20 kw solar system

How much does a 20,000 Watt (20 kW) solar system cost?

If you’re shopping for a solar energy system, one of your first questions is probably, “how much will it cost?” Prices depend on the size of your system, the type of equipment you choose, and the state that you live in, but reviewing prices for a 20 kilowatt (kW) system is a great place to start for many smaller homes. Learn more about how much a 20 kW solar system costs, how much electricity a 20 kW system will produce, and the smartest way to shop for solar.

How much does a 20 kW solar system cost?

As of January 2022, the average cost of solar in the U.S. is $2.77 per watt – that comes out to about $55,400 for a 20 kW system. That means that the total cost for a 20 kW solar system would be $40,996 after the federal solar tax credit discount (not factoring in any additional state rebates or incentives).

20 kW solar panel system cost: What are solar shoppers paying in your state?

We looked at data from the EnergySage Solar Marketplace, the leading comparison-shopping platform for homeowners who are considering home solar panel systems, to find out just how much solar shoppers are paying for 20 kW solar energy systems in different states across the U.S.

The prices listed below have not had the 26 percent federal tax credit for solar deducted. Depending on where you live, you might have additional state or local solar incentives and rebates that reduce the price even more. You may even be able to earn extra income by selling your system’s solar renewable energy certificates (SRECs). Even if there are no other incentives where you live, comparing multiple offers from solar companies is important to ensure that you’re finding the best deal. Homeowners who register their property on EnergySage save up to 20 percent just by shopping around for the right option for their home.

How much does a 20,000W (20 kW) solar system cost in my state?

State20 kW solar system price range
Arizona$41,400 – $51,800
California$48,000 – $59,600
Colorado$56,400 – $68,800
Florida$42,800 – $54,800
Massachusetts$55,000 – $69,400
Maryland$50,200 – $66,600
New Jersey$48,000 – $63,600
New York$54,200 – $72,200
Texas$45,400 – $60,200
Washington$46,200 – $59,400

Remember, the cost of solar depends on a lot of factors, so these numbers are just meant to be a starting point. In most cases, you should be able to find a 20 kW solar system in this price range – if you receive offers from solar companies that are much higher or lower, be sure to ask follow-up questions.

How much electricity will a 20 kW solar system produce?

The amount of electricity your solar panels produce depends on many factors, including the direction and angle of your roof. The most important one is how sunny it is where you live – for example, a 20 kW system in Las Vegas makes about 30 percent more electricity in a year than one in Philadelphia. That being said, you don’t have to live in the Southwest for solar to make sense for you. The cost of electricity where you live is the biggest determinant of your solar savings.

The table below shows average estimated electricity production numbers for 20 kW solar energy systems in cities across the U.S. By comparison, the average household in the U.S. uses about 893 kilowatt-hours (kWh) a month, which equals 10,715 kWh per year. We estimated these numbers using PV Watts, a tool developed by the National Renewable Energy Laboratory.

Solar electricity output of a 20 kW solar panel system in top U.S. cities

CityAverage daily kWhAverage monthly kWhAverage annual kWh
Austin, TX81.22,46929,632
Boston, MA72.42,20226,420
Cleveland, OH66.62,02424,284
Denver, CO83.82,54630,557
Hartford, CT68.22,07524,895
Las Vegas, NV96.42,93235,179
Los Angeles, CA86.82,63831,652
Miami, FL80.22,43729,247
New York City69.92,12425,485
Philadelphia, PA71.42,17126,048
Phoenix, AZ94.82,88134,568
Seattle, WA59.71,81621,786

Get the best deal on a 20 kW solar system

Now that you know what to expect, you can ensure that you get the best deal on a 20 kW solar energy system by registering your property on the EnergySage Solar Marketplace. Use the comprehensive, easy-to-understand comparison tables to evaluate all of your equipment options, financing offers, and solar company reviews. When you compare multiple solar quotes, you can feel confident that you’re making a smart investment in your home.

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8 thoughts on “How much does a 20,000 Watt (20 kW) solar system cost?

  1. Marit

    Paul, one easy way to find out if you’re being charged a fair rate is to divide the total system price by total annual kwh. 39000%12990= $3.00 per watt. This is actually a very competitive price here in AZ.

  2. Paul Knox

    I recent just got a quote from a company for a 9.9 KW system. Price was $39,000. System is projected to produce 12,990 KwH per year, or about 112% of my bill ( I know its a bit overkill but I wanted to make sure our bill drops to zero and we don’t have to add later–9KW system was 102% which made me nervous in case projections were off a bit). Looking at SS comments from April though it seems I may be getting overcharged—by quite a bit. I know I only have til 1 Jan to put the system in so looking for some unbiased advice. Do I still have time to get other bids and get one in, and does that price seem reasonable (includes installation etc—credit come later when I file taxes).

    Thanks in advance for any assistance anyone can provide. PS Love the site and all the info on it; looking forward to getting rid of electric bills.

  3. S S

    I completely agree with Jeff – i have been pricing Solar and anything between $1.00 to $1.20 per watt is what I am seeing (and this includes installation. My pricing is for $15KW – $15000 for panels, inverters and all hardware including ground mount. labor to install $5000 + $2000 for concrete and pipes for the ground mount. Total cost : $22,000 for 15KW = $1.50 installed

    And thats based on three quotes from one place

    I know solar contractors need to make a living but charging $40,000 for 2 days work x 2 people is ridiculous

    great article though because it made me realize I need about 2KW – 5KW more 🙂 . So back to the drawing board….

    1. Jeff Travis

      Where did u get ur solar panels? Trying to find the best deal for the money. I would like a good quality solar panels that I competitive price. Thanks

  4. John

    “As of January 2017, the average cost of solar in the U.S. is $3.26 per”

    Ummm… What?! That’s not the price per watt. Where did you get that information? There’s absolutely no WAY that is right. Last I checked, it was $0.50 per watt at the best rate and at most $1.00. There’s no way it went up that much…$3.00 per watt is the price you pay for those smaller 100 watt systems. But not for 20 freaking kilowatts worth of solar panels…

    1. jeff

      John I agree the price are for contractors charging are about 3.50 per watt for materials labor.
      A home owner could install a 20K system for around 1.00 a watt making it 20,000.00 for everything saving about 40,000 over a contractor priceing.

  5. mansha brothers

    I need to install solar system in my home and office. Thank you so much for sharing this article. It would be really helpful for me. Thanks


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