Solar Panel Cost Guide in Fairfax, CA (2025 Update)
- Fairfax Solar Installation Cost: $7,653
- 25-Year Savings: $20,310
- Payback Period: 7.3 Years
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Average Cost of Solar Panels in Fairfax
We go over average solar pricing in Fairfax.
In Fairfax, solar panels cost about 3 per watt on average.Using this figure, a typical 3.2-kW system would cost about $7,653 before the 0 federal solar tax credit is applied.
These figures are just averages, and the cost of going solar for you will differ based on your energy needs and what company you want to go with.But, after you've paid the upfront cost of installation, the ROI for most homeowners is typically fruitful, with a net average savings of about $32,000 over 20 years on power bills.
You can click the button below to get connected with a vetted solar installer in Fairfax that can help you get a more accurate cost estimate for your home.
Solar savings over time in Fairfax
| Year | Return on Investment |
|---|---|
| 1 years | $-6,115 |
| 3 years | $-3,039 |
| 5 years | $37 |
| 7 years | $3,113 |
| 9 years | $6,188 |
| 11 years | $9,264 |
| 13 years | $12,340 |
| 15 years | $15,416 |
| 17 years | $18,492 |
| 19 years | $21,567 |
| 21 years | $24,643 |
| 23 years | $27,719 |
| 25 years | $30,795 |
Top Solar Installers in Fairfax
When making the switch to solar, many homeowners prefer to hire a solar installer since overseeing your solar installation yourself can be a time-consuming project. The expertise that solar companies offer can be useful as well, particularly if you don’t quite know what kind of solar equipment would be right for your home.
If you're on the hunt for a solar company in Fairfax, the EcoWatch team has compiled a list of our top suggestions here:
See all of the solar companies in Fairfax
Factors that Affect Solar Panel Costs in Fairfax
There are a number of factors that can affect your solar panel installation cost, such as the size of your system, the equipment you choose, your financing options and the specific company that installs your solar panels.
Solar Equipment
System size, which is measured in kilowatts, is one of the largest factors that determines the overall cost of installing solar panels. That’s why it’s a priority to accurately gauge the size of the solar energy system needed for your home by figuring out your typical energy use.The kind of solar panels and equipment you want is another factor that will substantially influence costs. Solar panels that are more efficient, like monocrystalline panels, tend to cost more. Moreover, solar equipment goes beyond just the solar panels themselves. You’ll also need to decide on the kind of racks used to mount the panels, inverters, solar batteries, etc. It’s important to take all of this into consideration when looking for a solar system that falls within your budget.
Solar Financing Terms
Most solar companies in Fairfax have solar loans, which reduce the initial cost of installing solar.It’s wise to add the interest you’ll pay in your final cost estimate. If you can afford to pay a larger down payment, you can reduce your total costs and the amount of time it’ll take to pay back the loan.
Solar Panel Installation Company
The solar company you choose to handle your switch to sustainable energy can have an effect on your total costs. There are about 3 solar panel companies in Fairfax, and each can charge varying amounts for labor and equipment.Larger national companies usually have lower costs, but some local companies undercut them by offering sales and discounts. While the smaller companies might not have access to specific equipment options like Tesla Powerwall batteries or extra 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 | $3.61 | $15,157 | $34,988 | 7.6 years |
| 8 kW | $3.54 | $19,821 | $47,039 | 7.4 years |
| 10 kW | $3.47 | $24,290 | $59,285 | 7.3 years |
| 12 kW | $3.40 | $28,565 | $71,724 | 7.1 years |
| 14 kW | $3.33 | $32,646 | $84,359 | 7.0 years |
| 16 kW | $3.26 | $36,532 | $97,187 | 6.8 years |
| 18 kW | $3.19 | $40,224 | $110,210 | 6.7 years |
| 20 kW | $3.12 | $43,722 | $123,427 | 6.5 years |
How to Save on Solar Panels
There are a lot of solar installers to choose from, all of which offer different warranties, solar panel brands and price points. To help you find the right company for you, here are some tips to keep in mind:
- Solar Panel Brands: The model of solar panel you need plays a part in which installer you should opt for, since different companies provide different panels.
- Reputation: Solar panel companies that have great reviews from their customers and that have been operating for many years in most cases provide good-quality solar panel installation and expertise.
- Contract: Review the contract terms carefully to make sure you understand the cost breakdown, project timeline rebates and warranties.
- Warranty: Companies typically offer different kinds of warranties that cover different things. A 25-year, all-inclusive warranty is the gold standard.
EcoWatch's Fairfax, CA Solar Cost FAQs
How much does it cost to install solar panels in Fairfax?
The average cost of solar panels in Fairfax is about $17,350 for a 5-kW system and $34,700 for a 10-kW system before the ITC, but the real cost will depend on certain factors like the type of solar panels you want, what size system you need and how much energy you use.
Is cost the most important consideration when buying solar panels?
The initial cost is a very important factor to consider, but whether it’s the most important for you depends on your goals for going solar. In areas where rooftop space is limited, efficiency can trump the cost. Other factors that are important to consider are the quality and durability of your solar panels.
Is going solar worth it?
Solar panels can be a fruitful investment for most homeowners, but they might not be worth it for everyone. If your home doesn't get a lot of direct sunlight and/or your power bills are already fairly low, solar panels might not be for you.
How long do solar panels last in Fairfax?
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 how much 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 keep using 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.