Independent guidance for the United KingdomLow-data guideGlobal edition

Essentials

Power cuts: a UK household plan

Most power cuts are local and short, but a longer outage can also interrupt heating, broadband, mobile networks, water, cash machines and fuel pumps.

Last checked: 25 August 2026 How we use official sources

Prepare before the lights go out

  • Keep a battery or wind-up torch where it can be found in the dark. Torches are safer than candles.
  • Keep a charged power bank, spare batteries and a battery or wind-up radio.
  • Write useful phone numbers and radio frequencies on paper.
  • Check whether your broadband-based landline or telecare equipment will work without power.
  • Plan with your care team or equipment supplier if you rely on powered medical equipment.
  • Find your Great Britain load-block letter through Powercut 105 and write it on your plan.

During a power cut

  • Turn off heat-producing appliances and unplug sensitive electronics before power returns.
  • Keep fridge and freezer doors closed. Follow Food Standards Agency advice before eating food that may have warmed.
  • Use layers, blankets and one occupied room to conserve warmth. Check people who may be at greater risk.
  • Use radio and official local channels for updates if broadband or mobile data fails.
  • Call 999 or 112 from any available mobile network for a life-threatening emergency.

Priority support

Energy suppliers and network operators keep separate Priority Services Registers in Great Britain. Registration can provide accessible communication and priority support, but it does not guarantee uninterrupted electricity. Northern Ireland uses Customer Care Registers.

Evidence and official services

Sources behind this guidance

Open the official page for current detail, live services and local instructions. This page was checked on 25 August 2026.