If you’re on a time-of-use tariff, laundry can be one of the easiest jobs to shift. Citizens Advice gives a simple example of why: one Economy 7 tariff it describes charges 11p per kWh off-peak and 35p per kWh at peak times (Citizens Advice). That kind of gap changes the maths fast.

The basic idea is simple. Off-peak energy apps show you when electricity is cheaper, then help you move your washing machine or dryer into those lower-cost hours. In the best setups, the app does the timing for you. And as the U.S. Department of Energy puts it: “If you are able to shift your power use to off-peak times... these programs can save you money” (DOE).

How off-peak laundry savings work

Off-peak pricing means electricity costs less when demand is lower, usually overnight or in other quieter windows. Regulators and consumer groups describe these as time-of-use tariffs, Economy 7, Economy 10, EV tariffs, or dynamic tariffs depending on the market (Ofgem, Citizens Advice).

For laundry, that means three practical things:

  • Check when your cheap hours actually are.
  • Delay the cycle so it starts in that window.
  • Avoid high-price evening peaks whenever possible.

Timing matters more when your appliances are already efficient. For example:

  • ENERGY STAR says certified front-load washers use about 50% less energy and water than top-load agitator washers (ENERGY STAR).
  • ENERGY STAR full-sized certified washers use 14 gallons of water per load versus 20 gallons for a standard machine (ENERGY STAR).
  • Energy Saving Trust says choosing an A-rated washing machine over a D-rated one could save around £100 in Great Britain over its 11-year lifetime (Energy Saving Trust).

So the cheapest laundry routine is usually: efficient machine, full loads, lower temperatures, and off-peak timing.

5 apps that make off-peak laundry easier

1. Octopus Energy app

If you’re on Octopus, this is the most direct way to line up laundry with cheap electricity. Octopus supports smart tariffs with off-peak windows and half-hourly pricing. Its Intelligent Octopus Go tariff gives a lower whole-home rate from 11:30pm to 5:30am (Octopus Energy). Octopus also lets customers view detailed usage in the app, including half-hourly data if enabled (Octopus Energy).

In practice, this is best when you already know your washer’s cycle length and just need the cheapest start time.

Pros

  • Strong fit for smart tariffs and off-peak households
  • Half-hourly usage data helps you see whether timing changes are working
  • Useful for both fixed off-peak windows and more dynamic pricing

Cons

  • Best features depend on being an Octopus customer
  • Full value depends on having a compatible smart meter setup
  • You still need either manual timing or a compatible smart appliance for automation

2. Emporia Energy app

Emporia is the most practical option for a regular, non-smart washing machine if you’re comfortable adding hardware. Its app supports Smart Saver, which links a device to your utility rate plan and runs it during lowest-cost periods (Emporia Help). Emporia also says its scheduling feature can automate smart plugs and other connected devices when electricity costs less (Emporia).

This one feels especially useful for budget-focused households because it bridges the gap between utility pricing and older appliances.

Pros

  • Good for “dumb” appliances when paired with compatible smart plugs
  • Can use verified utility plans or manual rate entry
  • Strong automation angle once set up

Cons

  • Requires Emporia-compatible hardware
  • Smart plugs have load limits, so compatibility matters
  • Adds upfront cost before the savings start

3. Home Connect

Home Connect is the cleanest app-first option if your washer or dryer is in the Bosch/Siemens/Home Connect ecosystem. Bosch says the app supports Delayed Start, and Home Connect also unlocks extra washing and drying programs on compatible appliances (Bosch Home Connect).

For laundry, that means the app is less about tariff analysis and more about making delay-based off-peak washing easy.

Pros

  • Smooth scheduling for compatible smart appliances
  • Useful notifications and remote monitoring
  • Extra programs can help match cycle choice to fabric and load

Cons

  • Only helpful if your appliance supports Home Connect
  • The exact laundry controls vary by model
  • It does not compare energy tariffs for you

4. HomeWizard Energy

HomeWizard is one of the smartest off-peak setups for European households on dynamic tariffs or with solar. The company says you can connect Home Connect appliances to the HomeWizard Energy app and automatically start your washing machine, dryer or dishwasher when energy is cheapest (HomeWizard).

This is the app that comes closest to true “set it and forget it” laundry timing.

Pros

  • Strong automation for cheapest-hour scheduling
  • Especially useful with dynamic contracts and solar surplus
  • Good visibility into household energy use with the wider HomeWizard setup

Cons

  • Best results usually need a HomeWizard meter setup
  • Most useful in markets where dynamic pricing is common
  • Works best alongside Home Connect-compatible appliances

5. Samsung SmartThings Energy

SmartThings Energy is the best pick if you already live in the Samsung ecosystem. Samsung says AI Energy Mode saves up to 70% energy on select cycles and products (SmartThings). It also pulls your appliances into a wider home energy view.

For laundry, the appeal is convenience: one app for device status, automation, and energy-saving modes.

Pros

  • Strong all-in-one app for Samsung households
  • AI Energy Mode is one of the clearest energy-saving features in this category
  • Useful if you also want broader smart-home energy control

Cons

  • Savings claims apply to select products and cycles, not every washer
  • Best experience depends on owning compatible Samsung appliances
  • Less focused on tariff-first automation than utility-led apps

Which type of app saves the most?

The answer depends on your setup.

  • If you have a smart tariff, a utility app like Octopus Energy gives you the clearest cheap-hour signal.
  • If you have a regular washer, Emporia Energy is the most practical workaround.
  • If you have a compatible smart appliance, Home Connect is the easiest way to delay laundry into off-peak hours.
  • If you want automation around dynamic prices, HomeWizard Energy is the most advanced option here.
  • If you already use Samsung appliances, SmartThings Energy is the easiest low-friction upgrade.

Current trends making these apps more useful

Two developments matter right now.

First, smart and dual-rate tariffs are becoming more important. Ofgem notes that Economy 7 users need a meter that records peak and off-peak consumption separately, and it also highlights the ongoing shift toward replacement smart meters after the Radio Teleswitch Service switch-off from 30 June 2025 (Ofgem). In plain English: smarter meters make smarter pricing easier.

Second, appliance apps are getting more energy-aware. HomeWizard explicitly targets dynamic contracts, and Samsung is pushing AI-led energy control inside appliance ecosystems (HomeWizard, SmartThings). The direction is clear: more laundry savings will come from automation, not from remembering to press start at midnight.

What actually works best day to day

The cheapest routine is usually not the fanciest one. It’s this:

  • Know your off-peak hours.
  • Run full loads.
  • Use lower-temperature cycles where suitable.
  • Delay washing away from peak-price periods.
  • Use automation only if it genuinely fits your home and appliance setup.

That’s why the best app is rarely the one with the most features. It’s the one that matches your tariff, your machine, and your willingness to automate a basic job.

References