A washing machine uses 0.4-0.6 kWh and about 50 liters per Eco cycle. Here are the real numbers, what it costs per year and how to reduce spending without sacrifices.
A modern washing machine, on the reference program (Eco 40-60), consumes between 0.40 and 0.60 kWh per cycle and between 45 and 60 liters of water. Translated into money, a wash typically costs between 10 and 18 cents in energy alone. The figure you see on your bill, however, almost never depends on the machine: it depends on how you use it.
Here's the point: almost all the energy in a wash is used to heat the water, not to spin the drum. This is why the same washing machine can consume double or half depending on the temperature you set and how full you fill it. In this guide you'll find the real numbers, where they come from, and how to keep them low without sacrificing results.
In brief: what you'll find in this guide
The short answer
The typical consumption of an Eco 40-60 cycle on a good class washing machine is about 0.45-0.55 kWh and 50 liters of water. At a reference price of around 0.25 euros per kWh, that means just over 10 cents of energy per wash. A 60-degree cotton cycle can easily triple that value, while a cold quick wash brings it down. The strongest lever, therefore, is not which washing machine you buy, but what temperature you wash at and how full you fill the drum.
How consumption is measured today: kWh per 100 cycles
From 1 March 2021, the European energy label changed. The old A+, A++ and A+++ classes were eliminated and replaced with a single scale from A to G, much stricter: almost no model reached class A at first. Along with the scale, the way of declaring consumption also changed.
Previously, estimated annual consumption was shown. Today the label shows the energy consumption in kWh per 100 cycles of the Eco 40-60 program, which has become the official reference. It's a more honest figure, because it shows the program that the manufacturer itself indicates as the most efficient for normal laundry, lightly or moderately soiled. To convert to consumption per single wash, simply divide by one hundred: a label that declares 46 kWh/100 cycles corresponds to about 0.46 kWh per cycle.
Below that number, the label also shows the water consumption in liters per cycle and the duration of the Eco program. If you want to understand every item in detail and how to compare two models with the same rating letter, we've dedicated a specific guide to how to read the energy label.
Why the Eco program takes so long
Many people are surprised: the Eco program can last three or four hours, much longer than a traditional cotton cycle. It's not a flaw, it's the mechanism of saving itself. The washing machine heats the water less and compensates for the lower temperature with longer soaking and movement time. Less heat means less energy: it's the duration that makes the cycle efficient. The energy class on the label always refers to Eco 40-60, never to quick cycles.
How much energy a wash really needs
The key fact to remember is just one: the vast majority of energy in a wash is used to heat the water. Drum rotation, the pump and electronics account for little. This leads to an almost infallible practical rule: the higher the temperature, the higher the consumption. This is why the same garment washed at 30, 40 or 60 degrees has very different costs.
| Program | Temperature | Indicative consumption per cycle |
|---|---|---|
| Quick / cold | 20-30 degrees | 0.2-0.4 kWh |
| Eco 40-60 (reference label) | low, long time | 0.4-0.6 kWh |
| Cotton 40 degrees | 40 degrees | 0.6-0.9 kWh |
| Cotton 60 degrees | 60 degrees | 1.0-1.4 kWh |
| Cotton 90 degrees / sanitizing | 90 degrees | 1.8-2.5 kWh |
The values are indicative and vary with load and water hardness, but the ratio remains valid: regularly switching from cotton 60 to Eco 40-60 can halve electricity consumption with equally clean laundry.
Spin cycle has little impact on energy (but it matters if you dry)
A 1,400 rpm spin uses very little energy compared to water heating. That's not where you save. Spin speed matters for another reason though: higher spins leave clothes less damp, reducing time and energy if you then use a dryer. For washing alone, 1,200–1,400 rpm is more than sufficient for home use.
How much water a cycle uses
On the Eco 40-60 program, a modern washing machine uses between 45 and 60 litres for a full load, often just over 47 litres on efficient models. It's much lower than you'd think: the washing machine doesn't fill the drum with water, it measures and recirculates it. The same rule about load applies here: washing half a drum doesn't halve water use, because part of the consumption is fixed.
