Solar Panel Cost Guide in Londonderry, NH (Sep 2022)

  • Londonderry Solar Installation Cost: $9,818
  • 25-Year Savings: $16,082
  • Payback Period: 9.5 Years

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EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated 9/16/2022

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Average Cost of Solar Panels in Londonderry

Find out how much it might cost to make the switch to solar in Londonderry.

The average cost of a solar system in Londonderry is $3 per watt. Since a 4.8-kW system is needed to cover the energy costs of a typical home in Londonderry, the average price of going solar will be about $9,818 before claiming the federal solar tax credit of 30%.

The prices above are just estimates to give you an idea of the cost of a solar panel system. The exact cost of going solar can vary based on a few factors, such as how many panels you need, your energy consumption and what solar installer you go with. Many homeowners find installing a solar panel system is a solid investment. The average homeowner in Londonderry can save about $20,000 on their energy bills over 20 years.

Click the button below to get connected to a top solar panel company in your area for a custom estimate.

Solar savings over time in Londonderry

Year Return on Investment
1 years $-8,782
3 years $-6,710
5 years $-4,638
7 years $-2,566
9 years $-494
11 years $1,578
13 years $3,650
15 years $5,722
17 years $7,794
19 years $9,866
21 years $11,938
23 years $14,010
25 years $16,082

Top Solar Installers in Londonderry

DIY solar panel installation is a choice some homeowners opt for, but it's an undertaking that can use up a lot of your time and energy. Taking advantage of a solar panel installer can make your switch to solar power much easier. Also, companies with a high reputation that cost more upfront could actually save you money in the long run because of their warranties, repair services and expert design.

You can work with a local solar installer to get a free estimate on the cost of solar panels for your home. Here are some in Londonderry:

Best National Provider

SunPower

★★★★★
5.0

  • Most efficient panels on the market
  • National coverage
  • Cradle to Cradle sustainability certification
  • Great warranty coverage
  • Expensive
  • Customer service varies by local dealer

Best Technology

The Green Panel

★★★★★
4.5

  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

Best for Leasing

Sunrun

★★★★★
4.0

  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

See all of the solar companies in Londonderry

Factors that Affect Solar Panel Costs in Londonderry

The cost of installing a solar system in Londonderry can vary by more than $10,000 from home to home. Your actual cost depends on several factors. The most significant one is the size of the system your home needs, and other factors include equipment choices, financing options and the solar installer you choose.

Solar Equipment Size

When it comes to estimating the cost of a solar energy system in Londonderry, one of the most crucial factors is the size of the system you need. Solar systems are sized by kilowatts (kW) and are largely based on your home's energy consumption, which you can determine by looking at past energy bills. Your total cost can increase by about $2,910 for each additional kilowatt you need. Some solar panel brands — like Maxeon from SunPower — are more costly upfront but also tend to offer better efficiency. In a city like Londonderry, where sunlight is relatively abundant, efficiency can quickly pay off. Plus, if you have a small roof or you don't have a lot of space for your panels, higher efficiency options will be a better option. Additional equipment like electric vehicle chargers and solar batteries will also increase the cost.

Solar Financing Terms

Many homeowners find the average cost of solar in Londonderry to be too costly, even if the investment pays off over time. Thankfully, nearly every solar company in the area provides financing options. Solar loans drastically decrease upfront costs in most cases, but they also lead to paying more over time because of interest. However, the interest on solar loans also adds to your all-in costs, so it's vital to consider that as well. You can always bring down the total you pay in interest and in some cases even your APR by making a larger down payment.

Solar Panel Installation Company

The solar installation company you choose will play a role in your total cost to adopt solar power. Different companies will charge different amounts for the equipment and labor. Larger national companies typically have lower costs, but some local companies undercut them by offering sales and discounts. While the smaller companies might not have specific equipment options like Tesla Powerwall batteries or additional services like electric vehicle charger installation, they might be cheaper overall.

