How Solar and Battery Storage Can Help Reduce Your Energy Bills
Across the UK, households are turning to solar energy to cut rising electricity bills and the savings are adding up fast. According to new analysis from Gryd Energy, Brits saved an incredible £471 million on energy bills over the past year by generating their own clean power from rooftop solar.
Solar is saving households hundreds every year
More than 1.6 million UK homes now have rooftop solar systems, producing around 30–40% of their annual energy demand directly from the sun. For homeowners with battery storage, the benefits are even greater stored energy can be used in the evenings or on cloudy days, increasing self-consumption to as much as 60–80% of total household demand.
That means households with solar and battery storage are not only buying less electricity from the grid but can also earn from export tariffs by selling excess power back to their supplier. For the average home, that’s around £700–£800 in annual savings and with energy prices remaining unpredictable, those savings provide real long-term stability.
Why new homes should include solar and storage
Despite these clear benefits, many new homes are still being built without integrated solar or battery systems. Gryd’s analysis suggests that homeowners in these properties are missing out on up to £780 per year in potential energy bill savings.
The good news is that change is coming. The UK Government’s Future Homes Standard, due in 2027, will make rooftop solar mandatory on new-build homes. This move will accelerate the transition to clean, affordable energy and give homeowners greater control over how they power their properties.
At Knight & Day Solar Installations, we believe there’s no reason to wait until 2027. Our team is already helping homeowners across South London including SE21, SE22 and SE23 to future-proof their homes with high-quality solar PV and battery systems that start saving money from day one.
How battery storage makes the difference
Adding a battery storage system alongside your solar panels can double the value of your investment. Instead of exporting surplus power to the grid during the day, your battery stores it for later use typically in the evening when you need it most.
This means you’re using your own renewable electricity instead of buying expensive peak-rate energy from your supplier. Over time, the combination of solar generation and intelligent battery management can significantly reduce your reliance on the grid, especially when paired with smart home devices and time-of-use tariffs.
For households with electric vehicles, a battery system can also help balance charging times and further reduce costs by using stored solar energy rather than grid power.
The long-term benefits
Investing in solar PV and battery storage isn’t just about saving money it’s about energy independence and sustainability. Solar power has already reduced an estimated 8.3 million tonnes of CO₂ in the UK, playing a vital role in achieving the nation’s Net Zero targets.
And with domestic solar capacity up by 63% in just five years (from 3.6 GW in 2021 to 5.8 GW in 2025), homeowners are clearly recognising both the financial and environmental value of renewable energy.
At Knight & Day Solar Installations, we design systems that maximise your savings and energy performance. Our expert team handles everything from the initial survey and design through to installation and aftercare ensuring your system delivers the best possible return on investment.
Take control of your energy future
Switching to solar and battery storage is one of the smartest ways to protect your household from rising energy costs. Whether you’re looking to reduce bills, increase your property’s value, or simply make a positive environmental impact, Knight & Day Solar Installations can help.