As more UK homeowners look for ways to reduce energy bills and become less reliant on the grid, solar batteries are quickly becoming a popular upgrade. When paired with solar panels, they allow you to store electricity for later use — which is especially valuable during the evenings or power outages. But how do they work, what do they cost, and are they really worth the investment? Let’s break it down.
What do solar batteries do for your home?
Store your energy for when you actually need it
A standard solar setup sends unused energy straight back to the grid, often when you’re not even home to benefit from it. With solar battery storage, you can capture that excess energy and use it later — in the evening when usage is highest, or even during a blackout. This means you’re making the most out of your panels, improving efficiency and cutting even more from your bills. For many homes in the UK, this can bring grid usage down to just 20–30%.
Add energy independence and backup protection
One of the biggest benefits of solar batteries for home setups is the security they offer. If there’s a power cut, you’re still able to run critical appliances thanks to the stored energy in your battery. New World Energy installs high-performance batteries, including products from SigEnergy, designed for modern UK homes with flexible storage options and smart energy controls. Their smart solar batteries work seamlessly with your solar panels and inverters to offer smooth and automatic backup when needed.
Work with or without grid export schemes
Even if you’re on a Smart Export Guarantee tariff, sending electricity back to the grid won’t give you the same value as using it yourself. Battery systems give you flexibility. They allow you to store energy when prices are low or solar is abundant, and use it when rates are high — making the whole system work harder for you. Whether you’re new to solar or looking to upgrade, solar batteries UK installations like those offered by New World Energy can help maximise your system’s full potential.
How much do solar batteries cost in 2025?
Understand the full cost — not just the battery
The price of solar batteries for solar panels varies depending on size, brand, and how advanced the system is. In the UK, a good-quality lithium-ion battery typically costs between £3,000 and £6,000, including installation. While that might seem steep at first, it’s important to consider the full setup: battery size (in kWh), performance, and how well it integrates with your existing or planned system. SigEnergy batteries, installed by New World Energy, are designed with long-term performance in mind, using intelligent charging systems to maximise storage.
Think in terms of payback — not just purchase
Many people ask: Are solar batteries worth it in the UK? The answer depends on how you use electricity and how much you want to reduce your bills. If you use most of your electricity in the evening, battery storage will help you avoid peak-time rates. Over time, this leads to serious savings, especially with rising electricity prices. In fact, some customers find their system pays for itself within 7–10 years — even faster if you have home solar arrays already producing more energy than you can use during the day.
Grants and VAT-free installations help cut costs
| Support Option | Details | Benefit Level |
|---|---|---|
| 0% VAT on Solar Panels | Applies to all UK domestic installations until 2027. | High |
| 0% VAT on Solar Batteries | Applies when installed alongside panels as part of a renewable setup. | High |
| National Grants for Batteries | None currently available as of 2025. | Low |
| Local Incentives | Offered by some councils or energy providers for storage systems. | Medium |
| New World Energy Advice | Tailored guidance on batteries, budgets, and usage patterns. | High |
Which battery is right for your home?
Size and type matters
There’s no one-size-fits-all when it comes to solar batteries for home. If you live in a small property and only use electricity for lighting and appliances, a 5kWh battery might be enough. Larger homes or those with electric heating, car chargers or pools may need 10kWh or more. Most modern setups now use lithium solar batteries, which last longer, charge faster, and take up less space than older lead-acid types.
Look for integrated smart features
Choosing a smart solar battery gives you access to real-time monitoring, remote management, and smarter charging cycles. Products like those from SigEnergy, installed by New World Energy, use AI-driven software to learn your habits and optimise how energy is stored and used. You’ll see better performance and faster savings, with minimal input required from you.
Plan your installation with professionals
Proper installation is key — a poorly sized or incorrectly set up battery won’t deliver results. That’s why working with a trusted installer like New World Energy is crucial. As certified SigEnergy partners, they handle everything from design and sizing to commissioning and post-installation support. Whether you’re installing batteries with a new solar array or retrofitting to an existing system, their team ensures it works smoothly, safely, and efficiently.
Is Solar Right for You?
Solar power remains one of the smartest long-term investments for UK homeowners. Whether you’re aiming to cut your energy bills, gain more independence from the grid, or increase the appeal of your property, a well-designed solar setup can deliver real value.
With the added benefits of VAT relief, smart export payments, and battery storage options, the case for solar is stronger than ever. If you’re considering upgrading your home with solar technology, our team is here to help.
Contact Us
New World Energy
Smart solar and battery storage installations across the UK.
Email: info@new-worldenergy.co.uk
Phone: 01865 600016
Website: www.new-worldenergy.co.uk
Ready to explore your options? Get in touch today and we’ll help you find the right solution for your home.
