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Quick Answer
Green Mountain Power charges ~$0.2146/kWh as of January 2026. GMP's innovative battery program pays customers $850/year for a Tesla Powerwall, making Vermont one of the best states for solar+battery economics. Combined with 1:1 net metering (up to 500 kW) and sales/property tax exemptions, solar payback is 9-11 years with battery.
Track Green Mountain Power rates and discover why GMP's battery program makes Vermont one of the best solar+storage markets in the country.
Current Rate
21.5¢/kWh
Year-over-Year Change
+5.1%Last verified: 2026-03-02 | Source: GMP rate filings, VT PUC
Solar Savings/yr
$2,060
8kW system, net metering
GMP Battery Revenue
$850/yr
Tesla Powerwall enrollment
Payback (Solar+Battery)
12.3 years
Including $850/yr battery revenue
25-Year Savings
$71,049
Solar only, 3% escalation
Green Mountain Power rates have increased moderately, with GMP focusing on grid innovation (batteries, renewables) to control long-term cost growth for ratepayers.
| Period | Rate ($/kWh) | Change | Source |
|---|---|---|---|
| 2024-01 | $0.1935 | -- | VT PUC rate case |
| 2024-06 | $0.1980 | +2.3% | EIA Form 861 |
| 2025-01 | $0.2042 | +3.1% | GMP rate filing |
| 2025-06 | $0.2095 | +2.6% | EIA Form 861 |
| 2026-01 | $0.2146 | +2.4% | GMP rate filing |
GMP (~75% of VT)
$0.2146/kWh
Battery program available
VEC (~12% of VT)
~$0.22/kWh
Vermont Electric Cooperative
BED (Burlington)
~$0.19/kWh
Burlington Electric Dept
GMP's battery incentive is one of the most innovative utility programs in the country. Here's how it works and why it transforms solar+battery economics in Vermont.
Vermont provides strong net metering and tax exemptions. The federal residential ITC (25D) expired, but GMP's battery program fills much of that gap.
Vermont provides full 1:1 retail-rate net metering for systems up to 500 kW. Every kWh exported to GMP's grid earns a credit at the full $0.2146/kWh retail rate. Vermont also allows group net metering, enabling renters and those without suitable roofs to participate in solar.
Vermont exempts solar equipment from the 6% sales tax, saving approximately $1,512 on a typical 8kW system. Solar installations are also exempt from property tax reassessment, keeping your taxes stable.
While Efficiency Vermont doesn't offer direct solar rebates, their heat pump water heater rebates, weatherization programs, and energy efficiency upgrades complement solar installations. Reducing your baseline consumption before going solar means a smaller, less expensive system covers 100% of your needs.
The GMP battery program significantly accelerates payback. Compare solar-only vs. solar+battery at different system sizes.
| System | Gross Cost | Annual Value | Payback |
|---|---|---|---|
| 6kW Solar Only | $18,900 | $1,545 | 11.5 yrs |
| 6kW + Powerwall | $30,900 | $2,395 | 12.4 yrs |
| 8kW Solar Only | $25,200 | $2,060 | 11.5 yrs |
| 8kW + Powerwall | $37,200 | $2,910 | 12.3 yrs |
| 10kW Solar Only | $31,500 | $2,575 | 11.5 yrs |
| 10kW + Powerwall | $43,500 | $3,425 | 12.1 yrs |
* Assumes $3.15/W solar, $12,000 Powerwall installed, 1,200 kWh/kW production. Sales tax exemption applied to solar portion only. No federal ITC (25D expired). GMP battery program pays ~$850/yr.
GMP pays you to let them use your Powerwall during peak demand. No other utility in the country offers this level of battery compensation.
Full retail-rate credits at $0.2146/kWh. Group net metering also available for renters and multi-unit buildings.
Vermont sees frequent winter outages. Solar+battery provides backup power when the grid goes down, plus GMP pays you for the privilege.
GMP is already 100% carbon-free. Adding your own solar + battery further reduces grid dependence while earning income.
Green Mountain Power charges approximately $0.2146/kWh as of January 2026. This reflects GMP's rate structure which includes both supply and delivery charges. GMP's rates are set through proceedings before the Vermont Public Utility Commission (VT PUC).
GMP offers a unique battery incentive: customers who install a Tesla Powerwall (or compatible battery) and allow GMP to dispatch it during peak demand events receive approximately $850/year in bill credits. GMP uses the batteries as a virtual power plant to reduce grid strain during high-demand periods. This is one of the most generous utility battery programs in the nation.
Yes. Vermont provides 1:1 retail-rate net metering for systems up to 500 kW. Every kWh exported to the GMP grid earns a credit at the full retail rate ($0.2146/kWh). Credits roll over monthly. Vermont also allows group net metering, letting renters and others without suitable roofs participate.
At GMP's $0.2146/kWh rate, a typical 8kW solar system has a payback period of approximately 12-14 years based on utility savings alone. However, adding a battery through GMP's program ($850/year revenue) and Efficiency Vermont rebates can reduce effective payback to 9-11 years.
Efficiency Vermont offers rebates for solar-related improvements including heat pump water heaters and energy efficiency upgrades that complement solar installations. Vermont also provides a sales tax exemption for solar equipment and property tax exemption for solar installations. The federal residential ITC (25D) expired December 31, 2025, so homeowners receive no federal tax credit.
GMP serves approximately 75% of Vermont customers at $0.2146/kWh. Vermont Electric Cooperative (VEC) serves ~12% at slightly different rates, and Burlington Electric Department (BED) serves Burlington at competitive rates. All Vermont utilities provide net metering, but GMP's battery program ($850/year) is unique to GMP territory and makes GMP territory the most advantageous for solar+battery installations.
Get a free solar+battery estimate for your GMP account. See your exact savings with net metering, GMP battery revenue, and VT tax exemptions.