Solar Panel Cost Guide in Duncan, SC (2025 Update)
- Duncan Solar Installation Cost: $19,511
- 25-Year Savings: $29,405
- Payback Period: 10.9 Years
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Average Cost of Solar Panels in Duncan
We break down average solar pricing in Duncan.
In Duncan, solar panels cost about 3 per watt on average.To cover the typical energy usage of the average home in Duncan, most homeowners require a 8.1-kilowatt system. Using the per-watt figure above, a solar installation costs about $19,511, or $27,901 before the federal solar tax credit of 0 is applied.
These figures are just averages, and the cost of going solar for you may look different based on factors unique to your home and what company you go with.Many homeowners find adopting solar power is a solid investment. The average homeowner in Duncan can save about $21,000 on their electricity bills over 20 years.
To get a free estimate from a highly rated solar installer in Duncan, you can click the button below.
Solar savings over time in Duncan
| Year | Return on Investment |
|---|---|
| 1 years | $-18,026 |
| 3 years | $-15,055 |
| 5 years | $-12,084 |
| 7 years | $-9,114 |
| 9 years | $-6,143 |
| 11 years | $-3,173 |
| 13 years | $-202 |
| 15 years | $2,768 |
| 17 years | $5,739 |
| 19 years | $8,709 |
| 21 years | $11,680 |
| 23 years | $14,650 |
| 25 years | $17,621 |
Top Solar Installers in Duncan
DIY solar panel installation is a way to cut costs, 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 swapping over to solar power much easier. Also, if you’d like to maximize your investment in solar energy, going with a solar company can help with that as well. Different providers can offer repairs, expertise on how to install solar panels and sometimes even information on local incentives and net metering programs.
If you’d like to go solar but still aren’t certain which solar panel company to go with, here are our recommendations for providers near you:
See all of the solar companies in Duncan
Factors that Affect Solar Panel Costs in Duncan
The cost of installing a solar system in Duncan can vary by more than $10,000 from home to home. Your actual cost is dependent on several factors. The biggest one is the size of the system your home needs, and other factors include the equipment you choose, financing options and the solar company you choose.
Solar Equipment
The size of the solar system you need to offset your energy usage, which is measured in kilowatts, is the most important cost factor to consider. For every additional kilowatt you need, your total will most likely increase by around $3,450. There are many different solar panel brands and the one you choose also changes the cost. Typically, the brands that have better efficiency tend to also cost more. In addition, the type of equipment you’re looking to install can affect your total cost. If you only need panels, your system will be much less expensive than if you also need solar batteries or an electric vehicle charger.
Solar Financing Terms
Most solar companies in Duncan have solar loans, which reduce the initial cost of installing solar panels.You’ll have to consider the long-term cost of loans, including the total interest you’ll pay over the length of the loan. If you can only get a high-interest loan, then your total can be hundreds or even thousands of dollars more than the principal cost. Making a larger down payment or securing a solar loan with a low interest rate could reduce your costs significantly.
Solar Panel Installation Company
Finally, the company you opt for to install your solar panels can play a role in determining how much you pay. Duncan’s solar companies all have different labor costs and add varying upcharges to equipment. Larger national companies generally have lower costs, but some local companies keep up with them by offering sales and discounts. While the smaller companies might not have specific equipment options like Tesla Powerwall batteries or add-on services like electric car 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 | $3.59 | $15,070 | $18,192 | 11.3 years |
| 8 kW | $3.52 | $19,706 | $24,642 | 11.1 years |
| 10 kW | $3.45 | $24,150 | $31,286 | 10.9 years |
| 12 kW | $3.38 | $28,400 | $38,123 | 10.7 years |
| 14 kW | $3.31 | $32,458 | $45,153 | 10.5 years |
| 16 kW | $3.24 | $36,322 | $52,376 | 10.2 years |
| 18 kW | $3.17 | $39,992 | $59,792 | 10.0 years |
| 20 kW | $3.11 | $43,470 | $67,402 | 9.8 years |
How to Save on Solar Panels
The solar panel company you choose will affect not only your total costs, but also the types of solar panel brands, warranties, and other equipment you have access to. When choosing a solar company, there are a few important things you should take into account, including:
- Solar Panel Brands: The kind of solar panel you need to get plays a part in which company you should choose, since different companies provide different panels.
- Contract: It’s important to read through your solar installer’s contract well to understand what services they will provide, what the warranty covers and what expectations you should have about the project timeline.
- Reputation: Your solar installer should have a good reputation as a company and have proven expertise in the field. Two ways to check this are to look for whether a company has technicians certified by the North American Board of Certified Energy Practitioners (NABCEP) and if it has positive reviews from past customers.
- Warranty: An all-inclusive, long-term warranty can help keep your solar panel system running for a long time and save you money on part replacement and repairs.
EcoWatch's Duncan, SC Solar Cost FAQs
How much does it cost to install solar panels in Duncan?
The average cost of solar panels in Duncan is about $17,250 for a 5-kW system and $34,500 for a 10-kW system before the ITC, but the real cost will depend on things such as the type of solar panels you want, what size system you need and how much energy you use.
Can you get solar panels for free in Duncan?
Solar panels aren’t free in Duncan, but there are some options that can make getting them more affordable, such as leasing solar panels or getting a solar loan. There may also be local programs or incentives that can help lower the cost.
How much can I save on power bills after switching to solar?
Solar panels can potentially eliminate your electricity bills depending on your location and the efficiency of your system. Even if it doesn’t get rid of them completely, you can save a lot of money on your bills, about $1,108.72 per year.
How many solar panels should I get to power my home?
The exact number of solar panels you need depends on your household energy consumption and the amount of sunlight your roof gets. You can 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 install between 20 and 35 panels to account for 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.