Virtual energy efficiency consulting

Move around your home with your smartphone and we’ll tell you where and how you can save energy. With no charge and no fuss. We’ll be happy to advise you!


Telephone number
+41 58 319 26 88

Comparing your electricity consumption

Do you want to save electricity? We're happy to help you with that. Take a look at our tips and tricks for your home or contact our energy efficiency consulting service. You can compare your electricity consumption here.

Electricity consumption in an apartment (kWh/year)
Number of people Low consumption Average consumption High consumption

Comparative values for electricity consumption per year in an apartment

Electricity consumption in a single-family house (kWh/year)
Number of people Low consumption Average consumption High consumption

Comparative figures for annual electricity consumption in a single-family house

Tips and tricks for your home


  • Avoid preheating, it’s not usually necessary. 

  • If the cooking time is longer than 40 minutes, you can turn the oven off ten minutes before the end. The residual heat will be enough.

  • Bake in convection mode on several levels at the same time.


  • Don’t leave lights on unnecessarily.

  • Switch to energy-efficient LED bulbs. They offer an energy saving of up to 80%.

  • Use the LED consultation service in the ewz customer centre. If you’re not happy with the bulbs you buy, you can return them within 14 days.

Hot water

  • Heat water to a maximum of 60°C. Install single-handle or thermostatic mixer taps. When mixing by hand, run the hot water first, then the cold.

  • Have a shower instead of a bath: you’ll use up to five times less hot water.

  • Descale your boiler regularly and switch it off if you are away for a longer period of time.


  • Make full use of the machine’s capacity.

  • Use the eco programme for lightly soiled dishes.

  • Wash small quantities of dishes by hand, but don’t keep the water running when you do so.


  • Use an insulated pan with a closed lid.

  • Use a pressure cooker if it’s a long cooking time.

  • Make sure that the diameter of the pan and the hob ring match.

  • Reduce the heat early and use the residual heat.


  • Set it to the correct temperature: fridge 5 to 7°C, freezer -18°C.

  • Don’t open the door any more than necessary and keep the air vent clear.

  • Let hot food cool down before putting it in the fridge.

  • Defrost your appliances regularly.


  • Most appliances still use electricity when in standby mode.

  • Always switch your television, hi-fi, computer or coffee machine off completely.

Washing machine

  • Do washing that needs a hot wash at 60°C instead of 95°C. Special detergents will make sure that your whites don’t go grey.

  • Avoid pre-washing lightly soiled items and make full use of the machine’s capacity.

  • You’ll save the most energy if your washing machine can be set to cold wash (15-20°C).

Tumble dryer

  • Dry large items of laundry like bedding outdoors.

  • Spin your washing at a minimum of 1,400 revolutions per minute.

  • Fill the tumble dryer completely and dry light and heavy fabrics separately.

  • Clean the air filter after every use, otherwise there is a risk of fire.

11 tips to save water
Saving water also saves energy and therefore money. We'll show you how you can use water wisely in your home and garden.
To the tips (in German)

12 tips for heating correctly
Sustainable heating is really easy. We’ll show you how to reduce CO₂ emissions and save money.
To the tips (in German)

Subsidies for household appliances
Together with Topten, we promote the sustainable use of resources. You can benefit from subsidies if you buy an energy-efficient household appliance.
Benefit now (in German)

2000-watt targets subsidy
We're rewarding the efficient use of resources and promotion of renewable energies with subsidies as part of the city of Zurich’s 2000-watt targets.
To the 2000-watt targets

Frequently asked questions

There are plenty of ways you can save energy in your daily life or in your home, which means you’ll save money too. Use energy efficiently. You can find out more in our energy-saving tips and under in-home energy audit. Or you can get advice by phone or in person at the ewz customer centre.

The personal ewz customer advisors are there to help business customers.


Electricity is cheaper at night and on Sundays. For example, you could do your washing and drying during off-peak hours. This will help you save money. Peak tariff: Monday to Saturday, 6 am to 10 pm. Off-peak tariff: all other times. Click here to go to our energy-saving tips.