Energy bills across the UK have climbed sharply over the last few years, and more people are looking for ways to take back control. Solar panels are a popular choice, but pairing them with a battery system is where things get really interesting.
Over 30% of newly installed solar systems in the UK now include battery storage, up from just 10% five years ago, according to MCS data. That shift tells you something.
Here, we will look at how the two technologies work together, what you could save, how to get started, and what to think about before you spend any money.
How Do Solar Panels and Battery Storage Work Together?
Solar panels are fitted to your roof and use daylight to make electricity for your home. During the day, your home uses that electricity as it is made.
If your panels make more than you need at that moment, the extra power goes somewhere. Without a battery, it gets sent back to the grid, and you earn very little for it.
A battery changes that. Instead of losing that extra power, the battery holds onto it so you can use it later.
Here is how the process works:
- Your panels make electricity during the day
- Your home uses what it needs right away
- Anything left over charges the battery
- In the evening, the battery powers your home instead of the grid
Batteries store the electricity generated by solar panels during the day so you can use it later. You can also take advantage of smart time-of-use tariffs and charge your battery from the grid.
That means even on cloudy days or through winter months, you are still getting value from the system. The battery fills up when power is cheap or free, and gives it back to you when it matters most.
Most modern battery systems are easy to keep track of through a phone app. You can see exactly how much power your home is making, storing, and using at any time. Glow Electric installs solar panel systems and smart home energy systems designed to work together seamlessly, so you get the most out of every unit of electricity your roof produces.
What Are the Benefits of Combining Solar Panels With Battery Storage?
Solar panels on their own are a good start. But adding a battery to the mix is where solar panels and battery storage in the UK really start to make a difference. You stop wasting the power you make, and you rely far less on the grid.
With the integration of battery storage, UK households can now increase their solar self-consumption from an average of 20 to 30% to well over 70%, especially with a typical 6kWh battery. That is a big jump, and it has a direct impact on your energy bills.
Here are the main benefits:
- Use more of what you generate. The electricity your panels make stays in your home rather than being sold back to the grid for very little.
- Lower energy bills. You pull less power from the grid, especially during the expensive evening and morning hours.
- Protection from power cuts. Many battery systems can keep key parts of your home running even when the grid goes down.
- Charge on cheaper rates. Some batteries can fill up overnight when electricity from the grid costs less, and release that power during peak hours.
- Better for the environment. You use more clean, renewable energy and less fossil fuel power from the grid.
The Energy Saving Trust advises that solar batteries are most worthwhile for homes with higher evening energy use, where panels alone cannot cover demand. For most families in Northern Ireland, that is most evenings of the week.
Glow Electric can help you understand how your usage patterns match up with what a combined system could do for your home, including advice on our general electrical works and energy upgrades.
How Much Could You Save on Energy Bills in Northern Ireland?
Energy bills in Northern Ireland have gone up sharply over recent years, and many families are looking for a real way to bring those costs down. Solar panels and battery storage in the UK offer one of the most practical answers.
According to the UK Government, families could save around £500 a year on their energy bills by installing rooftop solar panels as part of the government's rooftop solar plan. Add a battery to that, and the savings go further still.
For Northern Ireland homes, the numbers stack up well:
- A typical home uses around 3,500 kWh of electricity per year
- A well-sized solar and battery setup can cover a large share of that demand
- Spring and summer months give the biggest returns, but the battery keeps things working year-round
- Battery systems can top up from the grid overnight at lower rates, so you rarely pay peak prices
For small businesses, the savings tend to be even bigger. Businesses use a lot of power during the day, which lines up well with when solar panels are generating the most.
The battery then stores what is left for the rest of the day. It is a good fit for shops, small offices, and tradespeople operating from commercial premises.
Every home and business is different, so the exact savings depend on how much electricity you use, the size of your system, and your current tariff. The best way to get a real picture is to speak to a qualified installer who can look at your actual usage.
See our solar panel installations for more on what Glow Electric offers, and explore our case studies to see how other customers across Northern Ireland have cut their bills.
What Does Installation Involve?
Getting solar panels and battery storage fitted is a straightforward process when carried out by a qualified electrician. It typically takes one to two days, depending on the size of the system and the layout of your property.
Here is what to expect:
- A surveyor visits to check your roof, your wiring, and how much electricity you use
- The solar panels are mounted on your roof at the best angle to catch daylight
- The battery unit is installed in a sheltered spot such as a garage or utility room
- Everything is wired back to your consumer unit, which manages how power moves around your home
- The whole system is tested and signed off on before the installer leaves
Under UK Building Regulations Part P, electrical work in homes must be done by a qualified professional. All solar and battery installations must also meet BS 7671 Wiring Regulations, which cover protection against electric shock, fire, and overloading.
Installation must be done by a qualified electrician who understands UK standards and safety requirements. All components must comply with UK wiring regulations, and your installer should clearly label the system to ensure safety for future work or inspections.
