Battery storage · Tesla Powerwall partner

Store your solar, cut your bills, keep the lights on.

A solar system with no battery gives its best energy back to the grid for pennies. A battery lets you use the solar YOU made, in the evening, when rates peak, or through a power cut. We install Tesla Powerwall 3, GivEnergy and more across the West Midlands.

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90%+of your solar, used by your home

Why a battery

Solar without storage only solves half the problem.

The problem

On an average UK home, solar makes most of its power at midday, when nobody's home. Without a battery, that energy gets exported to the grid for 5.5p/kWh. But you'll still import your evening electricity at 24p/kWh. That's a 4× gap you're handing to the grid every day.

Our solution

A home battery stores your midday surplus and releases it in the evening. On a typical 5 kWp solar + 10 kWh battery install, customers use 85–95% of the solar they generate, eliminating most of their evening grid import. Many also charge the battery on a cheap overnight tariff and discharge it during peak hours for extra savings.

60→90%

Solar self-use

no battery vs with battery

10kWh

Typical capacity

covers a full evening

10yr

Battery warranty

most manufacturers

£0

Cost of stored energy

after payback

What you get

Everything in a Djuka battery install.

Whether you're retrofitting a battery to an existing solar system or installing both together, every spec is on the quote before you sign.

Your choice of battery

Tesla Powerwall 3 (13.5 kWh · whole-home backup ready), GivEnergy (5–13 kWh modular), SolarEdge Energy Bank, or similar. We'll recommend based on your usage pattern and budget.

Hybrid inverter integration

If you have an existing solar system, we'll check inverter compatibility. If not, we install a hybrid inverter that orchestrates panels + battery + grid seamlessly.

Backup power (optional)

Whole-home backup on Powerwall 3, or essential-circuits backup on GivEnergy. Keep lights, fridge, Wi-Fi and heating controls running through a cut.

Off-peak tariff charging

Wire the battery to charge overnight on cheap tariffs (Octopus Go, Intelligent, etc.) and discharge at peak. Pays for itself faster than solar-only storage.

Monitoring app

Live view of battery state, charge/discharge, solar generation, home usage and grid import/export. Set rules (e.g. 'always keep 20% in reserve for outages').

Full electrical certification

NAPIT-certified install, DNO notification, building-regs sign-off. Certificate pack in your inbox within a week of commissioning.

Qualified · Certified · Trusted

The accreditations, partnerships & clients that back every install

We only install what we’d put on our own homes — and every badge you see here represents a standard independent bodies have audited us against.

Industry accreditations

Products we install

Trusted by

Local Schools
Retirement Homes
Effective Home

Why Djuka

Why homeowners trust us with their battery install.

NAPIT electricians

Battery installs touch your consumer unit, meter tails and DNO notifications. We're qualified electricians first, we understand every wire we touch.

Tesla Powerwall installers

Confirmed from our customer reviews (David Clarke, Octavius Ceasar). We've installed Powerwall 3 units with custom cable routing to match existing EV chargers.

Real aftercare

Multiple customers have called us more than a year post-install with questions. We always pick up. Jerry on Trustpilot: "even helped with advice more than a year after install."

Fast on-site response

Based in Redditch, we can typically be on your roof within 2 weeks of the survey. No four-month national waiting lists.

Featured install

A real install. Real numbers.

David Clarke

West Midlands · August 2025

Solar + Tesla Powerwall 3

The challenge

David wanted energy independence and asked for his solar + battery cables to follow the exact route of his existing EV charger wiring, a custom ask most installers won't accommodate.

The solution

4.5 kWp rooftop solar array
Tesla Powerwall 3 (13.5 kWh)
Custom cable routing to match existing EV charger
Smart hybrid inverter with monitoring app

System performance

System size: 4.5 kWp
Battery: 13.5 kWh Tesla Powerwall 3
Year 1 saving: £1,200
Lifetime saving: £42,000
Bill reduction: 75%
Payback: 6.2 yrs

“Top quality install of solar and the Tesla Powerwall 3. We are over the moon with how it turned out, they asked me how I would want the cables run and in what location I wanted the battery and did it to a T. A special thanks to Jake and Kai, you did an amazing job, I would recommend them to anyone.”

, David Clarke · Verified on Trustpilot

Real install hardware

Real batteries. Real installs. Real homes.

What home battery storage actually looks like once we've finished. Tesla Powerwall, Fox, EcoFlow and similar, installed clean, labelled, and ready for the app.

How we work

Battery install, step by step.

Usage review

Share your bills, tell us your priorities.

Do you want maximum savings? Power-cut backup? Off-peak charging? We size the battery to YOUR usage pattern, not a generic one, a 5 kWh unit can be plenty for a 2-bed, or nowhere near enough for a family of 5 with an EV.

Survey & spec

Fixed-price proposal within 48 hours.

On-site check of your inverter, tails, consumer unit and preferred battery location. Fixed-price quote covers the battery, integration work, DNO paperwork and commissioning.

Install & set up

Usually a single-day job.

Battery in, inverter wired, app paired to your phone. We configure your charge/discharge schedule and off-peak tariff logic before we leave. Savings start that evening.

Frequently asked

Battery questions, honestly answered.

Ask us anything

Retrofit-only battery installs (you already have solar): £4,500–£9,000 depending on capacity. Full solar + battery combo: £9,500–£13,500. Exact price depends on the battery size, whether you want whole-home backup, and whether your existing inverter needs upgrading.

No Hidden Costs · Free Quote

Ready to stop exporting your solar for pennies? Let's spec your battery.

Tell us about your home, whether you have solar already or want both installed together. We'll design a system sized to your usage and give you a fixed price within 48 hours.

Get my free quote 07817 967309

We respond within 24 hours · No pushy sales · GDPR compliant