MCS Certified Battery Installers

Home Battery Storage in Kent

Store the energy your solar panels generate and use it when you need it most. Reduce your reliance on the grid, cut bills further, and keep essential appliances running during power cuts.

MCS Certified
Quality Assured
10 Year Warranty
On Battery Systems
Up to 70%
Self-Sufficiency
Home battery storage system installed by Sun Key Energy in Kent
70%
Average Self-Sufficiency
10yr
Battery Warranty
24/7
Energy Available
0p
Grid Cost at Peak Times

Why Add Battery Storage?

Make the most of every unit of solar energy you generate

Maximise Solar Use

Without storage, surplus solar energy is exported to the grid for a small payment. A battery lets you use that energy yourself — at full value.

Use Energy at Peak Times

Charge your battery during the day and draw from it in the evening when grid electricity is most expensive.

Power Cut Protection

Keep essential appliances running during grid outages. Ideal for homes with medical equipment or those in rural areas.

Cut Bills Further

Combining solar with battery storage can reduce your energy bills by significantly more than solar alone.

Greener Home

Use more of your own clean energy and less from the grid, reducing your carbon footprint even further.

Future-Proof

As energy prices rise, your stored solar energy becomes even more valuable. Battery storage is a long-term investment.

Leading Battery Systems We Install

We work with the most trusted battery brands on the market

SiGENERGY

5kWh – 25kWh

Next-generation modular storage with sleek design and advanced energy management.

SolaX

3.3kWh – 17.4kWh

Proven hybrid inverter and battery system with excellent app monitoring and reliability.

Dyness

4.8kWh – 19.2kWh

High-performance lithium iron phosphate batteries built for safety and longevity.

Solis

5kWh – 20kWh

Reliable, cost-effective hybrid inverter and storage solution.

Growatt

2.56kWh – 15.36kWh

Flexible and scalable — suitable for a wide range of homes.

Pylontech

3.5kWh – 14kWh

Modular lithium batteries compatible with most inverters.

Not sure which system is right for you? We'll recommend the best option for your home and budget during your free survey.

How It Works

From enquiry to a fully charged battery in four simple steps

01

Free Quote

Tell us about your home, solar setup, and energy usage. We design the right system for you.

02

System Design

We select the best battery and inverter combination to maximise your savings.

03

Installation

Our certified team installs your battery system cleanly and efficiently, typically in half a day.

04

Start Storing

Your battery begins charging from your solar panels immediately. Monitor everything via the app.

"Sonny did two pieces of work for me — firstly an EV charger, and after impressing me with the tidiness of the install and quality of service, I asked him back for a solar and battery install. He was flexible, communicative, tidy, and reliable, and all elements of the system work perfectly. I'm a Chartered engineer with a long background in energy, and his competence and honesty was appreciated."
TP
Verified Customer
Trustpilot — Solar, Battery & EV

Common Questions

Do I need solar panels to have a battery?

No — a battery can be installed without solar panels and charged from the grid overnight on a cheap tariff (such as Octopus Go), then used during peak hours. However, pairing with solar gives the greatest savings.

How much does a home battery cost?

Battery systems typically range from £3,000–£8,000 depending on capacity and brand. We provide a detailed quote after assessing your energy usage and existing setup.

How long does installation take?

Most battery installations are completed in half a day to a full day, depending on the system and whether it is being added to an existing solar setup.

Can a battery keep my home running during a power cut?

Yes — many modern battery systems include backup functionality that automatically switches your home to battery power during a grid outage, keeping essential circuits running.

Can I add a battery to my existing solar panels?

In most cases, yes. We assess your existing inverter and panels to recommend the most compatible and cost-effective battery solution.

Pair With Our Other Services

Solar Panels

Generate your own clean energy to charge your battery.

Learn More

EV Chargers

Charge your electric vehicle from your solar and battery system.

Learn More

Electrician Services

Full electrical work to support your renewable energy setup.

Learn More

Ready to Store Your Own Energy?

Get a free, no-obligation battery storage quote today. We cover the whole of Kent and will design a system tailored to your home and energy goals.

MCS Certified
10 Year Warranty
Free Home Survey
No Obligation