You may also need an Electrical Installation Condition Report, known as an EICR, to confirm your existing wiring is safe and ready for a new system. Glow Electric handles electrical certification as part of the full installation process, so you do not need to arrange this separately.
If your fuse board also needs upgrading, our team provides consumer unit replacements to make sure your home is fully up to standard before anything new goes in.
Are There Any UK Grants or Schemes Available?
There is currently no specific government grant for solar panels in Northern Ireland for most homeowners, but there are still good financial reasons to go ahead.
The main incentives available are:
- 0% VAT on installation. Since April 2022, solar panel installations for residential properties in Northern Ireland have 0% VAT. This applies to panels, battery storage, and installation costs, saving you approximately £500 to £800 on a typical installation.
- Smart Export Guarantee (SEG). This lets you earn money by selling any surplus electricity your system generates back to the grid. Rates vary by supplier, but it gives you a return on power you would otherwise give away for nothing.
- Renewables Obligation Certificate (ROC) payments. In Northern Ireland, homeowners with solar can sign up for ROC payments as an alternative export income stream.
The UK Government's Warm Homes Plan is also worth watching. It sets out billions in funding for home energy upgrades, with some of that ring-fenced for Scotland, Wales, and Northern Ireland. Exact details for Northern Ireland are still being confirmed, but low-income households in particular may benefit as the scheme develops.
There are also business-focused incentives through the NI Sustainable Energy Programme, which can cover up to 20% of installation costs for eligible organisations. The key point is that the financial case for solar panels and battery storage in the UK is strong right now, especially with 0% VAT still in place until March 2027.
A qualified installer can talk you through which incentives apply to your specific situation. Our full range of electrical services includes tailored advice on costs, savings, and what you could be eligible for.
Can You Charge an EV Using Solar Energy?
Yes, and it is one of the smartest ways to use the power your solar panels produce. If you have an electric car, a combined solar and battery system means you can charge it using electricity you have generated yourself, often at no extra cost.
A smart EV charger works by detecting when your solar panels are making more power than your home needs. Instead of sending that surplus to the grid, it routes it to your car. Your car charges from the panels first, then from the battery, and only draws from the grid if neither can cover it.
The benefits of pairing solar panels and battery storage with EV charging in the UK are clear:
- You charge your car using free, clean energy rather than paying grid rates
- A smart charger can be set only to charge when solar surplus is available
- Any leftover energy can go back to the grid through the Smart Export Guarantee
- Home charging is far cheaper than using public charge points
A household with solar panels, an EV, and a smart tariff can realistically save £1,200 to £1,800 per year in total on energy costs, from reduced grid imports, export income, and cheap overnight charging. UK Solar Calculator
The Office for Zero Emission Vehicles (OZEV) provides guidance on EV charging options and current support schemes, which are worth checking before you commit to a charger.
Glow Electric installs both home EV charging points and commercial EV charging points, and can advise on how to connect everything together for the best results.
Is Solar Battery Storage Right for Your Property?
Most homes and businesses in Northern Ireland are a good match for solar panels and battery storage in the UK. However, there are a few things worth checking before you go ahead.
Your roof
Your roof does not need to be perfect, but it should be in reasonable condition. South-facing roofs give the best results, but east or west-facing roofs still work well. Flat roofs can also be fitted with angled brackets. Your installer will check your roof as part of the survey.
Your energy usage
The Energy Saving Trust advises that solar batteries are most financially beneficial for homes with higher evening energy usage, where solar panels alone cannot cover demand. If you use a lot of power in the evenings, have an electric car, or heat your home with an electric system, the payback period will likely be shorter. Switchtogether
Your fuse board
Older consumer units may not be compatible with modern solar inverters or battery systems. If yours needs upgrading, that can be done as part of the same job. Glow Electric provides consumer unit replacements alongside full solar and battery installs, so your home is safe and ready from the start.
How long will it take to pay back?
A 2025 analysis by energy tech firm Loop found the average payback period for a combined solar and battery installation was around seven years, based on current energy prices and 0% VAT. With rising energy costs, that figure could improve over time.
Our smart systems service helps you understand how solar, battery storage, EV charging, and smart heating can work together for your property, so you are not paying for more than you need.
Cut Your Energy Bills With Help From Glow Electric
Solar panels and battery storage work best when they are set up properly and sized to your home. The savings are real, the technology is reliable, and the benefits only grow when you add an EV charger or smart heating on top. Thousands of homes and businesses across the UK are already making the switch, and Northern Ireland is no different.
Glow Electric installs solar panels, battery storage, EV chargers, consumer units, and smart systems to the highest standards. Every job is fully certified and compliant with UK wiring regulations, so you can have full confidence in what is installed. If you are not sure where to start, that is fine too. Get in touch with Glow Electric today, and we will talk you through your options honestly, with no pressure.