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Which type of system are you buying?

Not sure? For a quick explanation of system types, Watch Video

Off-Grid Solar
I have NO access to the utility grid. My primary goal is to live where the grid is NOT accessible.

Enter your zip code.

Enter your ZIP code to get started. We’ll look up the cost of electricity, average sun hours, and average energy usage in your area, and use those to calculate your systyem size.

Enter your average monthly electric bill.

How much money on average do you spend on electricity each month?

Per Month

Are you claiming the Federal Tax Credit?

When you install your solar system, 26% of your project expenses apply toward a credit to offset any taxes you owe that year. This federal tax credit is a major incentive to go solar, but it is being phased out by 2022.

Most people are eligible to claim this credit (you must owe federal taxes to be eligible).

Your results:

Your price will vary depending on how you choose to install your Grid-Tie System.
100% DIY
50% DIY
25% DIY
Installation Method:

Install Cost:*

*Includes 26% Federal Tax Credit

Payback Period:

System Size:

25 years savings:

Get started on a personalized quote.

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You Install or Hire Local Contractors.

DIY Solar is about taking CONTROL and ownership of the project. You put in work where you can — and if you can’t do it all yourself, you can hire local contractors to help you out.

More control. More choices. Lifelong service. Faster payback.


Retrieving Systems

Factors That Contribute to the Cost of Solar Panels

There are many factors that contribute to the cost of solar panels. Understanding the how and why of any cost variance will help you plan your solar installation accordingly. Let’s review the elements that impact the overall cost of your solar system and how you can use them to your advantage.

The cost of solar panels has become more and more affordable as the industry grows. In fact, government incentive programs have allowed homeowners to install solar panels at a reduced cost. However, the type of solar panel system, property location, and the size of the system are variables that greatly impact the overall solar panel cost. When you are considering going solar, you should also consider these factors to determine the right system and method of installation for you.

Type of Solar Panel Systems

The type of solar panel system you chose will greatly affect the cost. Grid-tie, grid-tie solar and energy storage, and off-grid solar are all options differ in price. Remember, the best solar panels for your property will fulfill your needs and meet your price point.

Let’s break down the primary purpose of each system:

  • Grid-tie: You have access to the utility grid. Your primary goal is to save money on your electric bill
  • Grid-tie solar and energy storage: You have access to the utility grid and your primary goal is to have backup power when there is an outage.
  • Off-grid: You do not have access to the utility grid. Your primary goal is to live where it is not accessible.

Once you identify your goals, you can make a final decision based on price.

If you have access to the grid, you can lower the cost of solar panels by using a grid-tie system. When you choose a grid-tie system with energy storage, you have the potential to save even more. Storing electricity in the grid doesn’t cost anything, and you may be able to sell your stored energy (depending on your area). An off-grid system is a significant extra cost.

With an off-grid system, you’ll need to purchase batteries which represent almost half the cost of an off-grid solar system.

If you have the option, we recommend connecting a grid-tied system. However, off-grid solar will still save you money in the long run if you want to live away from a utility grid.

Browse our grid-tie solar kits and off-grid solar systems for up-to-date pricing.


The cost of solar panels also varies by location. Typically you’ll see a lower cost-per-watt in warm states, and a higher cost per watt in cold states. Regardless, the cost of solar panels ends up equaling out. Warm states require larger system sizes but charge less per-watt, while cold states have a higher price per-watt, but smaller system sizes.

