How do solar and insulation combined solutions increase energy efficiency?
A well-insulated home stays comfortable all year round and uses less energy. Solar panels can then supply the energy you need. Any extra electricity can be stored for later use with a solar battery. This means you use less energy from the grid and reduce your carbon footprint.
Average installation time:
2-5 days
The cost to install Solar and insulation combined solutions can vary and is based on a few factors:
The size of your home.
The size of your solar panels.
Whether it’s a new build or existing home.
The size, quality and lifespan of your solar battery.
Here’s an idea of how much it would cost to pair different insulation types with solar panels and a battery:
Loft insulation with solar: £7,400 - £21,100.
Cavity wall insulation with solar: £8,000 - £22,200.
Underfloor insulation with solar: £10,000 - £24,000.
Room-in-roof insulation with solar: £7,950 - £22,300.
Internal wall insulation with solar: £14,000 - £27,000.
External wall insulation with solar: £19,000 - £33,000.
(Based on July 2024 costs)
Are solar and insulation combined solutions right for my house?
Solar and insulation can be a great choice for homes that want to use less energy and save money. Solar panels work best if your roof faces south, west, or east and if you have enough space for them.
Insulation helps keep your home cosy and reduces the energy you need. It’s also important to choose the right type of insulation for your home. Our friendly advisors can help you figure out the best solution and connect you with accredited suppliers who can get it installed.
Approximate cost saving:
How much you can save will depend on:
The size of your home.
The system you’re replacing.
The type of insulation you choose.
Here’s an idea of how much a four-bedroom detached home could save each year with:
Room-in-roof insulation, solar panels and a battery: £1,020.
Solid wall insulation, solar panels and a battery: £1,060.
Floor insulation, solar panels and a battery: £660.
(Energy Saving Trust. Based on July 2024 prices).
Energy efficiency:
Using insulation with solar panels and a solar battery is a great way to make your home more energy-efficient.
For a small detached house, using loft insulation with solar panels and a battery can save 1,400 kg of CO2 a year. That’s the same as watching TV for 70,000 hours!
(Energy Saving Trust. Based on insulating a gas-heated home, 2024 fuel prices).
FAQ's - Solar and Insulation Combined
Using solar with insulation is a smart way to save. Insulation keeps your home cosy, so your solar panels don’t have to work as hard. Extra energy can be stored in a solar battery for cloudy days, or sold back to the grid. This makes solar power and insulation a cost-efficient way to power your home.
If you live in York, you can get a government grant to help pay for solar and insulation. Our advisers can help you find the best solution for your home. They can also connect you with suppliers to get it installed.
Why combine solar and insulation?
Free virtual plan builder
Use our free Virtual Plan Builder to get ideas about energy efficiency, products, and associated costs.
Get a government grant to help pay for solar and insulation.
Lower your bills and save money.
Earn money from surplus solar energy.
How do solar and insulation work together?
Solar panels turn sunlight into electricity and a battery stores this for later use. This means you can rely less on energy from the grid on cloudy days, saving you money.
Insulation is like a cosy blanket for your house. It keeps it warm and comfortable without needing to use much energy. When you do need energy, your solar panels and battery offer a more sustainable alternative.
There are a few insulation options to choose from:
Insulation type | What it does | Best for homes |
Loft insulation | Reduces heating loss in loft | With lots of loft space |
Room-in-roof insulation | Improves comfort in loft | With a converted loft |
Cavity wall insulation | Improves comfort throughout home | With limited inside space |
Internal wall insulation | Improves comfort throughout home | With lots of inside space |
External wall insulation | Improves comfort throughout home | With external wall access |
Underfloor insulation | Reduces heat loss through floors | With exposed or drafty floors |
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What do solar and insulation combined solutions look like and where does it fit in your house?
Solar panels are flat and come in dark blue or black. They’re made from materials like silicon, glass, and aluminium. Each panel is about one and a half metres long and one metre wide.
A south-facing roof is the best spot for solar panels, but they can also work on west or east-facing roofs. A three-bedroom, semi-detached home will need around ten panels on the roof. There will be some wires to connect them to your home’s electricity and battery.
Solar batteries are small and compact boxes. They are roughly the size of a standard fridge freezer.
Insulation is usually less noticeable than solar panels and a battery. Here’s an idea of what it looks like and where it goes:
Insulation type | What does it look like? | Where does it go? |
Loft insulation | A soft and fluffy blanket | Between wooden beams in the loft |
Room-in-roof insulation | Can be soft and fluffy or solid | Between wooden beams and hard to reach corners of the loft |
Cavity wall insulation | A fluffy material or tiny beads | Fits between walls |
Internal wall insulation | Flat and rectangular panels | On inside walls |
External wall insulation | Solid insulating panels covered with weather proofed finish such as a render made from wood, or plastic. | On outside walls |
Underfloor insulation | Can be soft and fluffy like wool, or hard and firm. | Hidden under floor |
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More information
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My home is now a much more sustainable, quieter, comfortable space where I can relax without worrying about my energy costs.
Debbie, city centre
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