Do I need solar to install a battery?

No. Batteries can charge from off-peak tariffs like Octopus Go and discharge at peak rates, reducing the annual electricity bill on grid-only homes.

How long do batteries last?

Modern LFP batteries carry 10 to 12 year warranties. Expect 15 to 20 year service life in normal use.

Will it run my whole house in a power cut?

Only with whole-home backup configured at install. Most installs are grid-tied without backup.

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batteries

Battery storage

Store cheap overnight electricity or your own solar power, and run your evenings off it instead of peak-rate grid energy. Fox ESS, Sigenergy and Tesla Powerwall 3, installed properly.

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Gas Safe registered
MCS accredited
Family-run since 2019

Latest install

Solar PV and EV charging, designed in. Sharp Heating, Hertford.

Fixed price. Full warranty. No surprises.

0% VAT On solar and battery storage

Until March 2027, solar PV and battery storage are zero-rated for VAT. That saves up to £2,000 on a typical home install compared with the standard 20% rate.

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Hi, I'm Volt!

Store off-peak electricity and use it when prices peak. Pair with solar or run grid-only on a smart tariff. Fox ESS, Sigenergy and Tesla Powerwall installations.

Sharp Renewables, part of Sharp Heating, installs battery storage for UK homes. MCS certified. Grant paperwork handled. Quotes fixed before any work starts.

Sharp Renewables, part of Sharp Heating, installs battery storage across Hertfordshire, Essex and North London. We are MCS certified and handle the grant paperwork on your behalf.

Fox ESS and Tesla Powerwall installations. Pair with solar or store off-peak electricity for evening use.

What's included as standard

Pairs with solar or grid-only
10 to 12 year warranty
Cloud monitoring included

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Considered manufacturers we lead with

Fox ESS

Serious capacity at the best price per kWh

Warranty: 10 years
Efficiency: EP12: 11.52 kWh LFP, expandable to 46 kWh
Installed price band: £4,200 to £9,500

Best for: Serious capacity at the best price per kWh, with room to grow

•11.52 kWh per unit, stack up to four
•IP65: wall or floor, indoors or out
•10-year warranty

Common concerns, answered honestly

Our process

How it works

1
Free survey
We visit your home to check your system, your property and your needs.
2
System design
Our engineers design the right system. Properly sized, future proofed.
3
Fixed quotation
You get a detailed fixed-price quote in plain English.
4
Installation
A clean, tidy, accredited install completed to the quoted date and price.
5
Handover and ongoing support
We show you the controls, register your warranty and book annual service.

Fixed pricing, clearly stated.

No-obligation surveys. No day rates. No mid-install surprises.

Battery storage from £4,200 battery-only retrofit, exact model confirmed at survey

battery-only retrofit, exact model confirmed at survey

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What our customers say

Battery retrofit

Existing solar with a new Sigenergy battery on Octopus Go. Bills have collapsed, app is excellent.

Quietly excellent from start to finish

Tom and his team installed a Viessmann Vitodens 200-W in our kitchen extension. They treated the boiler position as part of the design conversation, ran the pipework where it would never be seen, and left the kitchen cleaner than they found it. Considered work from start to finish.

Heat pump install that looks like part of the architecture

Sharp Renewables installed our Vaillant aroTHERM Plus last year. The plinth they specified, the louvred cladding, the planting around it - the unit looks intended, not bolted on. The system itself runs beautifully through winter.

Did exactly what they said they would do

Quoted a fixed price for a Worcester 8000 Style, turned up when they said they would, finished when they said they would, charged exactly what they said they would. No hidden anything. The team is genuinely professional.

Solar and battery, installed properly

Fox ESS 11.5 kWh battery paired with a 6 kW solar system, all run on neat trunking, app working perfectly. The cabling is tidier than the electrics that were already in the loft. Professional throughout.

Bathroom refit, finished to a high standard

A complete bathroom strip-out and rebuild. The plumbing under the floor is a piece of work in itself, and the finish on the visible elements - Hansgrohe valves, tiling, vanity unit - is exactly what we wanted.

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Solar estimate in 2 minutes online. Surveys within 48 hours.

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