Run Laundry and Dishes at the Cheapest Hours — Save with Spot Pricing

Finns run washing machines and dishwashers daily, but few think about when they're actually running. Quick answer: a typical 60 °C wash cycle consumes 0.9–1.2 kWh and costs 15–25 cents per hour in the afternoon, totaling 13–30 cents. The same wash at night at 3 cents per hour costs only 3–4 cents. Savings: 10–26 cents per wash. If a family washes four times per week, annual savings reach 20–55 euros just from timing. This article calculates precisely how much money you can save by scheduling washers and dishwashers for the cheapest hours, and which safety issues matter.

Real-world energy consumption for washing and dishes

Motiva, Finland's official energy efficiency center, reports that a modern A-rated washing machine consumes 0.84–0.99 kWh in a 60 °C program at full load. A dishwasher uses 0.84–1.0 kWh on a standard cycle. These figures are used for EU Energy Labeling. Older machines (over 10 years old) can consume significantly more—up to 1.5 kWh for washers.

Appliance & Program	Consumption (kWh)	Cost @ 3 ¢	Cost @ 15 ¢	Cost @ 22 ¢
Washing machine, 60 °C	0.9 kWh	2.7 ¢	13.5 ¢	19.8 ¢
Dishwasher, standard	0.92 kWh	2.8 ¢	13.8 ¢	20.2 ¢
Older washing machine	1.4 kWh	4.2 ¢	21.0 ¢	30.8 ¢

*Prices based on current Finnish spot market rates. Prices vary by hour and season.

Timing matters—annual savings are significant

An amateur might think 10–20 cents saved per wash is trivial. But add it up: a four-person family runs the washer 4 times weekly (208 times annually). If scheduled at night at 3 cents compared to a 15-cent daytime average, savings are: 208 × 0.9 kWh × 12 ¢ = 22.46 euros per year from the washer alone. Add the dishwasher (2 times weekly, 104 times annually): 104 × 0.92 kWh × 12 ¢ = 11.49 euros. Together: 34 euros annually by shifting to cheap hours.

By contrast, on many days afternoon prices hit 20–25 cents. If the family washed during those peak times, annual costs would reach 50–60 euros. The difference: 25–30 euros gained or lost purely from timing.

People ask in forums: "Is it worth delaying for a few cents?"

"Is using the washing machine's delay timer really worth it? In other words, how much do you save if you schedule the wash for night hours using the delay function?"

Suomi24 — "Electricity savings tips" thread, 2025

Yes, it's worth it—but not for everyone. On a fixed-rate electricity plan, timing makes no difference; the price is the same all day. On spot or hourly pricing, savings are real and add up quickly monthly. In winter, when price swings are larger, savings can reach 50 cents per wash.

"Is it safe to run the washing machine at night? I worry something could go wrong and flood the house while we're asleep."

Vauva.fi — Swedish-language discussion, 2025

A fair question, and one worth addressing directly below.

Safety: nighttime washing and water damage risk

I think it's important to be honest here: delaying washers and dishwashers to nighttime or when away saves money, but carries a small risk. Although machines are safety-certified, hose ruptures or seal failures can cause water damage that goes unnoticed until the next day. Insurers may deny claims if the appliance wasn't supervised.

Finland's Consumer Association recommends that delaying operation is safest only if someone is home or monitoring occurs. Fingrid's open data hub shows 15-minute updated price forecasts—so you can schedule the washer for the next morning's cheapest hour, usually 4–5 AM, when supervision is easier. A smart plug and delay timer together significantly reduce risk.

Real household example: four-person family in Helsinki

Take a real case: a four-person family in Helsinki washes 4 times and does dishes 2 times weekly. Both machines are A-rated (0.9 and 0.92 kWh). Their timing strategy is:

• Washers (208 annually): Scheduled at 3–4 AM, typically 2–3 ¢/kWh. Annual cost: 208 × 0.9 kWh × 2.5 ¢ = 4.68 euros
• Dishwashers (104 annually): Scheduled at night, 2.5 ¢/kWh. Annual cost: 104 × 0.92 kWh × 2.5 ¢ = 2.39 euros
• Total with night timing: 7.07 euros per year

By contrast, random scheduling—half at evening (18 ¢) and half at day (10 ¢)—averages 14 ¢. Annual cost: 208 × 0.9 × 14 ¢ + 104 × 0.92 × 14 ¢ = 27.60 euros. Savings from night timing: 20.53 euros annually. Over ten years: 205 euros.

Smart delay timers and built-in features

Modern washers and dishwashers include delay timers allowing programs to start later. Some are WiFi-connected and controllable from smart home systems. Finland's Energy Authority notes that using delay timers supports safe spot-price savings if the machine is supervised or positioned where leaks cause no damage.

What Statistics Finland says about Finnish washing habits

Statistics Finland reports the average household runs washers 4–5 times weekly. About 60% own dishwashers, used 2–3 times weekly. Combined, these appliances account for 8–12% of household energy—a significant factor on hourly pricing.

Sources

1. Motiva: Washing machine energy efficiency (Tier A)
2. Fingrid Datahub: Real-time price forecasts and 15-minute rates (Tier A)
3. Energy Authority: Hourly pricing and savings tips (Tier A)
4. Statistics Finland: Household energy consumption (Tier A)
5. Nord Pool: Nordic electricity markets (Tier A)
6. Consumer Association: Product safety and insurance (Tier A)
7. Sahkonhinnatnyt.fi: 15-minute spot prices (Tier B)
8. BKN: Finnish electricity prices and analysis (Tier B)