The use of solar panels in new homes

Energy prices in the UK have surged over the past few years and the push for greener, more efficient housing has never been stronger. More developers are offering solar panels as standard on new builds and some buyers are wondering if this is a must-have feature or just a nice-to-have upgrade.

If you’re buying a new build home or working with a developer to design one, you might be asking: are solar panels worth it? Let’s look at the benefits, drawbacks and key considerations for homeowners.

Here are some reasons why solar panels are becoming a common feature in UK new builds:

• High energy costs: The UK has some of the highest domestic electricity prices in Europe, so generating your own energy can mean serious savings.
• Government incentives: The Smart Export Guarantee (SEG) allows homeowners to sell unused solar electricity back to the grid, providing an extra source of income.
• Net Zero goals: The UK aims to be net zero by 2050 and tighter building regulations are pushing developers toward renewable energy solutions.
• Eco-conscious buyers: Many UK homeowners actively want to reduce their carbon footprint and future-proof their property.

Solar panels on UK new build homes are a smart investment, cutting bills, earning income, boosting property value and helping homeowners create a greener future.

What are the benefits of solar panels on UK new builds?

1. Lower electricity bills

Generating your own solar energy means buying less electricity from your supplier. According to the Energy Saving Trust, a typical 4kWp solar PV system can save between £210 and £500 per year on electricity bills. This depends on where you live in the UK and how much electricity you use during the day.

2. Earn money from surplus energy

Thanks to the Smart Export Guarantee, energy suppliers pay you for any electricity you export back to the grid. Rates vary, but some suppliers pay over 15p per kWh, which can add up over the year and shorten your payback period.

3. Reduce your carbon footprint

A typical solar panel system can cut a home’s carbon emissions by up to one tonne per year, helping you do your part for the planet.

4. Increase property value

Homes with solar panels are increasingly attractive to buyers. Homes with high EPC ratings (Energy Performance Certificates) sell for a premium and solar panels contribute to a better rating.

5. Better roof integration

6. Protection from future price hikes

UK energy prices are volatile. Producing your own power shields you from some of that risk and makes your household costs more predictable.


 
 


What are the cons of solar panels on UK new builds?

1. Upfront cost

Even though installation costs are falling, a typical 4kWp solar panel system costs around £5,000 to £7,000 in the UK. Some developers include it in the purchase price, which may mean a higher mortgage.

2. Payback period

Depending on your energy usage, location, and SEG rate, it can take 8 to 12 years to recover the cost of the system through savings and export payments.

3. Dependence on daylight

Solar panels work best during long summer days. In the UK, output is significantly lower in winter months, though still enough to make a difference to annual bills.

4. Battery costs for maximum benefit

If you want to store energy to use at night, you’ll need a solar battery, which can cost £3,000 to £6,000. While not essential, batteries help you make the most of your system.

5. Aesthetic preferences

Some buyers simply don’t like the look of solar panels. Even with modern designs, this is still a consideration.

Things UK buyers should ask

If you’re purchasing a new build with solar panels included, here are some important questions:

• System size: How many kWp will the panels generate per year?
• Ownership: Will you own the panels outright or are they on a lease?
• Warranties: What warranty is offered on the panels and inverter?
• Export tariff: Can you choose your own Smart Export Guarantee provider once you move in?
• Battery readiness: Is the system compatible with adding a battery in the future?

Are there different types of solar panel?

The two most popular solar panel types are Monocrystalline and Polycrystalline

Monocrystalline panels are the most popular type of solar panels within the UK. They offer a balance of excellent efficiency, pleasing aesthetics and have a long life span.

Made from a single, pure crystal of silicon. The silicon is cut into wafers, forming panels that convert sunlight to electricity. They offer better performance in low light, which is perfect for the unpredictable British weather.

Whilst initially more expensive, monocrystalline panels are the go to for those looking for maximum efficiency.

Polycrystalline panels are a more affordable option compared to Monocrystalline panels. They are made from multiple silicon fragments melted together, creating a distinctive speckled blue appearance.

As the panels themselves are slightly less effective than Monocrystalline, you will require more panels to achieve the same result.


 
 


The future of solar in new builds

Solar energy is set to become a standard feature rather than an optional extra. The Future Homes Standard, will require new homes to produce 75 to 80% fewer carbon emissions compared to current standards. Which means more developers will install solar panels as part of meeting these targets.

At the same time, costs are falling and technology is improving. Integrated solar roofs, home batteries and smart energy management systems are making solar homes more efficient and less visually intrusive.

Conclusion

For most UK new build homeowners, solar panels are a sound long-term investment. They reduce your bills, pay you for excess energy and add value to your property. Yes, the upfront cost and payback period can feel daunting, but as energy prices rise and government policy continues to push toward net zero, solar panels will only become more attractive.

If you’re buying a new home, asking the right questions and taking advantage of government schemes like the Smart Export Guarantee can make solar panels one of the smartest decisions you make for your home.