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What is the Cost for a GAF Timberline Solar Energy Shingle Roof?

February , 2023 | 9 min. read

By Nicole Corson

beautiful brick house with solar shingles on the roof

With the rise in popularity of producing solar energy, homeowners are starting to consider going solar when it’s time for a roof replacement. This can be a great idea because using your roof to produce solar energy can be a solid investment.

two roofers installing GAF Timberline Solar Energy Shingles on a roof

But the truth is, everyone isn’t going to be able to afford to invest in solar. That’s why it’s important to know how much a roof replacement is going to cost using the new GAF Timberline Solar Energy Singles.  Before deciding if it’s right for your home.

Unfortunately, roofing contractors like to keep their numbers under lock and key. That is until you offer to invite them to your home to do an inspection. We disagree with that.

Our family at RoofCrafters Roofing has been helping homeowners make their roof replacement decisions for nearly 3 decades. Because of this, we’ll help you determine if the GAF solar shingle roof will be a great investment and fit your budget.

In this article you’ll learn:

2 story house with GAF solar energy shingles

  • The 5 main factors that’ll impact the cost
  • The average cost of a Timberline Solar ES roof
  • The benefits of producing solar energy

By the end of the article, hopefully, you’ll have all the answers you need to decide if solar shingles will be a great investment for you.


5 Factors that Impact the Cost of a GAF Solar Shingle Roof


It would be impossible for us to give you an exact price without knowing all of the many factors used to calculate the costs.

The 5 main factors that’ll impact the costs to produce solar energy are:



  1. The square footage of your roof.

  2. The average annual electricity consumption.

  3. The amount of sun-facing slopes on your roof.

  4. The complexity of your roof replacement project.

  5. The incentives for going solar.


1. The Square Footage of Your Roof


There are several factors that go into a roof replacement. The size of your roof is one of the many factors and will also have one of the greatest impacts on a solar roof investment. A solar roof replacement requires purchasing specially designed asphalt shingles. The new GAF Solar HD asphalt shingles are almost 2 inches larger than the standard architectural shingles. Yes, this means your entire roof has to be replaced. We can't just add solar shingles to your existing roof.

GAF Solar asphalt shingles beside GAF HDZ shingle

The new GAF Timberline Solar HD shingles are designed to be compatible with the GAF Timberline Solar Energy-producing shingles. This requires purchasing the correct amount of Timberline Solar Energy Shingles to power your house. This leads us to our next factor, energy consumption. 


2. What is Your Average Annual Household Energy Consumption?


solar system with diagram of net metering electricity flowElectricity usage over time is measured in watt-hours. Your electricity provider or utility company typically measures usage in kilowatt-hours or kWh. (kWh = kilowatt-hour) One kWh is one kilowatt generated for one hour. Let’s say you use a 40-watt light bulb for five hours, you’ll have used 200 watt hours or 0.2 kWh of electricity. 

We all use different amounts of energy. Depending on how energy efficient your home is and how conscious you are about your energy usage. The good news is you can reduce both and in turn save yourself bundles of money. It really matters how much electricity you consume annually.  Once we know how many KW’s you need we can effectively calculate the size of the solar system needed to power your home. The less energy you consume the smaller the solar system is needed.

3. How Many Sun-Facing Roof Slopes are on Your Home?


We use one of many tools to determine the amount of sun on your roof. The amount of great sun-facing slopes will also have an impact on how many arrays of solar energy shingles will be required. Optimal sun-facing roof slopes are typically east and south-facing roof slopes.

birds eye view of roof with sun-facing roof slope

Having roof slopes that are shaded may require compensation. Which means installing more arrays of solar shingles on less optimal slopes. Compensation is needed sometimes. We need to produce enough electricity to power your home based on your yearly energy consumption. Once this is determined the next main factor that impacts cost is the difficulty of your roof. 

4. The Complexity of Your Roof Replacement Will Impact the Cost


crane loading roof materials on 3 story complex house

Is your roof steep? The steepness of your roof pitch will have a major impact on calculating the final cost of your solar investment. Because the safety and set-up take longer. And the roofers are not able to work as fast. Slower installation times increase the labor cost of any home improvement project. 


