Battery Storage Systems
Leicester.
Store your excess solar energy and use it when electricity costs the most. SigEnergy and Fox ESS certified installer. Total energy independence.
Solar Panels
Generate your own clean energy and cut bills from day one.
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Battery Storage
Store what you generate. Power your home day and night.
Current Service
EV Chargers
Charge at home overnight for as little as 3p per mile.
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Air Conditioning
Cool in summer, warm in winter — powered by your solar.
ExploreBenefits
WHY BATTERY STORAGE?
Store Excess Solar
Instead of exporting your solar energy cheaply, store it in a battery and use it when you need it most.
Beat Peak Prices
Use stored energy during expensive peak hours (4pm-9pm) when electricity costs the most.
Cheap Night Charging
Charge from the grid at 7p/kWh on overnight tariffs like Octopus Go, then use during the day.
Backup Power
Keep essential appliances running during power cuts with battery backup capability.
80%+ Self-Consumption
Maximise the use of your own solar energy instead of relying on the grid.
Expandable Systems
Start with one battery and add more modules as your needs grow. Fully modular design.
Partners
OUR BATTERY BRANDS
SigEnergy
Premium All-in-One
- -- Modular 5–30kWh — right-sized to your home
- -- Built-in hybrid inverter — no separate unit
- -- Stackable -- expand capacity over time
- -- Integrated EV charging and AI monitoring app
- -- 15-year warranty as standard
Fox ESS
Best-Value Modular Storage
- -- Trusted global inverter and battery maker
- -- Cutting-edge technology
- -- Award-winning products
- -- LiFePO4 chemistry -- safe and long-life
- -- Modular from 5.2kWh -- expandable
Battery Storage With or Without Solar
You don't need solar panels to benefit from a battery storage system. Many of our customers install batteries as a standalone solution, charging from the grid at cheap overnight rates and using stored energy during the day.
Without Solar -- Grid Arbitrage
On tariffs like Octopus Go, you can charge your battery overnight at just 7p/kWh. During the day, when electricity costs 30p+ per kWh, you use your stored energy instead. A typical 10kWh battery could save you £700-900 per year through grid arbitrage alone.
With Solar -- Maximum Savings
Combined with solar panels, a battery system stores your free daytime solar generation for evening use. This can push self-consumption above 80%, dramatically reducing what you buy from the grid and maximising your return on investment. Call us on 0116 497 6782 to discuss your options.
The Energy Concerns Difference
WHY CHOOSE US
MCS Certified
All installations completed to UK's recognised quality standard.
No Subcontractors
Our own qualified team on every job. No middlemen, no excuses.
5-Star Rated
100% 5-star Google reviews from real Leicester homeowners.
5-Year Workmanship
Our workmanship guarantee on top of manufacturer warranties.
0% Finance
Spread the cost with 0% finance over 12 months available.
Local Team
Based in Thorpe Astley. Leicester-born, Leicester-built.
Quick Comparison
SigEnergy vs Fox ESS
| Feature | SigEnergy | Fox ESS |
|---|---|---|
| Origin | Global manufacturer, UK support | Global manufacturer |
| Chemistry | LiFePO4 (safe, long-life) | LiFePO4 (safe, long-life) |
| Capacities | 5–30kWh (modular) | 5.2, 10.4, 16kWh (modular) |
| Warranty | 15 years | 10 years |
| App & monitoring | SigEnergy app — AI-driven | Fox ESS Cloud — comprehensive |
| Blackout protection | Yes (automatic islanding) | Yes (automatic islanding) |
| Octopus/Agile tariff | Yes — fully compatible | Yes — compatible |
| Best for | Premium all-in-one, EV charging | Value-focused, modular expansion |
Related Services
BATTERY STORAGE FAQs
A battery storage system stores excess electricity generated by your solar panels (or charged from the grid at cheap overnight rates) and releases it when you need it most — typically during expensive peak hours between 4pm and 9pm. This maximises your self-consumption and reduces what you buy from the grid.
No. Battery storage works brilliantly even without solar panels. You can charge your battery from the grid at cheap overnight rates (as low as 7p/kWh on tariffs like Octopus Go) and use that stored energy during the day when electricity costs 30p+ per kWh. Many customers save hundreds of pounds a year with battery-only installations.
Most households benefit from a 5-10kWh battery system. A 5kWh battery suits a couple or small family, while a 10kWh system is ideal for larger households with higher evening consumption. Fox ESS and SigEnergy batteries are modular, so you can start with one unit and add more as your needs grow.
SigEnergy and Fox ESS batteries are designed to last 10-15 years with daily cycling. Most come with a 10-15 year warranty, and real-world data shows minimal degradation over this period. The lifespan can be extended by avoiding regular deep discharges.
Learn More
Battery Storage Guides & Local Advice
Battery Storage: What Size Do I Need?
SigEnergy vs Fox ESS, capacity calculator, and realistic savings.
GuideTesla Powerwall 3 vs Sigenergy vs Fox ESS
Head-to-head comparison of the three best home batteries in 2025.
GuideTime-of-Use Tariffs: Octopus Flux & Go
How smart tariffs with battery storage can add £400–£800/year.
BlogHome Battery Storage: East Midlands 2025
SigEnergy & Fox ESS compared for East Midlands homes.
GuideSmart Export Guarantee Rates 2025
Best SEG tariffs and how to maximise export income.
BlogSolar for Rural Properties & Farms
Larger systems, oil-heating pathways, and battery sizing for rural homes.
How it works
Your Energy
Planning Call
No salesman. No home survey. Four simple steps to a fully designed system and an honest quote.
Book your call
Pick a 20-minute slot. Drop a few details so we can prepare your survey before we speak.
Remote survey
We map your roof, shading and energy use using satellite imagery. No driveway visit needed.
Design + instant quote
Live on the call: full system design, savings forecast and an itemised quote. No pressure.
Decide in your own time
You receive your design pack by email. Take it away. Decide when you're ready.
Next step
Book Your Energy
Planning Call
A free 20-minute remote call with a qualified energy consultant. Full system design, savings estimate and an itemised quote — live on the call. No salesman. No home survey.
Available in your area
Battery Storage Systems across the Midlands
MCS-certified battery storage systems installers serving homes and businesses throughout Leicestershire and neighbouring counties.
- Battery in Leicester
- Battery in Loughborough
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Trusted Technology
We Only Use
The Best
Premium brands selected for performance, reliability and longevity — tap any to learn more
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Solar, Battery & EV Services Across the East Midlands
Local Battery Storage Installers Near You — 30 Miles Around Leicester
Searching for a trusted battery storage installer near you? Energy Concerns is a Leicester-based, MCS-certified family business covering everywhere within 30 miles of the city — from LE postcodes on our doorstep out to Nottingham, Derby, Coventry and the wider East Midlands. One local team handles the whole job, from free survey to switch-on, with no call centres and no pushy sales.