Battery Storage Systems
Store surplus solar energy or charge from cheap overnight tariffs and slash your electricity bills. We only install tier-one battery systems: Tesla Powerwall 3, Alpha ESS, and SigenEnergy — premium equipment with 10-year warranties. Self-consumption rates over 80%, plus whole-home backup protection.
80%+
solar self-consumption
£400–600
average annual saving
10yr
battery warranty
NICEIC Approved
Electrical Safety
Tesla Certified
Powerwall Installer
RECC Member
Consumer Code
5-Star Reviews
Google Verified
Why Add Battery Storage?
Without a battery, a typical solar household uses only 30-40% of the electricity its panels generate. The rest is exported to the grid for a few pence per kilowatt hour, while you then buy electricity back at full price in the evening. A home battery changes this equation entirely — storing your surplus solar energy during the day and releasing it when you need it most.
Store Solar for Evening Use
Your solar panels generate most electricity during the middle of the day when you may be at work. A battery stores this energy and releases it from 4pm onwards when household demand peaks — cooking, heating water, running appliances, and charging devices.
Charge From Cheap Tariffs
Even without solar panels, a battery can save you hundreds annually. Charge overnight on tariffs like Octopus Go (7.5p/kWh) and discharge during peak hours (24.5p/kWh). This tariff arbitrage — buying cheap and avoiding expensive — can save £500–700 per year on a 10kWh daily cycle.
Backup Power Protection
Many battery systems — including Tesla Powerwall — offer backup power capability. During a grid outage, your battery automatically switches to backup mode, keeping essential circuits running until power is restored.
Increase Self-Consumption to 80%+
Adding battery storage to a solar system typically increases self-consumption from 30-40% to over 80%. This means you use the vast majority of the electricity your panels generate rather than exporting it at a fraction of the retail price.
Smart Tariff Arbitrage — The Numbers
A home battery lets you buy electricity when it is cheap and avoid buying it when it is expensive. With Octopus Go, the off-peak rate is 7.5p/kWh (midnight–5am). The standard Ofgem price cap rate is 24.5p/kWh. Charging 10kWh overnight and discharging it during peak hours saves around £1.70 per day — over £600 per year.
| Scenario | Rate | 10kWh daily cost | Annual saving vs peak |
|---|---|---|---|
| Buy at peak (no battery) | 24.5p/kWh | £2.45 | — |
| Octopus Go off-peak charging | 7.5p/kWh | £0.75 | ~£620/year |
| Solar surplus (no export) | 0p/kWh | £0 | ~£895/year |
Based on Ofgem April 2026 price cap (24.5p/kWh) and Octopus Go overnight rate (7.5p/kWh, midnight–5am). Actual savings depend on battery capacity, usage patterns, and tariff availability.
Battery Systems We Install
Alpha ESS triple-stack installation — West Yorkshire
15.3kWh capacityWe install a carefully curated range of battery systems from manufacturers with proven reliability and comprehensive warranty coverage. Every battery we fit is covered by 0% VAT for domestic installations.
We only install tier-one battery systems with proven UK track records. No budget brands, no second-tier equipment.
| Feature | Tesla Powerwall 3 | Alpha ESS Smile 5 | SigenEnergy SigenStor |
|---|---|---|---|
| Usable Capacity | 13.5 kWh | 5.7–11.4 kWh | 5.12–10.24 kWh |
| Continuous Power | 11.5 kW | 5 kW | 5 kW |
| Hybrid Inverter | Built-in (no extra needed) | Built-in hybrid | Built-in hybrid |
| Backup Power | Yes — whole-home backup | Yes — EPS backup mode | Yes — backup mode |
| Warranty | 10 years (Tesla UK) | 10 years | 10 years |
| Round-trip Efficiency | 97.5% | 95%+ | 95%+ |
| Smart Tariff Support | Tesla app + Octopus | Alpha app + scheduling | Sigen app + scheduling |
| VAT (domestic) | 0% | 0% | 0% |
| Installed from | £8,500 | £5,500 | £5,200 |
| Best for | Maximum power & Tesla integration | Compact homes, flexible sizing | Excellent value, modular growth |
Tesla Powerwall 3
- 13.5kWh — powers a typical home through the evening and overnight
- Built-in hybrid inverter — no separate string inverter needed
- Whole-home backup during outages via Tesla Gateway
- Tesla app — real-time monitoring and Storm Watch
Alpha ESS Smile 5
- Smile 5 series — compact all-in-one with hybrid inverter
- Stackable batteries — expand from 5.7kWh as your needs grow
- EPS backup mode — keeps essential circuits running during outages
- 10-year warranty with strong UK support network
Sigenergy SigenStor
- SigenStor — modular from 5.12kWh with clean wall-mount design
- Integrated hybrid inverter — compatible with all major solar panels
- Smart backup — seamless switch to off-grid during grid failures
- Excellent value — comparable performance at a lower upfront cost
How Battery Storage Works
A home battery sits between your solar panels (or grid connection) and your home's electrical circuits. It intelligently manages energy flow to maximise your savings throughout the day.
