Questions people ask
What Terayt does, how it works out your numbers, and what it does with your data.
Something else? Write to us
What does Terayt do?
It helps you understand your rooftop solar system: what it makes, what it should make, and why the two differ. Clouds, heat, dust and your roof's angle all take a share, and we explain each one in plain words.
How is it different from my inverter's app?
Your inverter's app shows what your panels made. Terayt also works out what they should have made under that day's weather, so you can see whether a low day was just the weather or something worth looking at.
Do I need to connect my inverter?
No. The free estimate needs only your postcode and system size. Daily tracking, also free, adds the tilt and direction of your panels and what a clean costs you. Inverter data is optional and only sharpens the picture.
How do you know how dusty my panels are?
We combine daily dust levels in the air, rain, wind and sunshine for your exact location with the tilt and direction of your panels.
How accurate is it?
It's an estimate, worked out every night from the dust in the air, rain, wind and sun at your location. Add your inverter data on the paid plan and Terayt checks it against what your panels actually produce.
Will you ever tell me to clean when it isn't worth it?
No. We only recommend a clean once it will pay for itself within 45 days (about six weeks). If rain is coming that will do the job, we tell you to wait.
Does rain clean my panels?
Only when it rains hard enough. We look at how hard the rain falls, not just how much of it there is. Drizzle cleans almost nothing and can even turn the dust into mud, so it doesn't count.
Why did my panels stop in the middle of a sunny day?
In Cyprus, it may be a grid cut. On sunny days when few people are using power, EAC can switch rooftop panels off for a few hours to keep the grid safe. Your system is fine, and cleaning won't help. With your inverter's readings on the paid plan, we show you every time it happens.
Which inverters work with Terayt?
You can add readings from Aurora Vision, SolarEdge, Enphase, Fronius and SMA, or any inverter whose file has the date and time plus power or energy. If yours doesn't work, send us a sample file.
What does it cost?
The free plan stays free. The paid plan adds analysis from your own inverter data: what your panels really made, a daily check that the system is working, and grid cuts.
How often do the numbers change?
Every night. Inverter readings you add are read as soon as you upload them.
What do you do with my data?
We use it to work out your figures. We don't sell it or share it with advertisers. Analytics only run if you accept them in the cookie banner, and you can delete your account and its data at any time in Settings. The privacy policy has the full details.
How do I start?
Get a free estimate with your postcode and system size, no account needed. For daily tracking, answer a few questions about your roof and create a free account. No card needed.