Battery Storage Systems in Sheffield & Yorkshire

Adding battery storage to your home is the single most effective way to take complete control of your energy bills. Whether you are looking to retrofit a battery to your existing solar panels or install a standalone system to exploit cheap off-peak electricity, Seven Hills Solar provides expert, independent installation across Sheffield and Yorkshire. We don’t rely on guesswork; our team digitally models your real-world energy usage to specify the perfect system—whether that is a premium Tesla Powerwall 3, a modular Sigenergy setup, or a cost-effective Fox ESS system. Fully integrated with smart, variable tariffs like Octopus Energy, our bespoke battery installations ensure you maximize your solar self-consumption, store cheap overnight power, and protect your home against grid outages.

Home Battery Storage FAQs

What do home batteries do?

Home batteries store excess solar energy generated during the day so you can power your home at night, maximizing your self-consumption. Additionally, smart batteries can charge from the grid during cheap off-peak hours, allowing you to run your property on low-cost stored energy when peak grid electricity is most expensive.

Best Value Battery System: Fox ESS

The Fox ESS inverter and battery system offers an exceptional entry point, with installations starting from £2,500.

Flexible Design: Available as large, sleek, wall-mounted units (like the EP12) or smaller, modular stackable units (like the EQ4800).
Backup Options: Fox also offers a whole-home backup system called the EPS-Box, ensuring your solar and battery storage remain operational during a power cut.

Best Battery for Vehicle-to-Grid (V2G) & Three-Phase Backup: Sigenergy

The SigenStor by Sigenergy is a highly innovative, modular, "5-in-1" stackable system. Installations from £3,500

Three-Phase Power: Uniquely, when paired with the Sigenergy backup gateway, it can provide full backup power across all three phases of a property.
Customisable: Inverter sizes range from 3–12 kW (single-phase) up to 5–30 kW (three-phase), making it perfect for large homes and properties with high EV charging demands, or
V2G integration: Sigenergy offer a DC charging module that fits on their battery stack. This allows you to connect a compatible car with a CCS charging cable. Your car can then power your house or even discharge to the grid when export prices are the highest. Check if you car is compatible here (remember to select the United Kingdom in the drop down)
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Premium Battery Storage: Tesla Powerwall 3

Starting from £7,000 installed, the Tesla Powerwall 3 delivers a massive 13.5 kWh of usable storage and a whopping 11 kW of continuous charge/discharge power.

Integrated Solar Inverter: Powerwall 3 features a built-in solar inverter with 3 MPPTs (Maximum Power Point Trackers). This allows it to handle complex roof layouts, partial shading, and up to three different roof orientations without needing a separate solar inverter.
Tried and Tested Tech: Tesla pioneered the mass-market residential battery. The Powerwall 3 draws on years of real-world global data, utilizing advanced thermal management technology derived from Tesla's electric vehicles to allow for robust indoor or outdoor installation.
DNO Friendly: This massive power output can be electronically throttled down if required by your local District Network Operator (DNO), making grid approvals much easier.

Most Sustainable Battery Option: Eleven Energy (Sodium-Ion)

Eleven Energy battery Installations from £3,500.

If you want to move away from Lithium-based chemistries, sodium-ion batteries offer a highly sustainable alternative made from earth-abundant materials. We supply and fit Eleven Energy batteries, which are robust, safe, and competitively priced. While they are slightly bulkier than lithium competitors and require a manual changeover switch for power-cut backup, they represent the cutting edge of eco-friendly energy storage.

Is battery storage worth it?

It depends on your energy usage profile. In some cases, it makes more financial sense to export excess solar energy back to the grid under smart export guarantees rather than storing it.

Generally, properties with medium-to-high energy usage benefit the most from batteries, especially when paired with a variable, time-of-use electricity tariff like Octopus Go (which offer highly discounted night rates). We can model your property’s energy profile to compare solar installations with and without batteries to see exactly what makes sense for you.

How much does a home battery system cost?

Typical residential battery installations cost between £2,500 and £9,000. The total price depends on several key factors:

Storage Capacity (kWh): This dictates how much energy the battery can hold. Interestingly, larger capacity batteries often offer a lower cost per kWh.
Power Output (kW): This determines how quickly the battery can charge and discharge (the speed at which it can dump power into your home). Residential battery inverters typically range from 2 kW to 11 kW.
Backup Functionality: Advanced systems can back up your entire home automatically during grid outages and allow your solar panels to keep generation active to top up the battery.
Brand: Premium brands offer superior UK-based customer support, intuitive monitoring apps, long warranties, and seamless integration with smart tariffs.

How much VAT do I pay on a home battery?

Currently, home battery storage systems qualify for 0% VAT until 2027. This zero-rate applies whether the battery is installed alongside a new solar array or retrofitted to an existing solar panel system.

Do batteries work off-grid or during a power cut?

Yes, but it depends on the system you choose. Some battery storage systems include emergency backup capabilities that keep your home running seamlessly during a power outage. All of the batteries we offer have either full and automatic home back-up (Fox ESS, Tesla Powerwall), full, automatic three phase back-up (Sigenergy) or whole home back-up with a manual change over switch (Eleven Energy)

Is it worth fitting a battery without solar panels?

Yes, "standalone" grid-tied batteries are becoming incredibly popular. You can charge any of the systems we install using cheap overnight electricity tariffs and discharge that cheap power during the day.

For example, if you use a smart tariff like Octopus Go (approx. 8.5p per kWh off-peak vs. 26p per kWh day rate), you save 17.5p per kWh.

For example: If you fully cycle a 13.5 kWh battery once a day: 17.5p savings x 13.5 kWh capacity x 365 days x 0.9 (accounting for 90% round-trip efficiency losses) = £776 savings per year.

Assuming energy prices remain stable, the battery can pay for itself in roughly 9 to 10 years.

Things to consider:

Solar Synergy: If your roof space allows it, combining a battery with solar panels will almost always deliver a faster and higher return on investment.
Base Load: Ensure your home actually uses at least 13.5 kWh of electricity per day to maximize these returns.
Future Energy Prices: If standard daytime electricity rates rise, your annual savings will increase, speeding up your payback period.

Why choose Seven Hills Solar for your battery installation?

Our experience with residential battery storage spans a decade of continuous installation, testing, and support across Sheffield and the UK. We don’t just install batteries; we understand how different brands perform in the real world over the long term. As an independent installer, we offer unbiased advice to help you compare the best options for your specific budget and energy goals.