Is an Air Source Heat Pump expensive to run?

A properly sized and correctly installed Air Source Heat Pump is incredibly cost-effective to run. In fact, it stands out as the most economical heating system when compared to other electric or fossil fuel alternatives. A well-installed Air Source system can generate approximately 4kWh of heat for every 1kWh of electricity it consumes. By dividing the cost of 1kWh of electricity by 4, you can calculate the running cost of the system. Here’s an interesting fact that often goes unnoticed: 100% of the heat energy produced by the Heat Pump is delivered to your property, whereas traditional boilers can lose up to 20% of their heat energy through the flue with the exhaust gases.

How many Solar Panels do I need?

The number of panels needed varies from person to person and property to property. It primarily depends on the size of the area you have available, such as your roof space. Another crucial factor is how much energy you use and when you need it. It’s not as straightforward as saying, “I use 10,000 kWh per year, so just fit a system to meet that.” Keep in mind that panels generate less energy during winter, which might coincide with when you use the most energy. To determine your requirements accurately, take a closer look at your appliances and when you use them. Do you have additional electricity-intensive devices like an electric car or hot tub? Building your solar system around your specific energy needs and considering your lifestyle adjustments can help you maximize the benefits of Solar PV.

How does home battery storage installation work?

Home battery storage installation involves integrating a battery system with your existing energy setup, allowing you to store excess energy for use during peak times.

How Much Do Solar Panels and Batteries Really Cost in the UK?

Installing solar panels is one of the most effective ways to cut your electricity bills and protect your home from rising energy prices. But what’s the real cost in 2025?
At Sustain Heating, we design and install bespoke solar PV systems across the South West, helping homeowners understand the full picture – from pricing to long-term savings.

Typical Solar PV & Battery Costs (2025 Guide)

System Type	Typical Cost Range	Typical Output	Ideal For
Solar Panels Only	£4,000 – £6,000	3–4 kWp	Small to medium homes
Solar + Battery Storage	£8,000 – £12,000	4–6 kWp + 5–10 kWh battery	Homes wanting energy storage or EV charging

Figures include equipment, inverter, mounting, labour, and VAT (0% rate until 2027). Costs vary with roof size, layout, and component choice.

What Affects the Cost of Solar Panels?

System Size – Larger systems produce more electricity but require more panels and roof space.
Battery Storage Capacity – Bigger batteries provide more independence from the grid, but cost more upfront.
Panel Quality & Efficiency – Premium, high-efficiency panels generate more power per square metre and have longer warranties.
Installation Complexity – Roof angles, multiple elevations, or shaded areas may add to labour time.
Installer Accreditation – Only MCS-accredited installers can register your system for SEG payments and warranties.

Government Incentives & Support

0% VAT on Solar Installations

Domestic solar PV and battery systems currently qualify for zero VAT until March 2027, saving homeowners up to £1,000 on installation costs.

Smart Export Guarantee (SEG)

Earn money for the electricity your system exports to the National Grid.

Rates typically range between 10–20 p/kWh, depending on the energy provider.
You must use an MCS-accredited installer to be eligible.

Combined, these incentives can make solar installation significantly more affordable while reducing payback time.

Realistic Savings & Return on Investment

Home Type	System Size	Annual Bill Saving	SEG Income (Est.)	Payback Period
3-bed semi	4 kWp	£500–£650	£100–£150	7–9 years
4-bed detached	5 kWp + battery	£800–£1,000	£150–£200	8–10 years

Savings depend on how much electricity you use during the day, your tariff, and whether you have battery storage — but in every case, solar offers excellent long-term value.

Value Beyond the Price Tag

Lower Electricity Bills: Use your own energy instead of buying from the grid.
Energy Independence: Pair panels with a battery for 24/7 clean power.
Increased Home Value: Homes with solar often sell faster and at higher prices.
Sustainability: Reduce your carbon footprint by up to one tonne per year with a 4 kWp system.

Final Thoughts

Solar panels and batteries aren’t just an investment in your property – they’re an investment in energy security and sustainability.
With 0% VAT and SEG payments available, there’s never been a better time to make the switch.