How to save electricity costs: find power-hungry devices
Electricity costs are easier to reduce when you look beyond the total bill and check devices, usage time and tariff components separately. This guide helps you interpret your electricity calculator result and find practical savings potential.
Open electricity cost calculator →Quick checklist
- Calculate the largest devices individually
- Do not underestimate usage time
- Use the electricity price from your current bill
- Include the base fee in total cost
- Compare old appliances with efficient replacements
- Review your tariff at least once a year
1. Identify the biggest power consumers first
High electricity costs are often caused by a few devices with high power or long runtime. Typical examples are old refrigerators, freezers, space heaters, dryers, air conditioners, gaming PCs and electronics that run permanently. Calculate these devices individually before judging the whole household.
2. Use realistic usage times
Many estimates are too optimistic because runtime is underestimated. A device with moderate power can still become expensive if it runs for many hours every day. Calculate one realistic scenario and one more efficient variant.
3. Compare variable price and base fee together
The price per kWh matters, but it is not the only factor. With low consumption, the monthly base fee can become a surprisingly large share of total cost. Compare both variable cost and total cost.
4. Avoid standby and permanent operation
Small always-on devices may look harmless individually but add up over months. Switchable power strips, energy-saving modes and turning devices off help with TVs, consoles, monitors, chargers and network devices.
5. Check whether replacing old appliances pays off
Replacement is most relevant for old devices that run continuously or draw a lot of power. The purchase price is not the only factor; compare the difference in annual electricity cost. The calculator helps you compare both variants.
6. Review your electricity tariff regularly
If your usage is realistic but costs remain high, the tariff may be the biggest lever. Check price per kWh, base fee, contract term, price guarantee and bonus conditions. A low kWh price only helps if the overall tariff fits.
Frequently asked questions
Which devices use the most electricity?
Devices with high power or long runtime matter most, such as space heaters, dryers, old cooling appliances, air conditioners, gaming PCs and always-on devices.
What saves the most electricity?
The biggest consumers usually offer the biggest savings. After that, check standby use, runtime and your electricity tariff.
Should I switch tariff or replace devices first?
It depends on the result. If individual devices are very expensive, compare replacements. If household usage is normal, the tariff may matter more.
Calculate your own electricity cost
Use the calculator to test these tips with your own numbers.
Open electricity cost calculator →