Choose a realistic duration
A quick cycle and a long cycle do not use the same window. Set the duration so the recommendation compares blocks similar to real usage.
Laundry and appliances
Best time to run a washing machine in Spain
Washing machines, dishwashers, and dryers can often wait a few hours. Power Window compares hourly PVPC prices to find when that flexible load is cheapest.
Treat it as flexible load
A dishwasher often fits well into valley periods or cheap solar-heavy hours. The app follows the day's price signal instead of a fixed rule.
Higher power, higher impact
A dryer usually draws more power than smaller appliances. Moving it away from expensive hours can make the difference per run more visible.
Repeat the pattern
The practical saving comes from repetition: a couple of laundry runs, several dishwashers, and some drying cycles each week can add up.
Practical guide
How to shift appliances without overthinking it
Appliances do not have the same impact as EV charging, but they are easy to move. The point is building a simple routine, not chasing every cent.
Use windows, not isolated hours
A washing machine can run for more than one hour, and a dryer can take several. If a cycle starts in a cheap hour but finishes in an expensive one, the result is weaker. That is why the app compares complete windows.
Prioritize the bigger loads
If you can only move one thing, start with a dryer, water heater, cooling, heating, or EV charging. Laundry and dishwashing are useful habits, but the saving compounds when several flexible loads move during the week.
Avoid programming blindly
Many people assume overnight is always cheapest. In Spain that can be true on some days, but solar-heavy days can make midday hours competitive too. Looking at the curve avoids old rules of thumb.
Frequently asked questions
Using appliances in cheaper hours
What is the best time to run a washing machine?
It depends on the day and duration. Power Window ranks remaining windows so you can start the cycle in the lowest-price period.
Does it also work for dishwasher or dryer?
Yes. The selector includes approximate loads for washing machines, dishwashers, dryers, cooling, and custom appliances.
Is it worth shifting small appliance loads?
One wash will not change your finances. The point is turning several flexible weekly loads into a lower-price routine.
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