Skip to content
Menu
Offers Finance About Customers Jobs Contact Get a quote Call 0800 091 2136

Battery Storage

Powering a Greener Future with Domestic Battery Storage Solutions from Crystal. With energy prices soaring and concerns about environmental impact increasing, more UK households are looking to save money while reducing their carbon footprint. Crystal Windows offers an ideal solution: domestic battery storage systems!

ECS-01
Overview

About Crystal® Battery Storage

Save Money by Charging During Off-Peak Hours

Our battery storage systems are designed to help you make the most of off-peak, low-cost energy. By charging your batteries overnight—when electricity is often at its cheapest—you’ll save considerably compared to using electricity at peak hours during the day. The energy stored can then be used throughout the day, effectively “locking in” lower rates and protecting you from higher daytime tariffs. This can lead to substantial savings over time, especially as electricity prices remain unpredictable.

Reduce Your Carbon Footprint by Easing Peak Demand

When you use stored energy instead of tapping into the grid during peak times, you’re not only saving money—you’re also helping to reduce the strain on the UK’s energy infrastructure. Currently, when demand spikes, the grid relies on emergency gas power stations to fill the gap. These stations are costly to operate and significantly increase CO₂ emissions. By reducing your dependency on the grid during peak hours, you’re helping to lower the need for these backup stations, directly contributing to a cleaner, greener UK.

Supporting a Stable, Sustainable Grid for Everyone

Battery storage systems play a crucial role in stabilising energy demand. The UK’s grid is under constant pressure, with demand imbalances caused by fluctuating usage. By shifting your energy use to non-peak times, you’re helping reduce this imbalance, which ultimately leads to a more sustainable energy future. Not only does this promote greater stability for everyone, but it also helps create a stronger foundation for renewable energy sources like wind and solar, which depend on grid stability to function optimally.

Why Choose Crystal Windows for Your Battery Storage Needs?

  • Professional installation
    Our expert teams have installed hundreds of domestic systems in homes just like yours.
  • Seamless Integration:
    Our battery systems integrate smoothly into your home’s existing energy setup, providing convenience without disruption.
  • Future-Proof Savings:
    With the energy market constantly changing, you’ll have peace of mind knowing you’re prepared to manage costs.
  • Environmentally Responsible:
    Make a positive impact on the planet and help lead the charge toward a sustainable future.

Invest in a Crystal Windows domestic battery storage system today, and enjoy the immediate benefits of savings, reliability, and a cleaner, greener tomorrow.

Savings calculator

What could a battery add?

Set your annual electricity bill, panels and battery size. Switch the battery off to compare with solar panels alone.

£1800per year
10panels · 4.35 kW
10kWh of storage
5 kWh54 kWh

You can stack up to roughly 41.94 kWh to 54 kWh of battery capacity on a residential Fox ESS system.

Your battery tops up overnight at around 7p per kWh, ready to use in the day instead of full-price electricity. The 7p rate is for illustration only: your actual off-peak rate is set by your energy supplier.

A house with solar panels Solar panels Battery
Illustrative saving off your bill
£909
taken off your £1800 a year electricity bill
Left to pay
£891
per year to your energy supplier, after export payments
Your own power
49%
of the electricity you use, with a battery
We'll send your panels, bill and battery choice to our solar team.
Illustration only, not a quote

Indicative only and not a quote. Our experts give a personalised estimate from your roof, shading and usage. These figures are not a promise of savings: actual savings depend on your roof, shading, how you use energy and future energy prices, and are not guaranteed.

Assumes 435W panels producing 850 kWh a year per kW, electricity at 25p and export at 15p per kWh, and 35% of generation used as it's made. With a smart tariff, the battery is also charged overnight at 7p per kWh. That rate is for illustration only: your actual off-peak rate and hours are set by your energy supplier.

How it works

From enquiry to fitted

  1. 01

    Talk to an expert

    One of our experts discusses your requirements and talks through the options.

  2. 02

    Your fixed quote

    A clear price with no hidden extras, and 'Pay Your Way' finance if you want it.

  3. 03

    Made to measure

    Manufactured to your dimensions in your chosen colour and finish.

  4. 04

    Fitted by our own teams

    Installed, cleaned up and handed over with your 10 Year no quibble guarantee.

'Pay Your Way'

Spread the cost of your new Battery Storage

Spread the cost with our low-interest rate plan at a very competitive rate, or pay a deposit and settle on completion.

See all payment options

Crystal offer a range of finance options subject to status and affordability. Crystal Windows & Doors Limited is a credit broker and not a lender. FRN 652921.

A very competitive rate
Low-interest rate plan
Spread the cost with low monthly payments at a very competitive fixed rate.
From just £93 per month
10.9% APR representative*
More info →
Pay your way
Deposit & settle on completion
Pay a deposit, then settle the balance when the work is complete.
More info →

*Representative example: cash price £9,000, deposit £900, amount of credit £8,100, interest rate 10.9% (fixed p.a.), 10.9% APR representative, duration 171 months (inc. 3 months deferral), 168 monthly payments of £93.28, total amount payable £16,571.04, settlement fee £29.

Keep looking

More energy saving from Crystal®

All energy saving →
  • Trustmark
    Government endorsed quality
  • TGAS
  • My Glazing
    MyGlazing.com
  • HIES consumer code member
  • HICS
  • GGF
    Glass and Glazing Federation member
  • FENSA registered installer
  • SafeContractor approved

Why not get your free quote today and find out just how much you could save!

Get a free quote online
Or call 0800 091 2136 · Mon–Sat 9–5, Sun 10–4

Stay up to date

Get all the latest offers and product updates.

By providing your email address you agree to be contacted under the terms of our Privacy Policy.

Call us Get a free quote