Solar Panel Savings in Portsmouth, NH
Calculate how much you can save with solar panels in Portsmouth, New Hampshire. Based on 4.4 peak sun hours/day and 21.0¢/kWh average electricity rate.
4.4
Peak Sun Hours/Day
21.0¢
Avg Rate (¢/kWh)
8.5 yr
Payback Period
$55k
25-Year Savings
Portsmouth Solar Overview
Calculate Your Portsmouth Solar Savings
Portsmouth average: $189/mo
South-facing roofs produce the most energy
Add $8,000-$12,000 for whole-home battery backup
Annual Production
kWh/year
Annual Savings
per year
Net System Cost
after 30% ITC
Payback Period
break-even time
25-Year Total Savings
$55,267
Monthly Savings
$135
Federal Tax Credit
$5,778
Cumulative Savings vs System Cost
Cost Breakdown
| Item | Portsmouth | National Avg |
|---|---|---|
| Gross System Cost (6kW) | $19,260 | $17,100 |
| Federal Tax Credit (30%) | -$5,778 | -$5,130 |
| Net System Cost | $13,482 | $11,970 |
| Cost Per Watt | $3.21/W | $2.85/W |
Solar Potential in Portsmouth
Sun Hours vs National Average
Portsmouth gets 2% less sun than the national average, but high-efficiency panels compensate.
Climate Advantages
- 185 sunny days per year
- Average temperature: 45°F — cooler temps actually improve panel efficiency
- Average roof size: 1,825 sq ft — enough for a 101-panel system
Portsmouth Solar Incentives & Programs
Federal Investment Tax Credit (ITC)
30% of total system cost deducted from federal taxes. For a $19,260 system, that's a $5,778 credit. Valid through 2032.
New Hampshire State Incentives
Residential solar rebate program.
Net Metering — Eversource
Eversource offers net metering in Portsmouth. Earn credits for excess solar energy sent to the grid, reducing your electric bill further.
Environmental Impact in Portsmouth
3.2
Tons CO2 Offset/Year
53
Equivalent Trees Planted
0.7
Homes Worth of Energy
Based on 7,709 kWh annual production with a 6kW system. EPA average: 0.417 metric tons CO2 per MWh, 10,632 kWh per US home.
Solar Energy in Portsmouth, New Hampshire
Portsmouth, New Hampshire receives an average of 4.4 peak sun hours per day, offering adequate solar resources for homeowners looking to reduce their electricity bills. With electricity rates averaging 21.0¢ per kWh from Eversource, well above the national average of 16.63¢/kWh, solar panels offer exceptional savings potential.
A typical 6kW solar system in Portsmouth produces approximately 7,709 kWh per year, saving homeowners an estimated $1,618 annually. The system pays for itself in about 8.3 years, after which you enjoy essentially free electricity for the remaining 17+ years of the system's warranty life.
Portsmouth has a solar penetration rate of 8.4% — showing growing adoption of residential solar, with significant room for expansion. The cost of living index of 125.5 (national average: 100) means higher electricity costs, which amplifies solar savings.
Other Cities in New Hampshire
Frequently Asked Questions
How much do solar panels cost in Portsmouth, NH?
The average cost of a 6kW solar panel system in Portsmouth is approximately $19,260 before incentives ($3.21/watt). After the 30% federal Investment Tax Credit, the net cost is about $13,482. Residential solar rebate program.
How many peak sun hours does Portsmouth get?
Portsmouth, NH receives an average of 4.4 peak sun hours per day and approximately 185 sunny days per year. This is near the national average, providing good conditions for residential solar panels.
What is the solar payback period in Portsmouth?
The average solar payback period in Portsmouth is approximately 8.5 years. After payback, your solar panels generate essentially free electricity for the remaining 15-20 years of their warranty. Over 25 years, total savings can reach $55,267.
Does Portsmouth have net metering?
Yes, Portsmouth has access to net metering through Eversource. This allows you to earn credits for excess solar energy sent to the grid, significantly improving your solar investment returns.
Is solar worth it in Portsmouth, NH?
Absolutely. With a 8.5-year payback period and $55,267 in 25-year savings, solar is an excellent investment in Portsmouth. The 30% federal tax credit and above-average electricity rates help make solar financially attractive.