Battery Storage near you

PAS 63100:2024, published by BSI in March 2024, is a specification for the protection against fire of battery energy storage systems for use in dwellings. BSI describes it as setting requirements for fire safety in the installation of small-scale domestic systems using stationary secondary batteries, covering areas including battery and fault management and installation locations, with the aim of reducing the risk of a battery becoming a source of ignition and limiting the impact if a fire does occur. It is a paid standard, so what any homeowner can verify directly is that it exists and what it covers, not its clause-by-clause content.

What makes it more than a voluntary document is how BS 7671 now refers to it. The IET's account of Amendment 4:2026 records a new chapter on stationary secondary batteries and states that regulation 570.6.7.203 requires stationary secondary batteries in dwellings to be installed in accordance with PAS 63100, with buildings other than dwellings instead needing a fire safety risk assessment. The IET and BSI published Amendment 4:2026 on 15 April 2026, and the previous version of the standard is withdrawn on 15 October 2026.

There is also a certification scheme route. MCS operates a battery installation standard, MIS 3012, describing the requirements for certified contractors undertaking the supply, design, installation, commissioning and handover of electrical energy storage systems. As with solar, MCS certification is not what makes an installation lawful; it is what makes it verifiable and what links it to the incentive schemes.

Siting is where a domestic battery installation is won or lost, and it is the subject both standards spend their effort on. The IET's summary of the new BS 7671 chapter lists battery location and ventilation alongside design, inverters and protective devices, and PAS 63100's published scope includes installation locations explicitly. The reasoning is straightforward: a lithium-ion cell failure produces heat and gas, so the questions are how much of the building is close to it, whether heat can get away, and what the failure would do to people leaving the house.

That is why a competent installer will be particular about positions most homeowners regard as obvious storage space. A cupboard under the stairs is on the route everyone uses to leave the house. A loft is hot in summer, cold in winter, hard to reach and directly above the bedrooms. A garage or an outbuilding is often the better answer even though it means a longer cable run. Be suspicious of any quotation that treats the location as interchangeable, or that agrees to a position because it is convenient rather than because it satisfies the standard.

Keep the proportion right. The research paper published for the UK government in October 2020 found that few incidents involving domestic battery energy storage systems were known in the public domain and few fires had been recorded, and looked at lithium-ion fires in other applications to fill the evidence gap. Its emphasis was on best practice in design and installation as the mitigation. A battery installed by someone working to PAS 63100 and the current edition of BS 7671, in a position chosen for the standard rather than for convenience, is a considered piece of equipment rather than a hazard parked in your house.

The original case for a battery was to stop exporting cheaply what you would later import expensively - store the middle of the day, use it in the evening. That still holds, and MCS tells consumers that battery storage plays a role in maximising what a household earns under the Smart Export Guarantee by giving more control over what is used and what is sold.

The newer case does not depend on panels at all. On a time-of-use tariff the battery charges when electricity is cheap and discharges when it is expensive, and the arithmetic is about the spread between the two rates rather than about sunshine. That makes a battery viable in a flat with no roof, or on a north-facing roof that would never justify an array, and it changes what you should be specifying: grid charging capability and power output matter more than capacity matched to a solar yield.

The two cases are not mutually exclusive, and a well-specified system does both. The reason to be clear about which one is driving your decision is that it changes the sizing. A battery sized to soak up a summer solar surplus is not necessarily the battery you want if the real job is covering a peak-rate window every evening of the year.

Batteries lose capacity rather than failing outright. A pack that held a given amount when new holds less after several years, and the process is driven by how many cycles it has been through, how deeply it is discharged each time, how fast it is charged and discharged, and how hot it gets. Manufacturers express this differently from one another, which is why comparing two warranties usually means comparing a cycle count with a retained-capacity percentage with a number of years, and none of them map neatly onto the others.

Temperature is the variable a homeowner can influence and the one most often ignored. The same pack in an unheated garage, in a hot loft, and in a ventilated utility space will not age at the same rate, which is another reason siting is not simply a fire question. It is also why the location argument should be settled on technical grounds at the design stage rather than by what fits.

The honest framing for a quotation is that the battery is the component in a home energy system most likely to be replaced during the life of the solar array, and that the replacement path should be part of the design. Can the pack be swapped without replacing the inverter? Is the position accessible for a unit of that weight? Those questions cost nothing to ask now and a great deal to answer later.

Capacity is the obvious variable and rarely the decisive one. What moves a quotation is whether the battery is DC-coupled into a new hybrid inverter or AC-coupled with its own, how far the chosen location is from the consumer unit and the existing inverter, whether that location satisfies the requirements for siting and ventilation without building work, whether backup circuits are wanted, and what state the existing installation is in - board capacity, earthing, and whether protective devices suit energy flowing both ways. Adding a battery at the same time as solar avoids paying twice for the same electrician, the same scaffolding and the same commissioning.

LokalMatch is purely the introduction. Write down what you want once, add your postcode, and installers who work in your area contact you directly. It costs homeowners nothing; the pros pay for the leads they receive. LokalMatch does not install batteries, has no say in what anyone charges, and does not vet, rank or recommend the businesses that get in touch.