4 kw solar system

How much does a 4,000 Watt (4 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 4 kilowatt (kW) system is a great place to start for many smaller homes. Learn more about how much a 4 kW solar system costs, how much electricity a 4 kW system will produce, and the smartest way to shop for solar.

How much does a 4kW solar system cost?

As of January 2022, the average cost of solar in the U.S. is $2.77 per watt ($11,080 for a 4 kilowatt solar system). That means that the total cost for a 4,000-watt solar system would be $8,200 after the 26% federal solar tax credit discount (not factoring in any additional state rebates or incentives).

4 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 4 kW solar energy systems in different states across the U.S.

The prices listed below have not had the 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 4,000W (4 kW) solar system cost in my state?

State4 kW solar system price range
Arizona$8,280 – $10,360
California$9,600 – $11,920
Colorado$11,280 – $13,760
Florida$8,560 – $10,960
Massachusetts$11,000 – $13,880
Maryland$10,040 – $13,320
New Jersey$9,600 – $12,720
New York$10,840 – $14,440
Texas$9,080 – $12,040
Washington$9,240 – $11,880

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 4 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 4 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 4 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 4 kW solar energy systems in cities across the U.S. By comparison, the average household in the U.S. uses 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 4 kW solar panel system in top U.S. cities

CityAverage daily kWhAverage monthly kWhAverage annual kWh
Austin, TX16.24945,926
Boston, MA14.54405,284
Cleveland, OH13.34054,857
Denver, CO16.85096,111
Hartford, CT13.64154,979
Las Vegas, NV19.35867,036
Los Angeles, CA17.45286,330
Miami, FL16.04875,849
New York City14.04255,097
Philadelphia, PA14.34345,210
Phoenix, AZ19.05766,914
Seattle, WA11.93634,357

Get the best deal on a 4 kW solar panel system

Now that you know what to expect, you can ensure that you get the best deal on a 4 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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6 thoughts on “How much does a 4,000 Watt (4 kW) solar system cost?

  1. Cj

    I just had a 4kw system installed by tesla last November 2020 in Vallejo,CA. Base price was around 8500.00 not including the 26% tax incentive. A year prior I was getting quotes from 13-15k for a lesser system. I like how simple tesla made their pricing. No need for a salesman to come over and discuss things with you. It was straight forward with Tesla. As for the bad customer service reviews, I figure you will have this experience at other places so I just took a leap at what made the most sense.

  2. Gary Gattis

    I have a 4 kW Solar System installed on my property ground mounting I was told it was gonna be over kill for me but one thing’s for sure when the air conditioning system cames on it’s drawing all the power from the Solar System plus power from the grid so I recommend not getting anything for your house less thann 9 kW Because I am still paying the same electric bill and now I also have to pay for solar equipment.

  3. Barry Odell

    All I’m for sure about is don’t use power home solar theycare rip offs steer clear they got me…if a sales man comes to your door it’s a rip off don’t fool with them. Solar is super easy to install and get going and places like Home Depot sells the whole systems turn key

  4. John

    Hello. I want to know the price of a 4 kWp system in Gettysburg please? I need to know the price after any subsidies or deductions i.e. the cost the customer would pay. I would like to know how much it would save me if my price of electricity is $0.11 per kWh, assuming I use all of the available energy at home. And how much it would save me if I only use half of it? Then I want to know if there are any equivalents to what they have in Europe, where I have been living for the past few years, such as feed in tariffs or payments that the utility company pays me to export energy into the national grid. I’d also like to know if this applies in other states or does not apply in other states and how much is it per kWh?

    1. Khrystyna Smolin-Villegas

      I can’t do the math for how much consumer would pay. But as an owner of solar system SCE pays me in form of a credit for all unused electricity my system produces. I live in the desert and 4kw solar produce around 26 kwh daily so I get around 110$ credit towards my electric bill. Also electric company charges you taxes for using grid, and its around 20$ a month.

  5. Kyle Towns

    I am trying to find an estimate for my 2000 SQFT house in North Pole, AK. It gets good sunlight but only in the spring/summer then most of the fall and winter is darkness. Would this even be worth it in the long run?


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