StateCost per Watt ($/W)Solar Panel Cost RangeE (6 KW System)Solar Panel Cost RangeE (10 KW System)
Arizona$2.34$12,900 – $15,180$21,500 – $25,300
California$2.81$14,460 – $19,260$24,100 – $32,100
Colorado$3.16$16,740 – $21,180$27,900 – $35,300
Connecticut$2.81$15,240 – $18,480$25,400 – $30,800
Washington D.C.$3.37$15,600 – $24,840$26,000 – $41,400
Delaware$2.44$12,540 – $16,740$20,900 – $27,900
Florida$2.55$13,380 – $17,220$22,300 – $28,700
Georgia$2.98$16,020 – $19,740$26,700 – $32,900
Iowa$3.32$19,440 – $20,400$32,400 – $34,000
Idaho$3.24$14,400 – $24,480$24,000 – $40,800
Illinois$3.05$16,500 – $20,100$27,500 – $33,500
Indiana$2.82$14,760 – $19,080$24,600 – $31,800
Louisiana$3.01$16,020 – $20,100$26,700 – $33,500
Massachusetts$2.99$16,020 – $19,860$26,700 – $33,100
Maryland$2.96$15,180 – $20,340$25,300 – $33,900
Maine$2.68$14,760 – $17,400$24,600 – $29,000
Michigan$3.01$15,540 – $20,580$25,900 – $34,300
Minnesota$3.10$16,860 – $20,340$28,100 – $33,900
Montana$2.87$15,060 – $19,380$25,100 – $32,300
North Carolina$2.69$13,800 – $18,480$23,000 – $30,800
New Hampshire$3.11$16,860 – $20,460$28,100 – $34,100
New Jersey$2.48$12,780 – $16,980$21,300 – $28,300
New Mexico$2.97$14,760 – $20,880$24,600 – $34,800
Nevada$2.31$12,420 – $15,300$20,700 – $25,500
New York$3.12$16,380 – $21,060$27,300 – $35,100
Ohio$2.67$14,580 – $17,460$24,300 – $29,100
Oregon$2.80$14,760 – $18,840$24,600 – $31,400
Pennsylvania$2.85$14,640 – $19,560$24,400 – $32,600
Rhode Island$3.00$15,780 – $20,220$26,300 – $33,700
South Carolina$3.00$16,380 – $19,620$27,300 – $32,700
Texas$2.76$14,280 – $18,840$23,800 – $31,400
Utah$2.64$13,800 – $17,880$23,000 – $29,800
Virginia$2.92$15,540 – $19,500$25,900 – $32,500
Vermont$2.81$12,900 – $20,820$21,500 – $34,700
Washington$2.65$14,100 – $17,700$23,500 – $29,500
Wisconsin$3.05$16,800 – $19,800$28,000 – $33,000

System Size

The cost of installing solar panels depends on how much electricity you want to generate and how big your system is. If you get a bigger system, you’ll pay more for the cost and labor. Solar installers typically charge around 75 cents to $1.25 per watt for their labor. These quotes will vary based on factors like the complexity or your project and the availability of competent installers in your region.

It’s important to remember that bigger solar systems will save you money in the long run. You may pay more out of pocket to begin, but you’ll be cutting your utility bill significantly. Let’s break down the average solar panel cost based on system size.

System SizeAvg. System Cost (before Tax Credit)Avg. System Cost (after Tax Credit)
2 kW$5,620$4,159
3 kW$8,430$6,238
4 kW$11,240$8,318
5 kW$14,050$10,397
6 kW$16,860$12,476
7 kW$19,670$14,556
8 kW$22,480$16,635
9 kW$25,290$18,715
10 kW$28,100$20,794
12 kW$33,720$24,953
15 kW$42,150$31,191
20 kW$56,200$41,588
25 kW$70,250$51,985

Solar Panel Cost Per Watt

Panels come in a broad range of sizes, from tiny 5W panels up to 400W+ premium offerings. Evaluating cost-per-watt allows you to compare panels on a level playing field.
The lowest cost-per-watt options will give you more overall power output per dollar spent but will also be less space-efficient.

Federal Tax Credit

When you purchase solar panels, you automatically qualify for a federal solar tax credit. You will get a percentage of what you paid for your solar system back in the form of tax credit. The percentage you receive depends on when you purchase your solar panels.

