Set up your home
Choose your electricity tariff and add your appliances. If you have solar panels, a battery or an electric car, add those too.
A daily plan for your electricity
The right time for every appliance.
WattADay finds the best time to run the washing machine, charge your car or use the energy from your solar panels. Each day, you get one simple plan built around your home.
- No account required
- Your home details stay on your phone
- Built for the Greek electricity market
Estimated monthly saving
€3.39
Best time today
10:00–16:00
How it works
From your home details to a simple daily plan.
You choose your electricity tariff and appliances. WattADay does the calculations and shows you what is worth using, and when.
It compares every available time
It considers electricity prices, expected solar production and battery energy, always within the time window you choose.
See your plan for the day
The app shows you when to start each appliance and explains why that time was chosen. If you want, it can remind you too.
Inside the app
Everything you need for today.
See the best times, the actions in your plan and the estimated difference in cost compared with your usual routine.
Swipe to see more screens.
For every home
Useful whether you have solar or not.
Uses the prices from your tariff
It works with fixed, time-of-use and dynamic tariffs, as well as energy packages.
Gets more from your solar panels
See when to use solar energy directly and when it is worth storing it or sending it to the grid.
Works around your routine
You decide when each appliance can run. WattADay looks for the best time only within those limits.
Reminds you when it is time
Turn on reminders for the appliances you choose, so you do not need to keep checking the app.
By Solar Home
Designed to help your home make better use of energy.
WattADay is a Solar Home app. If you do not have solar panels, it can estimate the additional savings a solar-and-battery system could provide once it has enough information about your home. Solar Home provides the final assessment and quote.
Learn more about Solar HomeQuestions and answers
What you need to know before you start.
Straight answers about what WattADay does, which homes it supports and how it handles your information.
What does WattADay do?
WattADay creates a daily electricity plan for your home. It compares the hours available for each Plan appliance and recommends when to use it, based on your tariff, your chosen routine and, where relevant, expected solar production and battery energy.
Can I use WattADay without solar panels?
Yes. WattADay can find better times for appliances using the prices in your electricity tariff. Solar panels, a home battery and an electric car are optional.
Which electricity tariffs does WattADay support?
WattADay supports fixed-price, time-of-use and dynamic tariffs, as well as energy packages available for the Greek electricity market. The recommendation uses the prices that apply to your selected tariff.
Do I need an account, and where is my home information stored?
You do not need an account. The home and appliance details you enter remain on your phone.
WattADay on iPhone and Android
Tomorrow's energy plan, ready on your phone.
Download WattADay and set up your home in a few minutes. Your details stay on your device.
The apps have not been published yet. Download links will appear here as soon as they are available.