Taking a hot shower, heating your home, cooking dinner – all things we take for granted. All at risk.
Britain’s gas storage levels are at a decade-low, while the UK’s largest storage facility faces closure as its stockpiles near empty.
Wars in the Middle East and Ukraine continue to constrain supplies and push up prices. And what if Donald Trump goes through with his threat to put "America first" and stop the flow of fuel abroad?
Niall Paterson is joined by Sky's economics and data editor Ed Conway, who was given exclusive access to a previously unseen emergency planning exercise – revealing what would happen if the country runs out of gas.
You can watch Ed’s full investigation here.
Have you got a question for Niall? Email us: why@sky.uk