If you purchase a solar system between 2020 and 2022, you’ll receive a 26% tax credit. In 2023, it decreases to 22%. In 2024 the credit ends for residential owners but will remain at 10% for commercial projects.

With the federal tax credit, the cost of solar panels will be less the sooner you get started! However, it’s important to note that the brand you choose will also impact the bottom line. Unbound Solar® offers a wide variety of solar panel brands so you can get the system you need at the price you want. Browse our solar panel inventory to find your next solar energy system!

Frequently Asked Questions About the Cost of Solar

How much do solar panels cost?

Solar energy cost has plummeted in the past decade. The average cost of solar panels is less than half what it was ten years ago.

As of the time we updated this page (Jan 2021), most solar panel prices fall in the range of 60 cents to 70 cents per watt. Premium panels can climb above $1 per watt depending on their size, quality, and where they are manufactured. Our solar panel calculator uses standard size panels to estimate the cost of your system.

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How much does it cost to install solar panels?

Solar panel installation cost varies by provider. A turnkey solution will charge 100-200% the cost of equipment to perform the installation.

If your 6.6 kW system costs $10k in equipment, they may charge you $20k for the installation, bringing the grand total for the project to $30,000.

The other option is to buy direct from a distributor (like us) and either install it yourself or hire a local contractor to do it for you. If you choose the self-install solar panels, we have instructional videos and a brilliant tech support team to walk you through the project. Some people spend less than $1000 installing their own system (labor costs included).

Even if you hire a local contractor, they’ll charge you somewhere between 75 cents and $1.25 per watt. They’d install the system above for around $6000-$7000, which is less than half the amount you’d pay to a turnkey installer.

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What size solar system do I need?

That’s why you’re here! Our solar power calculator takes the information you provide about your energy usage patterns and returns our best guess about how much solar energy you might need to generate.

We must stress that this is just an estimate. Several more factors will impact your efficiency, like shade, roof material, temperature, mount angle, and so on.

While we provide the most accurate figure we can, it’s impossible to provide an exact number until we know every detail about your project. Consult with a solar design technician to build a system that accounts for the inefficiencies and obstacles unique to your project.

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Is solar energy a sound investment?

It usually is. Between the tax incentives, like the federal solar tax credit and the reduction of your energy bill, you tend to earn more money over the life of the system than you spent on it up front.

Here’s a simple way to approximate your solar ROI (return on investment):

  • Start with your estimated system price, which this calculator provides you.
  • Divide that number by the cost of electricity from your local utility company. The national average is $0.13 per watt, but that can fluctuate dramatically. A Google search for “electricity rates (your location)” will likely surface your local rate.
  • Divide the result by your annual electricity usage in kilowatt hours. You entered your monthly usage in step two; multiply that number by 12 to get a rough estimate of your yearly usage.

All done? You should have a one- or two-digit number. That number is your payback period, measured in years. That’s the time it takes to break even on the initial investment in your system.

Here’s a concrete example, using national averages for energy rates and consumption:

$10,000 system price ÷ $0.13/kWh ÷ 10932 kWh/year = 7.04 Years

Most solar panels are warrantied for 25 years. You can divide the final number (in this case, 7.04) into 25 to calculate the total payoff of your investment into solar. In this case, our example system would pay for itself 3.55 times over the warrantied life of the system.

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How Does the Federal Tax Credit Work?

When you install a solar power system, the federal government rewards you with a tax credit for investing in solar energy.

A tax credit is a dollar-for-dollar reduction of the income tax you owe. $1 credit = $1 less you pay in taxes.

For example, let’s say you owe $5,000 in federal taxes this year. If you claim a $3,000 tax credit, that pays off part of your liability. You would be left to pay just $2,000 in taxes after the credit is applied.

It’s different than a refund, because you have to owe taxes to claim the incentive. But since most people owe taxes, most people end up being eligible.

Check out this video explaining the tax credit to learn more.

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