During the Day
Your solar panels generate electricity. Your home uses what it needs immediately — running appliances, hot water, and lighting. Any surplus energy flows into the battery rather than being exported to the grid. Once the battery is full, any remaining surplus is exported and you earn from the Smart Export Guarantee.
Evening and Overnight
As the sun sets and solar generation drops, your battery takes over. It discharges stored energy to power your home through the evening peak — the most expensive time to buy electricity from the grid. If configured for smart tariff integration, the battery can then charge from cheap overnight electricity (as low as 7p/kWh) ready for the next day.
Pair battery storage with solar panels for maximum savings, or add an EV charger to charge your vehicle from stored solar energy. Explore the Tesla Powerwall 3 — our most popular battery system. Installation available across Yorkshire including Leeds, Wakefield, York, Harrogate, Sheffield, Bradford, and more. See all service areas below.
Areas We Cover for Battery Storage Systems
29 locations across Yorkshire and Greater Manchester
What Our Customers Say
From filling in the questionnaire to having solar panels on my roof took just days. James was responsive, professional, and the installation was spotless. Already seeing savings on my electricity bill.
Nicole T.
Brilliant service from start to finish. The team were professional, tidy, and really knew their stuff. Our solar and battery system is performing even better than quoted.
Neil
James designed a system perfectly sized for our 4-bed detached. The whole process from survey to switch-on was straightforward and hassle-free. Generating well and already reducing our bills significantly.
Mark D.
Frequently Asked Questions
A home battery stores electricity for use later — either solar energy generated during the day or cheap off-peak electricity from the grid. This means you can use stored energy in the evening when electricity rates are highest, significantly reducing your bills. Popular systems include Tesla Powerwall 3 and GivEnergy.
Home battery storage systems typically cost between £3,000 and £10,000 depending on capacity and brand. A Tesla Powerwall 3 (13.5kWh) is at the premium end, while smaller 5-10kWh systems from GivEnergy offer more affordable options. All domestic battery installations currently benefit from 0% VAT.
Yes, retrofitting a battery to an existing solar system is one of our most common installations. The battery connects to your existing inverter (or we can install a hybrid inverter if needed) and begins storing surplus solar energy that would otherwise be exported to the grid for minimal return.
The Tesla Powerwall 3 is Tesla's latest home battery system. It stores 13.5kWh of energy, includes a built-in hybrid inverter, and manages both solar generation and battery storage in a single wall-mounted unit. It integrates with the Tesla app for real-time monitoring and control. As Tesla Certified Installers, we are authorised to supply, install, and commission the Powerwall 3.
No. Standalone batteries can save you money even without solar panels by charging from cheap overnight electricity tariffs (like Octopus Go at around 7-10p/kWh) and discharging during expensive peak hours (24-30p/kWh). This tariff arbitrage can save £400–600 per year depending on your usage.
Related Guides & Articles
View allHome Battery Degradation: How Long Does a Battery Storage System Last?
Home Battery Storage in Winter: What to Expect
Stacking SEG and Smart Tariffs with Battery Storage: The Full Guide
Tesla Powerwall 3 vs GivEnergy: Which Battery Storage System Is Right for You?
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