On very bulky items (duvets, blankets), water and energy increase because more liquid is needed to wet them evenly. This is why choosing the right capacity makes a difference in consumption too: we cover this in our guide on which capacity to choose between 8, 9 and 10 kg.
How much a wash costs (and how much in a year)
Let's work it out using a reference price of 0.25 euros per kWh (the mid-range of the free domestic market according to ARERA for 2026 is between 0.25 and 0.28 euros). Water costs vary widely from town to town, so here we focus only on electricity, which is the item the machine impacts most.
| Program | Consumption | Energy cost per cycle |
|---|---|---|
| Eco 40-60 | around 0.50 kWh | around 0.13 euros |
| Cotton 40°C | around 0.75 kWh | around 0.19 euros |
| Cotton 60°C | around 1.20 kWh | around 0.30 euros |
On an annual basis the picture becomes concrete. A family doing about 5 washes a week (just over 250 a year) on the Eco program spends around 30-35 euros just on energy in a year. The same family, always washing at 60°C, would reach close to 80 euros. The difference, over 40 euros a year, comes only from temperature: no need to change your washing machine.
What drives up consumption
Washing too hot out of habit. By far the number one cause. Everyday laundry cleans beautifully at 30-40°C with a good detergent.
Doing half loads. Two half loads use much more than one full load, because part of consumption doesn't depend on the amount of clothes.
Always using the quick cycle. The fast cycle seems economical, but to clean in little time it raises the temperature: it often uses more than Eco.
Pre-wash when it's not needed. It adds a phase with water and, sometimes, heating. Useful only for heavy, localized dirt.
Limescale. An encrusted heating element heats worse and uses more energy. Regular maintenance also protects your consumption.
How to reduce consumption without sacrifice
Lower the temperature as your first step: 30-40°C for normal laundry, saving 60°C for linens and heavily soiled items.
Use Eco 40-60 as your default program: it takes longer but is the most efficient and gentlest on fabrics.
Fill the drum 80-100%: it's the single habit that makes every kilo of laundry more economical.
Measure detergent properly: excess doesn't wash better, leaves residue and sometimes triggers extra rinses.
Take advantage of time-of-use rates if you have a two-tier tariff: washing in the evening or weekend, when energy costs less, cuts spending at the same consumption.
If you're still choosing a model and want to understand how to weigh energy class, consumption and features, a good starting point is our guide on how to choose a washing machine.
The Portos choice
A washing machine's consumption is decided more by habits than by the price list. A high-class model starts with an advantage, but real savings come from three actions: washing at low temperature, using Eco 40-60 and filling the drum. Anyone doing these three things keeps energy spending under 35 euros a year even with an older washing machine. Before chasing the latest energy class, it's worth adjusting how you wash: it's free and delivers immediate results.
Frequently asked questions
Answers to the most common questions about consumption, temperature and the Eco program can be found in the dedicated section at the bottom of the page.
From general data to the model: the same calculation applied to a washing machine actually on sale, with 0.489 kWh and 50 litres declared per cycle, is in the analysis of the Bosch Serie 6 WGG244ZRIT.
The edge case, by the numbers: there's a 9 kg washing machine that declares 0.248 kWh per cycle, that is less than eight cents per wash. How it gets there, and why the calculation changes if you leave it connected to Wi-Fi, is in the analysis of the Bosch Series 8 WGB24402IT.
Sources
European Commission, new energy label for washing machines in force from 1 March 2021 (consumption in kWh per 100 cycles on the Eco 40-60 programme).
ENEA, Department for Energy Efficiency, Energy label for washing machines.
ARERA, reference values for electricity prices for the domestic market, 2026.
The other half of laundry: how much water remains in the laundry after spinning determines how hard the dryer will work. The calculation of drying costs, with the connection between residual moisture and kilowatt-hours, is in how much it costs to use a dryer in a year.
