New guidelines ban dwelling batteries from lofts in UK properties
New electrical requirements coming into pressure on 15 April 2026 will change how dwelling battery techniques are put in throughout the UK.
The replace to the constructing regulation BS 7671, printed by the Establishment of Engineering and Know-how (IET) and the British Requirements Establishment (BSI), introduces tighter guidelines on the place batteries can safely be situated.
Lofts and different high-risk areas are actually excluded in an effort to enhance fireplace security and entry.
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What the brand new guidelines say
The up to date steerage introduces a brand new devoted part on stationary battery storage techniques, together with photo voltaic batteries, and units out stricter necessities for his or her set up.
In sensible phrases, the principles state that dwelling battery techniques shouldn’t be put in in loft areas or escape routes, similar to stairways or hallways, the place danger is taken into account larger and entry for upkeep or emergency isolation is harder.
The replace additionally introduces clearer expectations round protected set up situations, together with air flow, bodily entry, and protected isolation factors for upkeep.
Why the principles are altering
The revisions are largely pushed by security considerations linked to lithium-ion battery know-how, which is now extensively utilized in dwelling power storage techniques.
The IET and BSI-backed commonplace focuses on lowering the danger of thermal runaway, a situation the place battery cells overheat and may doubtlessly ignite.
Lofts are thought-about unsuitable for a number of causes highlighted in business steerage aligned with BS 7671:
- Excessive temperatures in roof areas can enhance battery stress
- Restricted entry can delay detection of faults or fires
- Escape routes enhance the protection danger if a fireplace happens
- Hearth unfold may be quicker in loft areas because of timber buildings and insulation supplies
Trade steerage accompanying the usual additionally stresses the necessity for batteries to be put in in places the place they are often safely remoted, inspected and maintained.
The place batteries can now be put in
Whereas loft installations are now not acceptable beneath the up to date steerage, dwelling battery techniques can nonetheless be put in in a variety of safer, extra accessible places.
The requirements level in the direction of installations in:
- Floor ground utility rooms
- Garages or devoted plant areas
- Exterior partitions in appropriate weatherproof enclosures
- Outbuildings the place entry and air flow necessities are met
The important thing requirement is that techniques have to be put in in accessible, ventilated places that don’t compromise escape routes and permit protected upkeep and isolation.
In observe, this implies householders and installers might want to plan battery placement extra fastidiously, somewhat than treating loft areas as a default storage location.
