About this App
Our Solar Panel Calculator app lets anyone size a system, gauge savings, and understand solar—without spreadsheets, sales calls, or guess-work.
Key features
• Location-smart sizing – Pick your country or enter custom “sun-hours” and the app adjusts automatically for local irradiance.
• Flexible inputs – Enter consumption (day / month / year), bill-offset %, panel power, panel dimensions, roof area, and environmental derate factor.
• Instant results
Solar array size (kW & W)
Number of panels required
Roof area needed (m² / ft²)
Clear pass / fail roof-space message
• Unit toggles – Switch between kW↔W and m²↔ft² with one tap.
• Save to History – Store unlimited runs, review them later in a dedicated History modal, and clear all with a single button.
• Interactive Info Guide – A built-in, easy-read primer covering:
How PV works, panel types & efficiency
Costs vs. payback, incentives, storage, recycling
Grid-tied vs off-grid, latest tech, myths & facts
• Comprehensive FAQs – Quick answers to installation time, maintenance, roof direction, off-grid options, batteries, smart meters, storms, and more.
• Dark-mode-friendly design – Crisp typography, accent colors, and smooth modals fit right into modern devices.
Whether you’re a homeowner, installer, or just solar-curious, our app puts the essentials—size, panels, roof area, knowledge—at your fingertips in seconds.
