Solar Panel Cost Guide in Londonderry, PA (2025 Update)
- Londonderry Solar Installation Cost: $16,690
- 25-Year Savings: $12,965
- Payback Period: 16.7 Years
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Average Cost of Solar Panels in Londonderry
Let’s have a look at the average cost of solar panels in Londonderry.
The national average cost of solar panels is $2.66 per watt, but in Londonderry it’s 4 per watt.To cover the typical energy needs of the average home in Londonderry, most homeowners require a 6.7-kilowatt system. Using the figure above, a solar installation costs around $16,690, or $23,867 before the federal solar tax credit of 0 is applied.
These figures are only estimates, and your own solar costs may differ based on your specific situation and what company you choose to go with.With typical savings of about $14,000 on utility bills over 20 years, many homeowners in Londonderry find installing solar panels can pay off big.
To calculate your potential savings and connect with a local solar installer, click the button below.
Solar savings over time in Londonderry
| Year | Return on Investment |
|---|---|
| 1 years | $-15,447 |
| 3 years | $-12,961 |
| 5 years | $-10,475 |
| 7 years | $-7,990 |
| 9 years | $-5,504 |
| 11 years | $-3,018 |
| 13 years | $-532 |
| 15 years | $1,954 |
| 17 years | $4,440 |
| 19 years | $6,926 |
| 21 years | $9,412 |
| 23 years | $11,898 |
| 25 years | $14,384 |
Top Solar Installers in Londonderry
Although it's possible to install solar panels yourself, it involves extra labor and handiness. For that reason, most homeowners choose a solar panel installer. A solar company can also help save you money over time by offering warranties, repairs and part replacements.
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:
See all of the solar companies in Londonderry
Factors that Affect Solar Panel Costs in Londonderry
Even though the average cost of a solar system in Londonderry is $16,690, your actual cost may be above or below the average. There are several factors that can have a sizable impact on the cost of a solar panel installation. Below are some of the more crucial things to consider.
Solar Equipment
When it comes to estimating the cost of a solar panel 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 primarily based on your home’s energy consumption, which you can gauge by looking at past energy bills. Your total cost can increase by about $3,550 for each additional kilowatt you need.Some solar panel brands — like Maxeon from SunPower — are more expensive upfront but also tend to offer better efficiency. In a city like Londonderry, where sunlight is relatively abundant, efficiency can quickly pay off. In addition, if you have a small roof or you don’t have a lot of space for your panels, higher efficiency options will be more impactful. Additional equipment like electric vehicle chargers and solar batteries will also increase the cost.
Solar Financing Terms
If paying for a solar system out of pocket is difficult, solar loans are an affordable route because they decrease your upfront costs and allow you to pay for your system over five to seven years on average.However, the interest on solar loans also adds to your total costs, so it’s important to consider that as well. You can always reduce the total you pay in interest and in some cases even your APR by putting more money down.
Solar Panel Installation Company
The remaining major cost factor you should keep in mind is the installer you choose. Given the booming popularity of sustainable energy solutions in Londonderry, you’ll have many options to choose from, but each comes at varying price points for labor and equipment.The company’s size can sometimes play the most significant role in the cost. Larger national companies, like SunPro and Sunrun, often have lower pricing because of greater resources and better pricing. Smaller local companies might be more costly, but they can sometimes have better customer service and more customization options, and the occasional sale or promotion can bring their pricing lower to compete with bigger companies.
Solar Panel Cost Data by System Size
| System size | Cost per system watt | Solar system cost | 25-Year savings | Payback period |
|---|---|---|---|---|
| 6 kW | $3.69 | $15,506 | $6,786 | 17.4 years |
| 8 kW | $3.62 | $20,278 | $9,445 | 17.1 years |
| 10 kW | $3.55 | $24,850 | $12,303 | 16.7 years |
| 12 kW | $3.48 | $29,224 | $15,360 | 16.4 years |
| 14 kW | $3.41 | $33,398 | $18,616 | 16.1 years |
| 16 kW | $3.34 | $37,374 | $22,071 | 15.7 years |
| 18 kW | $3.27 | $41,152 | $25,724 | 15.4 years |
| 20 kW | $3.19 | $44,730 | $29,577 | 15.0 years |
How to Save on Solar Panels
There are many solar installers to choose from, all of which offer different warranties, solar panel brands and price points. To help you pick the right company for you, here are some tips to keep in mind:
- Contract: When reading over your solar company’s contract, ask questions about any terms you’re not sure of and be sure you understand what happens in scenarios like a system part breaking or the company going out of business.
- Installation Process: Get detailed information from your solar company about the installation process and what to expect, including when the site survey will be done and how long it will take.
- Warranty: Warranties that cover panel repairs and maintenance over a couple decades are the gold standard in the business, and offering that kind of warranty is one mark of a quality company.
- Reputation: Solar installers that have great reviews from their customers and that have been in business for many years in most cases provide good-quality solar panel installation and expertise.
EcoWatch's Londonderry, PA Solar Cost FAQs
What is the average cost of installing solar panels in Londonderry?
The average cost of solar panels in Londonderry is about $17,750 for a 5-kW system and $35,500 for a 10-kW system before the ITC, but the real cost will depend on things like the kind of solar panels you want, what size system you need and how much energy you use.
Should I lease or buy solar panels in Londonderry?
Leasing solar panels can be an option if you are unable to pay upfront or secure a solar loan, but since you don’t own the system, you can’t take advantage of many solar incentives. Also your home value won’t increase, so you’ll have less savings over time. If you can afford to buy a solar system upfront, then buying is the better option if you want the most bang for your buck from going solar.
Is it worth going solar in Londonderry?
Whether or not solar panels are worth it depends on some different factors like the cost of electricity near you and the amount of direct sunlight your roof gets.
How many solar panels should I get to power my home?
The exact number of solar panels you need depends on your household energy usage and how much sunlight your roof gets. You can take a look at your energy bills for the past year to get an idea of the solar system size you'll need. The average household has to get between 20 and 35 panels to cover their typical energy usage.
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.