Benefits and Costs of Solar Roof Tiles in 2023

Oct. 28, 2024

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Benefits and Costs of Solar Roof Tiles in

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Feb 13,

What Are Solar Roof Tiles?

Solar roof tiles, also known as solar shingles or solar slates, are a relatively new green energy technology. For those committed to sustainable energy generation and wanting to have a solar-powered home, solar roof tiles are a worth-considering alternative to solar panels.

Compared to the latter, solar roof tiles&#; distinctive feature is how they adapt to different styles. This is a significant advantage if you live, for instance, in a heritage area where regulations forbid changes to the buildings. Solar shingles&#; finished look is much less aesthetically disruptive than traditional solar panels, as they blend seamlessly with the roof.

Although solar roof tiles are not widely available in the UK yet, they are moving from being a premium product to a common alternative to &#;bolt-on&#; solar panels. The reason is that the technology behind them is becoming increasingly price-competitive and popular.

Types of Solar Roof Tiles

A solar tile can be made of classic monocrystalline solar cells or thin-film PV (photovoltaic) cells. Thin-film solar cells are budget-friendly, second-generation solar cells. They require less material and are very easy to manufacture. Furthermore, they contain no toxic components and generate less waste. Besides being thin, thin-film solar cells are more flexible and lightweight.

As of today, thin-film solar cells are less efficient and have lower power capacities than monocrystalline solar cells. However, experts expect thin-film cells to improve in efficiency in the future, as they have a higher theoretical efficiency than monocrystalline silicon cells. They also have a better temperature coefficient, making them more resistant to high temperatures.

Whilst thin-film PV&#;s lifespan is shorter (10 to 20 years), they boast a faster payback time (around 8 years) due to their lower price to buy and also install. This feature of thin-film cells apply to solar roof tiles and different types of solar panels alike.

In addition to solar cell types, manufacturers may offer different solar roof tiles styles. Solar shingles may come in Textured, Smooth, Slate, or Tuscan styles, just to name a few.

Cost of Solar Roof Tiles

Since it is a relatively new technology, solar roof tiles in the UK can cost twice as much as traditional solar panels. The final price depends mainly on the size of the roof and the proportion of the roof you would like to cover with solar slates. You would also have to consider the complexity of the installation process and the installer&#;s rates.

Below you will find a table with estimated solar roof tiles costs in the UK. We have also included solar panel typical prices as a reference. The information available is from the last quarter of .

Solar Roof Tiles UK &#; Costs

System Size

Solar Tile Cost (Inc. VAT)

Labour Cost

Total Average cost

Typical Solar Panel Cost

1kW

£5,500 &#; £7,000

£1,800

£8,050

£1,440

2kW

£7,000 &#; £9,000

£1,900

£9,900

£2,880

3kW

£10,000 &#; £12,000

£2,000

£13,000

£4,320

4kW

£12,000 &#; £16,000

£2,000

£16,200

£5,760

The installation process for solar roof tiles could take approximately 1 week. Moreover, integrating solar tiles into your existing roof is not likely feasible at present. Their installation is more suited to new builds or renovations.

Solar roof tiles might not be an available option for everybody but they are still worth considering for those planning to build a new roof.

Advantages of Solar Roof Tiles

Domestic solar technologies have many advantages in general, especially in terms of saving energy and protecting the environment. Below, we have listed the main benefits of solar tiles.

Aesthetically pleasing design. This is likely the most significant advantage of this technology. You won&#;t have to cover your roof with huge solar panels and, therefore, won&#;t disrupt your house style. Moreover, there are different types of tiles to accommodate different roof and tile styles.

Provide clean, free energy. Like solar panels, solar roof tiles are an eco-friendly alternative for powering all your house&#;s electric appliances. They are also eligible for the same government incentives as solar panels (e.g. the Energy Company Obligation Scheme &#; ECO4).

Save on energy bills. Using a solar roof tile system, you can save between 40% and 70% on electricity bills.

Increase your property&#;s market value. An aesthetically pleasing look and the current high demand for green energy combined will increase the value of your property.

Increased resistance and durability. Bolt-on solar panels and solar roof tiles can last decades. However, extreme weather conditions can damage the former. Solar tiles, on the other hand, are as durable as the roof itself, and even hurricane-force winds would not rip them off. In fact, solar slates will protect the roof section they are installed on.

Disadvantages of Solar Roof Tiles

Of course, solar roof tiles have downsides too. Here is an overview of their disadvantages:

High initial costs. The solar slates purchasing cost is much higher than regular roof tiles. They can be twice as expensive as solar panel systems with similar wattage.

Less efficient than bolt-on solar panels. On average, solar tiles&#; efficiency is 10-20%. Most solar panels have an efficiency of at least 16%, sometimes even 22%.

