Estimated results
Estimated results are presented in a simple way
There is no need to read dense technical tables. You will see charts, summaries and simple comparisons to understand whether your home is a good fit for rooftop solar.
Check your rooftop solar potential in minutes
Enter your location, roof details, and monthly electricity usage. Tinh Dien Mat Troi uses solar radiation data from PVGIS by the European Commission’s Joint Research Centre to provide an initial estimate of solar generation, suitable system size, self-consumption rate, and expected payback period.
Only a few basic details
Enter your location, roof details and electricity bill
Reliable solar data
Estimates are based on PVGIS solar irradiation data
See whether it is worth installing
Review suitable system size, savings and payback time
01 · Production
Monthly solar production
See estimated solar electricity output for each month, including higher-output periods, lower-output periods and the overall yearly trend.
02 · Capacity
Recommended system capacity
Shows suggested install capacity, roof area needed, expected production and electricity demand for easy comparison.
03 · Financial impact
Savings and payback
Compare investment cost, possible bill savings, self-consumption rate and estimated payback time.
Before you start
What do you need to prepare?
Home location
Enter your address or choose a spot on the map so the tool can estimate sunlight conditions in your area.
Roof details
Provide the usable roof area, roof direction, tilt and any shading if available.
Monthly electricity usage
Enter your electricity bill or monthly electricity consumption. You can also add battery storage later if you want to compare an advanced scenario.
Key features
Focused on practical information that helps you estimate quickly, understand the results and decide on the next step.
Data from PVGIS
Production estimates use location-based solar irradiation data from PVGIS, giving the results a clearer basis.
Suggest a suitable system size
Combines roof area, roof direction and electricity usage to suggest a system size worth considering.
Compare battery storage
Quickly see how battery storage may affect self-consumption, excess energy and payback time.
Easy-to-share report
Results are presented in a simple summary with clear assumptions so you can discuss them with family or an installer.
How it works
Just a few simple steps to get an initial estimate of a rooftop solar system that may fit your home.
01
Choose your home location
Pick a point on the map or enter your address so the tool can load sunlight data for your area.
02
Enter roof details
Provide usable roof area, roof direction, tilt and any shading if available.
03
Enter electricity usage
Enter your electricity bill or monthly electricity use to estimate real household demand.
04
Get the estimated results
See suggested capacity, expected production, self-consumption, savings and payback time.
What you will get
Production
Expected production
Estimated rooftop solar production by year and by month.
Capacity
Suitable capacity
Suggested system size to consider based on roof conditions and electricity usage.
Self-use
Self-use and excess energy
Shows how much electricity may be used directly and how much may remain excess or need grid support.
Finance
Savings and payback
Estimated bill savings and expected payback time.