The price cap will hit £1,928 from October – another £63 added to the average bill. Every kilowatt-hour you can shift to 2am is a kilowatt-hour bought at a discount.
As reported by The Guardian, the idea of doing laundry during the World Cup’s 2am kick-offs isn’t a gimmick – it’s a legitimate strategy for households on Time-of-Use tariffs. The logic is simple: when millions are asleep, the grid’s demand plummets, and wholesale electricity prices can fall by 50% or more.
Who qualifies – and who doesn’t
Time-of-Use tariffs are not available to everyone. You need a smart meter that records half-hourly consumption, and your supplier must offer a product that passes through time-varying prices. Octopus Energy’s Agile tariff is the most famous – it tracks wholesale prices every 30 minutes. EDF’s TimeShift and OVO’s Beyond also offer off-peak rates, though with fixed windows rather than real-time pricing.
The catch is penetration. Ofgem data from March 2025 shows 14 million smart meters in British homes, but fewer than 300,000 households – roughly 2% – are on a Time-of-Use tariff. The rest are stuck on standard variable tariffs that charge the same rate at 3pm and 3am. If you’re on one of those, the World Cup trick does nothing for your bill.
What it costs a typical 3-bed semi
Energy Saving Trust modelling suggests a household using 12,000 kWh of electricity a year could save £60–£80 annually by shifting 30% of its consumption to off-peak hours. That means running the washing machine, tumble dryer, dishwasher, and even charging an electric vehicle between 11pm and 6am.
For context, a single 40°C wash cycle uses around 0.8 kWh. At the current price cap of 24.5p/kWh, that’s 19.6p. On an Agile tariff, the same cycle at 2am might cost 10p – a saving of 9.6p per load. Do three loads a week and you’re looking at £15 a year from laundry alone. Add in the dishwasher, electric car charging, and overnight heating, and the savings stack up.
The but – and what the World Cup trick misses
Yet the real prize isn’t the World Cup. It’s the permanent shift in behaviour. The 2am laundry load is a conversation starter, but the lasting change is a household that routinely runs appliances after midnight. Ofgem’s own analysis shows that if 10% of households adopted Time-of-Use tariffs, peak demand could fall by 1.5 GW – enough to avoid firing up a gas peaker plant.
What this misses is the practical friction. Not everyone wants to load a washing machine at 2am. Noise, safety, and the sheer inconvenience of reprogramming daily routines are real barriers. Some modern machines have delay-start timers, but many don’t, and the ones that do can be confusing to set. The Energy Saving Trust recommends checking your appliance’s manual before assuming it can be scheduled.
How to make it work for you
Step one: check if your smart meter is compatible. Most SMETS2 meters are. Step two: compare Time-of-Use tariffs on a comparison site that shows half-hourly rates, not just annual averages. Step three: trial it for a month – run one appliance overnight each night and track the difference on your in-home display.
Households on standard variable tariffs can apply for a smart meter through their supplier. Installation is free. Once it’s in, you can switch to a Time-of-Use tariff – but do the maths first. Some tariffs have higher daytime rates that could wipe out your overnight savings if you’re not shifting enough load. Ofgem’s online calculator can model your specific profile.
The World Cup ends in December. The savings don’t have to.
Frequently Asked Questions
Yes. Time-of-Use tariffs require a smart meter that records half-hourly consumption so your supplier can charge different rates for different times of day. SMETS2 meters are compatible; older SMETS1 meters may need a remote upgrade.
Modern washing machines and dishwashers are designed for overnight use, but check your model's manual for delay-start functionality. Noise can be an issue in flats – consider vibration pads or running only quiet cycles. Most detached and semi-detached homes have no noise problem.
