Are Solar Batteries Getting Cheaper?

Thinking about adding a battery to your solar setup? This guide breaks down whether solar batteries are getting cheaper in the UK, what affects pricing, and how to decide if it’s the right time to invest.

Are batteries getting cheaper?

Yes, prices are slowly improving.

Over the past five years, the average cost of a solar battery in the UK has gradually decreased. As more homes adopt home solar setups with battery storage, production has scaled up and prices have followed. While not yet “cheap,” batteries are now more affordable and accessible than ever.

VAT relief helps reduce overall cost

In the UK, there’s 0% VAT on residential solar batteries when installed with a solar system. This makes full installations more attractive for homeowners looking to cut their bills and become more energy independent using a modern solar system setup.

Upfront cost vs long-term savings

Even if the upfront cost still ranges between £3,000–£6,000, the long-term savings and flexibility often outweigh it — especially if you use a lot of energy in the evenings. When paired with smart energy management, solar battery storage can lead to faster return on investment.

What affects the cost of solar batteries?

Size and storage capacity

The larger the battery (in kWh), the more it costs. A small 5kWh unit might cost £3,000, while a high-capacity 13kWh system with smart features can cost £6,000+. Your installer can help size it based on your energy usage.

Battery type matters

Lithium solar batteries are the most common for UK homes — they’re efficient, compact, and durable. While cheaper alternatives exist, they’re often bulkier and don’t last as long, making lithium the better investment.

Installation and system integration

Costs vary based on how complex the install is. New World Energy ensures all home solar batteries are integrated properly with your inverter, monitoring system, and any future upgrades like EV chargers or heat pumps.

Whether it’s part of a new system or retrofit

Installing a battery with a new solar system is generally cheaper than adding it later. However, many modern smart solar batteries can still be added to existing setups. Our team can advise on which route is best based on your home and goals.

Thinking About Adding a Solar Battery?

Solar battery prices are getting more competitive — and now may be the right time to invest. Whether you’re upgrading an existing solar system or planning a new one, New World Energy can help you choose the right battery solution for your home.

We’ll guide you through the latest pricing, battery types, and smart storage options to suit your energy usage and budget. As approved installers of Sigenergy products, we make sure your system is future-ready and fully optimised.