Home / Blogs

How Much Do Solar Panels Save on Electricity Bills in the UK?

Proximus Solutions

Free Consultation

We assess your home & energy usage

Proximus Solutions

Tailored Systems

Tailored to your goals and property

Proximus Solutions

Expert Installation

MCS Certified installation by our experts

Proximus Solutions

Start Saving

Lower bills and more energy independence

Proximus Solutions

Ongoing Support

We are here for you, Every steps of the way

As the Ofgem price cap climbs to record highs in 2026‚ it is perhaps not surprising that UK residents are interested in knowing “how much do solar panels save on electricity bills in the UK?”․ This is one of the most common questions among homeowners looking to take back control of their energy costs.

Most households in the UK can save between £700 and £1300 a year with home solar panels․ With a battery‚ it could be as much as 94%․ The savings you get will depend on how many panels you install‚ how much energy you use‚ which direction your roof faces and whether you have a battery to store energy.

Key takeaways

(Estimates below are drawn from current UK industry data and are meant as a general guide — your actual savings will depend on your specific system, roof, a

The average UK household spends an estimated £73–£87 a month on electricity without solar energy for household, based on the April 2026 price cap.
With solar energy panels UK and battery system, that monthly bill can fall to as little as £5, an estimated saving of around 94% on average.
A typical 4kW solar-only system (no battery) is estimated to save most homes £700–£1,100 a year.
Adding a battery is estimated to boost self-consumption from around 30% to 80–85%, which can significantly increase your annual savings.
Payback periods currently range from roughly 6 to 12 years, with sunnier regions like the South West typically seeing faster returns.

What's the average UK electricity bill, with and without solar?

Ofgem has estimated average UK electricity consumption to be 2700 kWh per year‚ which would require payment of £73 per month at the April 2026 electricity price cap․ Using the UK government’s slightly higher usage estimate of 3,400 kWh, that rises to about £87 a month.

Once solar panels and a battery are added, industry data suggests the average household saves around 94% on that bill — bringing monthly costs down to single figures.

Estimated monthly bill (no solar)	Estimated monthly bill (with solar + battery)	Estimated monthly saving
~£73	~£4	~£69
~£87	~£5	~£82
~£120	~£7	~£113

How much do solar energy panels save per year?

Annual savings vary depending on system size and household setup, and different sources model this slightly differently but the estimates below give a broadly consistent picture across current UK data:

Solar panels only (no battery): A typical 4kW system is estimated to save most homes £700–£1,100 a year, based on current energy prices of around 26p per kWh.
Solar with battery storage: Adding a battery can push estimated total savings to £1,000–£1,300+ a year, since it lets you use far more of the power your panels generate instead of exporting it cheaply.
New-build homes: One study of modern, well-insulated properties estimated solar-only savings of over £1,000 a year on a typical semi-detached new build, rising by roughly £300 a year once a solar panel battery is added.

Over a 25-year system lifespan, these annual savings compound significantly and could reach well into five figures once you account for rising energy prices over time.

Why does battery storage makes such a big difference?

This is one of the most important and most overlooked factors in housing solar savings. Without a battery, most UK homes only use around 30–50% of the electricity their panels generate, because peak generation happens in the middle of the day when many households are out at work or school. The rest gets exported to the grid, typically for a fraction of what you’d pay to buy it back later.

Add a battery, and that self-consumption rate jumps to 70–85%. Instead of selling cheap daytime power and buying expensive evening power, you store your own electricity and use it when you actually need it during the evening peak, or overnight.

Because export tariffs (via the Smart Export Guarantee) typically pay just 3p–17.5p per kWh, while grid electricity costs upwards of 25p per kWh, storing your own power is almost always more valuable than selling it.

Smart Export Guarantee: earnings on top of saving

Any surplus electricity you don’t use, or store can be sold back to the grid through the Smart Export Guarantee (SEG). Rates vary by supplier, generally ranging from around 3p to over 17p per kWh. While SEG income is a welcome bonus and can add meaningfully to your total return it’s usually secondary to self-consumption, since the price gap between buying and selling electricity is so wide.

How does location and season affect your savings?

Solar savings aren’t flat across the year or across the country.

