Solar Panel Savings in Derry, NH
Calculate how much you can save with solar panels in Derry, New Hampshire. Based on 3.7 peak sun hours/day and 19.3¢/kWh average electricity rate.
3.7
Peak Sun Hours/Day
19.3¢
Avg Rate (¢/kWh)
8.7 yr
Payback Period
$43k
25-Year Savings
Derry Solar Overview
Calculate Your Derry Solar Savings
Derry average: $174/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
$42,697
Monthly Savings
$104
Federal Tax Credit
$4,536
Cumulative Savings vs System Cost
Cost Breakdown
| Item | Derry | National Avg |
|---|---|---|
| Gross System Cost (6kW) | $15,120 | $17,100 |
| Federal Tax Credit (30%) | -$4,536 | -$5,130 |
| Net System Cost | $10,584 | $11,970 |
| Cost Per Watt | $2.52/W | $2.85/W |
Solar Potential in Derry
Sun Hours vs National Average
Derry gets 18% less sun than the national average, but high-efficiency panels compensate.
Climate Advantages
- 196 sunny days per year
- Average temperature: 42°F — cooler temps actually improve panel efficiency
- Average roof size: 1,879 sq ft — enough for a 104-panel system
Derry Solar Incentives & Programs
Federal Investment Tax Credit (ITC)
30% of total system cost deducted from federal taxes. For a $15,120 system, that's a $4,536 credit. Valid through 2032.
New Hampshire State Incentives
Residential solar rebate program.
Net Metering — Eversource
Eversource offers net metering in Derry. Earn credits for excess solar energy sent to the grid, reducing your electric bill further.
Environmental Impact in Derry
2.7
Tons CO2 Offset/Year
45
Equivalent Trees Planted
0.6
Homes Worth of Energy
Based on 6,482 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 Derry, New Hampshire
Derry, New Hampshire receives an average of 3.7 peak sun hours per day, offering adequate solar resources for homeowners looking to reduce their electricity bills. With electricity rates averaging 19.3¢ per kWh from Eversource, near the national average, solar provides competitive returns on investment.
A typical 6kW solar system in Derry produces approximately 6,482 kWh per year, saving homeowners an estimated $1,250 annually. The system pays for itself in about 8.5 years, after which you enjoy essentially free electricity for the remaining 17+ years of the system's warranty life.
Derry has a solar penetration rate of 7.6% — showing growing adoption of residential solar, with significant room for expansion. The cost of living index of 109.6 (national average: 100) is near the national average.
Other Cities in New Hampshire
Frequently Asked Questions
How much do solar panels cost in Derry, NH?
The average cost of a 6kW solar panel system in Derry is approximately $15,120 before incentives ($2.52/watt). After the 30% federal Investment Tax Credit, the net cost is about $10,584. Residential solar rebate program.
How many peak sun hours does Derry get?
Derry, NH receives an average of 3.7 peak sun hours per day and approximately 196 sunny days per year. While below the national average, solar panels can still provide significant savings due to advancing panel technology.
What is the solar payback period in Derry?
The average solar payback period in Derry is approximately 8.7 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 $42,697.
Does Derry have net metering?
Yes, Derry 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 Derry, NH?
Absolutely. With a 8.7-year payback period and $42,697 in 25-year savings, solar is an excellent investment in Derry. The 30% federal tax credit and above-average electricity rates help make solar financially attractive.