Solar Panel Cost Data by System Size

System size Cost per system watt Solar system cost 25-Year savings Payback period
6 kW $3.03 $12,711 $19,535 9.9 years
8 kW $2.97 $16,622 $26,372 9.7 years
10 kW $2.91 $20,370 $33,373 9.5 years
12 kW $2.85 $23,955 $40,536 9.3 years
14 kW $2.79 $27,377 $47,862 9.1 years
16 kW $2.74 $30,636 $55,352 8.9 years
18 kW $2.68 $33,733 $63,004 8.7 years
20 kW $2.62 $36,666 $70,819 8.5 years

Solar Incentives in Londonderry

Name ITC
Type Tax Incentive
Incentive Amount 26% of installation cost
Website Visit here

Name Residential Small Renewable Energy Rebate Program
Incentive Amount $0.20/watt
Incentive Max $1,000 or 30% of system costs, whichever is less
Website Visit here
More Info Click here

Name Local Option - Property Tax Exemption for Renewable Energy and Electrical Energy Storage
Incentive Amount Varies (local option)
Website Visit here
More Info Click here

How to Save on Solar Panels

The company that does your solar system installation will affect the warranties and brands you have access to, and it will also have an impact on your total cost. Because selecting a company can be difficult, we have some tips to help you, such as:

  • Installation Process: One of the most important things to understand when adopting solar energy is the installation process itself. Be sure to align on any details you need to know with your solar installer, such as what permits you should secure and what the project timeline is.
  • Contract: Read the contract terms carefully to make sure you understand the total cost, project timeline rebates and warranties.
  • Solar Panel Brands: Homeowners will have different preferences for panels based on their roof configurations and how much efficiency they need. Even though there are many options for which type of solar panel you can get, not every company will have the exact one you may want or need, so be sure to peruse their list of options before deciding.
  • Reputation: Solar installers that have great reviews from their customers and that have been operating for many years most likely offer high-quality solar panel installation and expertise.

Best National Provider

SunPower

★★★★★
5.0

  • Most efficient panels on the market
  • National coverage
  • Cradle to Cradle sustainability certification
  • Great warranty coverage
  • Expensive
  • Customer service varies by local dealer

Best Technology

The Green Panel

★★★★★
4.5

  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

Best for Leasing

Sunrun

★★★★★
4.0

  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

EcoWatch's Londonderry, NH Solar Cost FAQs

What is the average cost of installing solar panels in Londonderry?

This is a difficult question to answer exactly, because the cost depends on a variety of factors. Broadly speaking, it costs about $14,550 for a 5-kW system and $29,100 for a 10-kW system after the ITC is applied. You can expect to pay more if you want extra solar equipment or more efficient panels, or if you have higher-than-average energy usage. Conversely, you can spend less if you choose a smaller solar panel system or less efficient solar panels.

Can you get solar panels for free in Londonderry?

You can't get solar panels for free in Londonderry. However, you may still be able to afford them on a lower budget. You can lease solar panels for a low upfront cost or, if you'd prefer to own your solar panels, you can finance them with a solar loan.

Does Londonderry have a net metering program?

The majority of states have net metering programs of some kind. Through these, you can either receive compensation for the extra power your system generates or or receive credits to put toward future electricity bills. Currently there are just three states that don't have any net metering laws: Alabama, Tennessee and South Dakota.

How often do you have to replace solar panels?

Although the average lifespan of solar panels is 25 to 30 years, that doesn't mean they stop working completely at that time. What this means is the amount of energy they produce will have decreased significantly after that point. You can choose to replace them once you've had them for that long or you can continue to use them at a lower efficiency.

Our goal is to reach as many people as we can with sensible solutions like solar energy. Our team of full-time local researchers collects solar price and installation data for every city in America then compiles it to create these digestible city guides. If you want to read our solar expert’s opinion on the top solar companies featured here, follow this link.

Company research was conducted by Melissa Smith and Karsten Neumeister. Local data analysis was conducted by James Savino. See something we missed or could do better? Email the editor.

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