We view investing in the new integrated solar energy shingles as doing two home improvement projects in one. New roof and new solar system, all in one. Keep in mind, once the solar roof is installed the electricians will be required to get on the roof to connect all the wiring to make your new system run. If your roof is steep or difficult to access the labor portion of the installation will also increase.  Difficulty or complexity will impact the cost.

two roofers installing an array of GAF Timberline Solar Energy Shingles on a roof

The good news is that incentives available may be able to offset these costs as well as your new roof.

5. What Incentives are Available for Using Your Roof to Produce Energy? 


Financial incentives take many forms. The incentives available are often what help reduce the initial investment. Thus making it much easier to get a return on the investment in a shorter period of time. Our federal and state governments have incentives in place to help homeowners afford to produce clean energy.  

Here is a list of the most popular solar incentives: 

Diagram of solar incentives
  • Federal Solar Tax Credit
  • State Tax Credits
  • Net Metering
  • Local Solar Incentives
  • Sales Tax Exempt
  • Property Tax Exempt
  • Production Incentives
  • Cash Incentives


Incentives will help reduce the cost and in many cases offset the cost of the roof replacement. Thus making the two home improvement projects in one a fairly easy decision.

What is the Cost of a Timberline Solar ES Roof?


installers connecting solar energy shingles

As you can see, there are many factors that'll impact the cost of a new solar energy roof. It would be nearly impossible for us to provide you with an exact cost without knowing all of the factors.  So to be fair, we will provide you with the average cost of a Timberline Solar roof installed on a fairly simple roof of a 2000 to 2500 square foot house.  Fair?

Also very important, is a house that needs a solar system to produce 7 KW of electricity.  Just like the square footage of the house we've selected is average, most houses will range between needing 5 KW and 9 KW of electricity usage. So a 7 KW solar system is average.

 You can expect the average cost of a solar roof system to be between $35,000 and $40,000. That’s before deducting any incentives previously mentioned. By applying the 26% federal tax incentive alone, it'd reduce the average cost to between $25,900 and $29,600.

GAF Solar energy shingles on a roof

Keep in mind,  that the average price we’re providing is for a complete solar roof system. This includes a complete roof replacement. This means installing the new Timberline Solar HD asphalt shingles and installing enough of the new Timberline Energy Shingles to produce 7 KW of electricity. Two home improvement projects in one. 

graph of savings producing clean energy

If you're concerned about the rising cost of electricity. This may be a great investment for you. There's no doubt in our minds that the cost of electricity will continue to rise. Producing your own clean energy and decreasing your reliance on the utility company may be worth looking into.

Let’s go over some of the other benefits of the new GAF-integrated solar shingle roof.

The Benefits of Producing Solar Energy


Here's a list of what we believe may be the top 5 benefits of choosing the new GAF Timberline Solar roofing system for your home.

  1. Substantially reduce your monthly energy bill.

  2. Offset the cost of your roof replacement with electrical savings.

  3. Foster energy independence.

  4. Increase the value of your home by as much as 4%.

  5. Reduce greenhouse emissions and your carbon footprint through clean energy production.

Related read: Are the new GAF Timberline Solar Energy Shingles right for my home? 

Hiring a Great Roofing Contractor to Install Your Timberline Solar Roof System


Now that you have an idea of what the cost will be to turn your roof into an energy-producing asset. You’re probably ready to hire a contractor to start the process. But remember the numbers we provided are only an average cost. The final price will be determined after your local GAF Master Elite Contractor performs the onsite inspection.

Our family here at RoofCrafters Roofing has helped thousands of families over the past 3 decades. Not only by providing high-quality materials and 25-year workmanship warranties. But we’ve also helped by educating them about the roofing industry. And by guiding them to make the best decisions for protecting their families for many years to come.

If you believe that we’ll be a great fit for your roofing or solar needs and would like us to come out to see if a solar roof is right for you submit your info below.  We look forward to discussing your solar goals soon.


Nicole Corson

At RoofCrafters, our mission is to provide job opportunities for others to thrive and grow while making a meaningful impact within our communities.