They cannot be installed on an already existing roof. Currently, solar tiles are only suitable for new buildings or those in which all tiles will be replaced. In contrast, traditional solar panels can be installed, uninstalled, and reinstalled at any time.

Not every roof can accommodate them. A roof must be pitched and angled perfectly to be suitable for solar roof tiles. Once again, solar panels are relatively easier to install on &#;difficult&#; roofs.

The Only Solar Shingles Buying Guide You Need

Harnessing the power of solar energy is not only good for the environment, but it&#;s also good for your wallet. While roof panels are what often come to mind, solar shingles are another option for homeowners seeking to add value to their properties.

What Are Solar Shingles?

Solar shingles, or solar roof tiles, are made of slim photovoltaic (PV) sheets that either overlay or replace the existing shingles on a roof. They absorb sunlight and convert it into electricity. By relying on this method of energy as opposed to electricity, for example, homeowners will save money on monthly bills and eventually recoup their initial investments.

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Like regular roof shingles, solar shingles protect your home from the weather and other elements. These shingles are not only energy-efficient, but they also offer a more attractive aesthetic to a home than do the large, bulky panels normally associated with solar-powered energy.

Solar Roof Shingles vs. Solar Roof Panels

Solar shingles work in a similar way to solar panels&#;they both absorb the sun&#;s rays, converting the light to thermal or electrical energy. However, there are a few important differences between solar panels and shingles that you should know about when determining your home&#;s solar energy needs:

Size

Solar shingles are about the same size as traditional roofing shingles, with the average size being about 12 inches wide by 86 inches long, and weighing about 13 pounds per square foot. The thin tiles are less than an inch in thickness. It takes about 350 tiles to complete a typical solar roof installation.

Materials

Solar shingles are typically made from copper indium gallium selenide, which is what allows them to be so flexible and thin. This semiconductor is an ideal material as it results in a high conversion efficiency rate, which is about 10% to 12% on average. Some shingles, instead, use monocrystalline silicon, which is also used to fabricate computer chips. While these are more expensive, they are worth the extra price as they have a higher efficiency rate of around 15% to 20%.

Output

As the primary goal is to lower energy costs, this is a major consideration with solar installation. The majority of shingles will produce anywhere between 13 and 63 watts of power. The number of tiles in a typical home roof installation can lower the utility bill by 40% to 70%; by adding more tiles, you can increase the energy output.

While both solar shingles and solar panels convert the sun&#;s rays into energy, there are a number of differences that will help you decide between the two options:

Appearance

Since solar shingles blend right into the roofing materials, such as concrete or asphalt, many prefer this aesthetic rather than large black panels attached to the roof. In general, solar shingles create a sleeker aesthetic than do bulky solar panels, particularly since only parts of the roof, like the edging, might be covered in shingles to be efficient.

Service Life

Both solar panels and shingles have long life spans, typically upwards of 20 years. However, the longevity of solar shingles varies by the manufacturer and the installation. Warranties also vary; when you purchase solar shingles, be sure that you note the difference between power warranties. Solar shingle warranties can last for a couple of decades based on their production, while durability warranties that cover the shingles themselves can span the lifetime of the home.

Efficiency

Solar shingles are outshined by panels in terms of efficiency for a number of reasons. While solar panels can be adjusted as needed to achieve the best angle to capture the sun&#;s rays, shingles stay in the same place as they were first installed. You can always add more shingles to the roof to harness more energy, but as with all home improvement projects, more materials mean more money.

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Installation

Solar shingles can take as much as a week to install&#;and that&#;s if your existing roof is in good shape. If you are building or redoing your roof before adding solar shingles, it can take even longer. Some solar tile manufacturers, like Tesla, will take two or more weeks to install.
This is in sharp comparison to solar panels, which can be installed within a day.

Durability

Solar shingles have one major advantage to panels: They are more durable. Unlike panels, which sit atop the roof, solar roof tiles are actually part of the roof. As such, they are more resilient and can stand up to harsh weather conditions and fallen debris. Additionally, solar shingles are fire-resistant, a feature that is not inherent in solar panels. (It should be noted, however, that the risk for fire with solar panels is very low.)

Cost

Solar shingles can be on the pricier side depending on how much square footage you need to cover and which types you&#;d like to get. It&#;s important to understand your budget before opting into a solar shingle project.

Solar Shingles Cost

Solar shingles typically cost more than solar panels because of the amount of materials needed for installation. The average price of solar roof tiles ranges from $15,000 to $20,000, but Tesla shingles could cost more than $70,000, along with a lengthy installation period. However, the ultimate cost of solar shingles depends on the size of the roof, the energy needs of your household and the manufacturer and installer of the shingles you have chosen. You can compare this to the cost of solar panels here.

