Battery storage
Buy energy when it is cheap. Use it when it is not.
A home battery stores electricity, from the roof or from cheap overnight tariff windows, and releases it during expensive peak hours. It is the single component that makes everything else in the home work harder.
- Member discount
- Up to 15%
- Typical install
- 1 day
How battery storage work, in plain English
No jargon and no assumed knowledge. This is the explanation to share with your people when they ask what they are actually buying.
- 1
It fills up when power is cheap
Electricity is cheaper overnight on a time-of-use tariff. The battery charges quietly in that window, whether or not the home has solar panels.
- 2
It soaks up spare solar
If there are panels, daytime surplus that would otherwise be sold cheaply goes into the battery instead.
- 3
It powers the evening
Between roughly four and eight in the evening, households use the most electricity and pay the most for it. The battery covers that period from energy bought or generated earlier.
- 4
Nobody has to manage it
The system decides when to charge and discharge on its own. The household sees it in an app and otherwise carries on as normal.
What's included
A wall or floor mounted lithium battery sized to the household's real consumption pattern.
A hybrid inverter that coordinates solar generation, storage and grid import.
Automatic charging during off-peak tariff windows, even in homes without solar.
Optional backup circuits so essential sockets stay live during a power cut.
What it changes in an employee's home
Peak pricing stops biting
Evening peak is when households use the most power and pay the most for it. A battery covers that window from cheap stored energy.
Solar stops being wasted
Without storage, most daytime generation is exported for a fraction of its value. With storage, it powers the evening.
Works without a roof array
Even on its own, a battery charging on an off-peak rate reduces the average price the household pays per unit.
Is your home suitable?
Storage suits more homes than solar does, because it does not need a roof. It needs somewhere dry to sit and a household with a decent evening electricity load.
Usually a good fit
- You own the property, or you have the owner's written consent.
- A garage, utility room, loft or plant space with a spare wall or floor area.
- A meaningful evening electricity use, or an electric car, or both.
- Interest in a time-of-use tariff, which is what makes the savings work.
Needs a closer look
- Rented flats where nothing can be fixed to a wall. Plug-in solar is the alternative.
- Homes with no suitable space away from living areas.
- Very low electricity users, where the saving may not justify the outlay. The quote will show this honestly.
Cost and payback
Indicative figures for a typical UK three-bedroom home. Every employee sees exact numbers on their own live online quote.
- Typical upfront cost
- From £3,000 before the member discount
- Member discount
- Up to 15% off
- Typical annual saving
- £300 to £600 a year
- Rough payback
- Around 6 to 10 years
- Install time
- About 1 day
- Works with solar
- Yes, or entirely on its own
The saving depends on the size of the battery, the tariff and how much electricity the household uses in the evening. A battery on a time-of-use tariff saves money even with no panels on the roof.
Free for employers. Nothing to fund, nothing for payroll to run
One short agreement opens battery storage to your whole workforce. We handle every employee question, quote and install from there. See how it works for employers.
Bring battery storage to your team.
Tell us a little about your organisation and we'll come back with the employee-facing detail, or book a demo and we'll walk you through the walled garden.
New to the scheme? Read how it works for employers.
Delivered by Net Zero Benefits, alongside The Electric Car Scheme, the UK's largest independent salary sacrifice provider.
Other categories
See the scheme end to end in 20 minutes.
A live walkthrough with the team who built it.
- The employee experience, from sign up to install.
- Exactly what the discounts look like across each product.
- What you would need to launch it: no payroll changes, no budget.
- Your questions, answered by a person who knows the answer.
Not ready for a call? and we'll send the employer pack.
Battery storage questions your people will ask
If something here is not covered, ask it on the demo and we will answer it straight.
Do I need solar panels to have a battery?
No. A battery on its own still saves money by charging during cheap overnight hours and powering the home through expensive evening ones. Solar simply gives it a second, free source to fill up from.
How long does a home battery last?
Typically 10 to 15 years of daily cycling, and the manufacturer's warranty covers a guaranteed capacity over a set number of years. That warranty is included in the quote.
Will it power my house in a blackout?
It can, if backup circuits are fitted. Those keep essentials like the fridge, lights and broadband running. It is an option on the quote rather than something every install includes.
Where does the battery go?
Usually a garage, utility room, loft or an outside wall in a weather-rated enclosure. It is roughly the size of a small radiator or a tall cupboard, depending on capacity.
Is it safe inside a home?
Yes. Certified home batteries have multiple layers of protection built in, are installed to UK standards by accredited electricians, and are sited away from living and sleeping areas.
What size battery do I need?
It is sized to the household's actual consumption pattern rather than sold as a package. Oversizing wastes money and undersizing leaves savings on the table, so the design starts from the real numbers.
Does a battery need maintenance?
No routine maintenance. Firmware updates arrive automatically and the app flags anything that needs attention.