Scenario: a $100/month electric bill. Assumes 3%/yr rate increases, 0.5%/yr panel degradation and no federal tax credit (the 30% §25D credit ended for systems installed after Dec 31, 2025). How we calculate
Data approachEIA rates · NREL sun hours · 2026 federal policy · methodology
A $100/month electricity bill in Vermont represents roughly 418 kWh per month at the state average rate of 23.95¢/kWh (EIA, Jan–Jul 2026 year-to-date). With 4.1 peak sun hours per day, offsetting that usage takes about a 4.1 kW solar system — roughly 11 panels at 400W — costing about $12,200 installed. Because the 30% federal tax credit ended for systems installed after 2025 and Vermont has full retail net metering, simple payback is about 11.7 years, with an estimated $23,300 net over 25 years.
How Many Solar Panels for a $100 Electric Bill in Vermont?
Vermont electricity rates and sun hours change the math versus the US average. The sizing formula:
System size (kW) = Annual kWh ÷ (Peak sun hours × 365 × 0.82)
For a $100/month bill in Vermont:
Annual usage: ~5,010 kWh/year
Peak sun hours: 4.1 h/day (Vermont)
System size:4.1 kW DC (~11 × 400W panels)
Metric
Vermont
US average
Rate
23.95¢/kWh
18.19¢/kWh
Sun hours
4.1 h/day
4.5 h/day
System size
4.1 kW
4.9 kW
Panels (400W)
11
13
Vermont requires a smaller system than the national average for the same dollar bill because higher rates reduce required kWh. Use our solar system size calculator with your ZIP code for a roof-specific result.
Run the numbers for your state
The savings calculator loads your state's average electricity rate, sun hours and net-metering rule. Then enter your own bill and installer quote.
Free · No signup · Runs in your browser
💰 System Cost
What Does Solar Cost for a $100/Month Bill in Vermont in 2026?
At about $3.00/W installed (a blended 2026 US price; marketplace quotes often run lower), a 4.1 kW system in Vermont costs about $12,200.
The 30% federal Residential Clean Energy Credit (IRC §25D) ended for systems installed after December 31, 2025, so a solar system you buy and install in 2026 gets no federal tax credit. Leases and PPAs are different: the installer that owns the system can still claim the commercial §48E credit for systems placed in service by the end of 2027 and may pass part of that value on through a lower monthly price.
Cost line
Amount
Installed cost (4.1 kW)
$12,200
Federal credit (25D) for 2026 installs
$0
Your cost before state/local incentives
$12,200
Getting three or more quotes matters more than ever without the federal credit: installed prices for the same system often differ by 20–30%.
📈 Payback Period
How Long Is Solar Payback on a $100 Bill in Vermont?
Simple payback divides installed cost by first-year bill savings. Vermont net metering credits exports at a blended residential rate with siting adjustors. We therefore assume solar offsets about 87% of a $100/month bill in Vermont — roughly $1,044/year — for a simple payback of about 11.7 years.
Over 25 years, with 3% annual rate increases and 0.5%/year panel degradation, cumulative bill savings minus the installed cost come to about $23,300. Full retail net metering means each kWh you produce is worth close to your retail rate. Model your own numbers in our solar payback calculator.
Solar vs utility company · 25-year comparison
25-year totals for a $100/month electric bill: 3%/yr rate increases, 0.5%/yr degradation, no federal credit. Methodology
Vermont Solar Incentives for a $100/Month Electric Bill
State and local incentives: Vermont has no state solar tax credit; some utilities (e.g., Green Mountain Power) offer battery programs and incentives.
Net metering: Vermont net metering credits exports at a blended residential rate with siting adjustors.
Check DSIRE and our Vermont solar page for current rebates, net metering rules, and utility-specific programs before signing an install contract.
⚡ System Size
Vermont vs US Average: $100/Month Bill Comparison
Vermont
US average
Monthly bill
$100
$100
System size
4.1 kW
4.9 kW
Installed cost
$12,200
$14,700
Bill offset assumed
87%
75% (blended)
Simple payback
11.7 yrs
16.3 yrs
25-year net savings
$23,300
$16,000
Bottom line: A $100/month bill in Vermont is a reasonable solar candidate with about 11.7-year payback in 2026. Calculate your Vermont savings or compare all states on the $100 bill hub.
Related calculators
Free tools for US homeowners — instant results, all 50 states.
At Vermont's average rate of 23.95¢/kWh and 4.1 peak sun hours, a $100/month bill (~5,010 kWh/year) typically requires a 4.1 kW system — about 11 panels at 400W each. Use our solar system size calculator with your ZIP for a roof-specific estimate.
A 4.1 kW system in Vermont costs roughly $12,200 installed at about $3.00 per watt. The 30% federal tax credit (25D) ended for systems installed after December 31, 2025, so there is no federal credit for a system you buy in 2026. Vermont has no state solar tax credit; some utilities (e.g., Green Mountain Power) offer battery programs and incentives.
At $12,200 installed and ~$1,044/year in bill savings, simple payback in Vermont is about 11.7 years. Vermont net metering credits exports at a blended residential rate with siting adjustors.
With about 11.7-year payback and roughly $23,300 in estimated 25-year net savings, a $100/month bill in Vermont is a reasonable case for buying solar in 2026. See the [Vermont solar page](/states/vt/) for net metering and incentive details.
The US average needs a 4.9 kW system at 16.3-year payback. Vermont needs 4.1 kW with 11.7-year payback — driven by Vermont's 23.95¢/kWh rate and 4.1 daily sun hours.
23.95¢/kWh — Vermont average residential price. Source: EIA Electric Power Monthly, Table 5.6.B (year-to-date through July 2026), residential average retail price (July 2026) (EIA)
Solar production
4.1 peak sun hours/day × 0.82 system derate. Approximate state-average daily solar resource (peak sun hours) based on NREL solar resource data (NSRDB); not location-specific — use NREL PVWatts for an address-level estimate. (NREL PVWatts)
Installed price
$3.00 per watt before incentives. Blended 2026 US residential installed price used by this site; EnergySage marketplace reported about $2.60/W (mid-2026); full-market medians are higher.
Federal tax credit
$0 for homeowner-owned systems installed in 2026 — the 30% §25D credit ended Dec 31, 2025 (IRS)
Net metering
Full retail net metering — solar assumed to offset 87% of the bill. Vermont net metering credits exports at a blended residential rate with siting adjustors.
Estimates only — not tax, legal or financial advice. Get at least three installer quotes and confirm incentives with your utility and a tax professional.