanced meters, dynamic pricing and net metering; table Advanced_Meters, Dynamic_Pricing, Net_Metering 2025; 2025, final; released October 7, 2026. www.eia.gov
- EIA-861 2025, reliability; table Reliability_2025; 2025, final; released October 7, 2026. www.eia.gov
- HHS, LIHEAP funding releases to states; table FY2027 first release; FY2026 final; FY2027 first release (October 9, 2026); FY2026 total; released October 9, 2026. acf.gov
Margins of error (±) are at the 90% confidence level. A difference is called significant only when it passes the Census Bureau's test at that level. How every figure is built: methodology. Found an error? Write to [email protected]; corrections are listed on the updates page.