Summer vs winter: Solar output is heavily weighted toward summer, with roughly a third or more of annual generation happening in the sunniest months, compared to around a tenth in winter. Expect your bills to be lowest sometimes close to zero in summer, and higher in winter when you rely more on grid electricity.
Roof orientation: South-facing roofs pitched at 30–40 degrees generate the most electricity. East- and west-facing roofs still perform well, typically covering a large share of daytime usage. North-facing roofs can still be worthwhile, though output tends to drop to roughly 60% of a south-facing equivalent.
Region: Southern and south-western England Devon and Cornwall in particular receive more sunlight hours than the rest of the UK, which shortens payback periods and boosts overall lifetime savings compared with northern regions.

How house type affects your solar savings

Your property type matters too, mainly because it dictates how much roof space and therefore how large a system you can fit. Savings for a terraced home with a modest roof are still substantial, but they scale up considerably for larger detached properties with more expansive roof space, since a bigger roof supports a more powerful array.

As a general estimate, here’s how system size (and therefore typical savings potential) tends to vary by property type:

Property type	Indicative system size	Estimated annual saving potential
Flat / apartment	1–2kW (where possible)	Lower — often limited by shared roof access
Mid/end-terrace	2–3kW	~£400–£700
Semi-detached	3.5–4.5kW	~£700–£1,100
Detached	5–6kW+	~£1,000–£1,500+
Bungalow	4–6kW	~£800–£1,300

These figures are broad, industry-typical estimates based on average roof capacity per property type not fixed outcomes. Two identical house types can have very different savings depending on roof orientation, shading, and how the system is sized to household usage. A site survey is the only way to get an accurate figure for a specific home.

Flats and terraced houses aren’t ruled out of solar, but smaller or shared roofs generally mean a smaller system and correspondingly smaller savings. Detached homes and bungalows, with more uninterrupted roof space, are typically able to support larger arrays and, in many cases, a battery large enough to capture most of what they generate which is why they often see the highest savings in cash terms.

How to maximize your solar savings

Run high-load appliances in daylight hours. Dishwashers, washing machines, and EV charging cost far less when powered directly by your panels rather than the grid.
Add a battery if your budget allows. It’s the single biggest lever for increasing self-consumption and overall savings.
Size your system to your usage. An undersized system won’t cover your needs; an oversized one exports too much at low SEG rates.
Shop around for import/export tariffs. The gap between the cheapest and most expensive tariffs can significantly change your annual savings.
Keep your roof clear of shading. Trees, chimneys, and nearby buildings can meaningfully cut output if not accounted for at the design stage.

The bottom line

Solar panels UK remain one of the most reliable ways for homeowners to cut their electricity bills, with estimated typical savings of £700–£1,300 a year and monthly bills that can fall to single figures once a battery is added. These figures are averages drawn from current UK industry data, and the exact number for your home will depend on your roof, usage habits, region, and system design so while national estimates are a useful starting point, a personalized quote based on your own property will always give you the most accurate picture.

Ready to see what your own home could save? Proximus Solutions as a UK-wide, MCS-certified solar panel installer offering fully managed solar and battery installations from survey to sign-off. Get your free quote and find out your personalized savings potential.

Frequently Asked Questions

How much do solar panels save on electricity bills per month in the UK?

Most households save somewhere between £58 and £110 a month, depending on system size, usage, and whether they have a battery. Homes with a well-sized solar-and-battery system can see bills fall to as little as £4–£7 a month.

Do I need a battery to save money with solar panels?

No — solar panels alone will still cut your bills substantially, typically by 60–70%. But without storage, most homes only use 30–50% of the power they generate. A battery can push that to 70–85%, which is why the majority of new UK solar power installation are now fitted with one.

Can solar panels bring my electricity bill to zero?

It’s possible, particularly with a correctly sized battery system and a good export tariff. Some households even end up in profit once export income is factored in, though this depends on system size, usage patterns, and tariff choices.

Is solar still worth it in 2026 with high energy prices?

Yes — arguably more so than ever. As grid electricity prices have risen, the value of every unit of electricity you generate yourself has increased too, which shortens payback periods and increases long-term savings.

Do solar panels still save money on a north-facing roof?

Yes, though output is typically around 60% of what a south-facing roof would generate. It’s still often worth it, especially with rising energy prices, but a professional site survey is the best way to know for sure.