Preparing for a power cut
What matters most in a power cut, what official guidance in the UK says, and long-life food that suits it.
In a power cut, the things that matter most are torch, spare batteries, charged power bank, battery or wind-up radio. Keep fridge and freezer doors shut during a power cut so they stay cold for several hours.1
What matters most
- Torch Essential
A torch for each part of the home you'd need to move around in the dark. - Spare batteries
The right sizes for your torch and radio. - Charged power bank
To keep a phone charged during a power cut. - Battery or wind-up radio
To hear updates if mobile networks are down. - Blankets or sleeping bags
To keep everyone warm if the heating is off. - Warm clothing
Layers, hats and gloves that are easy to find. - Manual tin opener
A tin opener that doesn't need electricity. - Some cash
Card machines and cash points may not work in a power cut. - Plan for medication that needs a fridge Essential
Know how you'd keep it cool during a power cut. - Backup plan for powered equipment Essential
A backup power source or plan for equipment that needs electricity.
What official guidance in the UK says
- Keep fridge and freezer doors shut during a power cut so they stay cold for several hours.1
- The Priority Services Register is a free service for people with extra needs (Customer Care Registers in Northern Ireland).1
- In a national energy shortage, UK power cuts could rotate by area; find your load block letter by postcode at powercut105.com.1
Stay safe
Water and food for a few days
For two adults, SupKit's figures for 3 days are:
| 3 days | |
|---|---|
| Drinking water | 18 L |
| Food energy | 13,500 calories |
Long-life food that suits a power cut
Each of these keeps without a fridge and doesn't need the fridge once opened:
- Tinned chilli
- Tinned soup
- Baked beans
- Microwave rice pouch
- Tinned tuna
- Crackers
- Peanut butter
- Dried fruit and nuts
- Cereal bars
- Tinned fruit
Allergies, dietary needs and children
Plan around everyone at home: allergies, intolerances and diets come first, and familiar food matters most for children. Recipes vary between brands, so always read the label of the product you buy.
| Food | Typical allergens | Typically suitable for |
|---|---|---|
| Tinned chilli | varies by recipe | check the label |
| Tinned soup | varies by recipe | vegetarian |
| Baked beans | none of the main allergens in its main ingredient | vegan |
| Microwave rice pouch 250g | none of the main allergens in its main ingredient | vegan |
| Tinned tuna | fish | check the label |
| Crackers | cereals containing gluten | vegan |
| Peanut butter | peanuts | vegan, gluten free |
| Dried fruit and nuts | tree nuts | vegan, gluten free |
| Cereal bars | varies by recipe | vegetarian |
| Tinned fruit | none of the main allergens in its main ingredient | vegan, gluten free |
Typical allergens and diets are SupKit's guide to the main ingredient, not a product's label.
- UK food law names 14 major allergens, including cereals containing gluten, milk, eggs, fish, peanuts, tree nuts, soya, sesame, celery, mustard and sulphites.3
- On pre-packed food in the UK, these allergens must be emphasised in the ingredients list, for example in bold.3
- 'May contain' warnings aren't a legal requirement, so a missing warning doesn't guarantee a food is free of an allergen.3
Young children
Questions
What do I need for a power cut?
Torch, Spare batteries, Charged power bank, Battery or wind-up radio, Blankets or sleeping bags, Warm clothing, Manual tin opener, Some cash, Plan for medication that needs a fridge, Backup plan for powered equipment.
How do I stay safe in a power cut?
The NHS lists portable generators among the sources of carbon monoxide poisoning.
Sources
- Power cuts, UK Government Be Ready campaign. Checked 28 October 2026. Contains public sector information licensed under the Open Government Licence v3.0.
- Carbon monoxide poisoning, NHS. Checked 28 October 2026.
- Food allergy and intolerance advice for consumers, Food Standards Agency (GOV.UK). Checked 28 October 2026. Contains public sector information licensed under the Open Government Licence v3.0.
- Foods to avoid giving babies and young children, NHS. Checked 28 October 2026.
We summarise official guidance in our own words. Always follow advice from your local authorities.


