Solar Insight — Free Residential Solar Rooftop Design Tool
Design your home Solar PV system in 3-5 minutes. Enter your monthly electricity bill, roof area, and direction — get optimal kWp sizing, panel count, cost estimate, and payback period. Built by LEONICS engineers using real Thai irradiance data.
Loading...
⚐ Opens in new tab · Hosted on Google Apps Script · No login required · Your data is not stored by LEONICS
Design a solar system in 4 steps
Solar Insight uses real engineering equations and Thailand-specific solar irradiance data to produce accurate sizing.
Enter your data
Monthly electricity bill (THB), available roof area (m²), roof direction.
Tool calculates
Engineering equations + Thai irradiance data → optimal kWp.
Review results
kWp size, panel count, cost, energy savings, payback period.
Get a real quote
Contact LEONICS — engineers will schedule site survey and custom quote.
Detailed system design output
- Recommended kWp sizing based on your bill and roof area
- Estimated number of solar panels (450W typical)
- Cost estimate + investment calculation
- Payback period (ROI) — typical 4-7 years
- Estimated CO₂ reduction per year
- Downloadable PDF report to share
Who is Solar Insight for?
Designed for homeowners and small business owners considering rooftop solar but without solar engineering background.
- Detached homes (1-3 floors)
- Townhouses
- Vacation homes & workshops
- Small commercial buildings
- Homes with monthly bills > 3,000 THB
Launch Solar Insight now — Free
Loading...