Solar Shingles Cost Per Square Foot

When considering the installation of solar shingles, it&#;s important to understand the costs associated with this innovative roofing solution. Solar shingles not only provide the functionality of traditional roofing materials but also generate electricity, offering long-term savings on energy bills. The price per square foot for solar shingles can vary depending on factors such as the brand, roof pitch and installation complexity. However, the average cost per square foot for solar shingles typically ranges from $21 to $25.

Below is a table that illustrates the average total cost of solar shingles for different roof sizes, based on the average price per square foot:

Pros and Cons of Solar Shingles

Here is a rundown of the advantages and disadvantages of solar shingles for your home:

Pros

Shingles have a sleeker, more attractive aesthetic. They integrate well with concrete and asphalt roofs in particular.
They are weather-resistant and durable.
They are easier to maintain than solar panels.
They are cost-effective if you are building a new roof

Cons

While solar panels have been around for quite a while, solar shingles are young by comparison. Therefore, not every solar manufacturer offers them.
The technology is still evolving as well. Not all existing roofs are conducive to solar shingle installation&#;you might have to rebuild the entire roof.
They are more expensive than solar panels.
They are currently limited in style and colors, though brands like Tesla are introducing new options.

How Many Solar Shingles Do You Need?

To learn how many solar shingles are needed to power a house, you&#;ll use a formula with key factors like the size of your house and your typical energy usage. Since you can integrate solar shingles into your existing roof, the amount of solar shingles you&#;ll need depends on how large your roof is and how much you&#;d like to save on your electricity bill: the more shingles, the more energy output.

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How Long Do Solar Shingles Last?

Solar shingles are designed to offer both durability and efficiency, making them an attractive option for homeowners looking to invest in renewable energy solutions. The lifespan of solar shingles can vary based on the manufacturer, the materials used and the installation quality. Generally, solar shingles have a lifespan ranging from 20 to 30 years. Here are a few more factors that can influence the longevity of your solar shingles:

Material quality:
High-quality materials like monocrystalline silicon can extend the life of solar shingles, offering better efficiency and durability.
Installation:
Proper installation by certified professionals ensures that solar shingles are securely attached and optimally positioned, which can enhance their longevity.
Maintenance:
Regular maintenance, including cleaning and inspections, helps keep solar shingles in good condition and prevents issues that could shorten their lifespan.
Environmental conditions:
Harsh weather conditions, such as heavy snowfall, hail or extreme temperatures, can affect the lifespan of solar shingles. However, most solar shingles are designed to withstand various weather conditions.

Best Solar Shingle Brands

Here are a number of brands that manufacture solar shingles for use in residential installations:

Tesla

This well-known technology brand also manufactures solar shingles. Tesla shingles are made from quartz, which improves their efficiency and resilience. Not only does Tesla create the shingles, but the company also manages every step of the process, from design to installation, which includes removal of the current roof, if applicable. These shingles come in attractive textures, and they come with a 30-year power output warranty. An app allows you to monitor your shingles&#; energy levels at a glance.

CertainTeed

CertainTeed solar shingles are created with the same monocrystalline technology used for solar panels. There are two designs, one that coordinates with concrete tile roofs and another that matches with asphalt.

SunTegra

SunTegra is another option for those looking for a more budget-friendly option in solar roofing. Its simple, lightweight configuration reduces the time it takes to install and integrates well with either asphalt or concrete roofs.

Luma

Luma solar shingles are different from others on the market in terms of their high efficiency (21%) and durability&#;they can withstand Category 5 hurricanes. They are also billed as the only solar shingle that can be upgraded, which is a great feature to have as the technology improves.

Timberline Solar by GAF Energy

Timberline Solar By GAF Energy is meant to make solar simple. The durable solar shingles are water-shedding and designed to withstand up to 130 mph. Timberline Solar is installed similarly to regular roof shingles and nailed directly to the roof.

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Are Solar Shingles Worth It?

The decision to invest in solar shingles depends on several factors, making it a potentially worthwhile option in some scenarios and less so in others. For homeowners prioritizing aesthetics and seeking a seamless integration with their roof, solar shingles offer a visually appealing alternative to traditional solar panels. They may be particularly valuable in areas with abundant sunlight, allowing for significant energy savings and potential increases in property value. However, the higher initial cost compared to traditional roofing materials and solar panels might be a deterrent for some. Additionally, if your roof doesn&#;t receive optimal sunlight or if you plan to move in the near future, the long-term financial benefits may not be as impactful. Assessing your specific energy needs, budget and long-term plans can help determine if solar shingles are the right choice for your home.

Are you interested in learning more about pv roof tiles? Contact us today to secure an expert consultation!

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