Solar estimate

CityMonthly consumption (kWh, from your bill)Roof area (m²)System type

Assumptions (editable)

system_losses_pct (%) PVGIS user manual §4.1 'System loss': 'for the grid connected system we propose a default value for the system losses of 14%' — source (2026-10-12)offgrid_performance_ratio (ratio) PVGIS user manual (off-grid): 'we use a value a performance ratio of the whole off-grid system of 0.67' — source (2026-10-12)panel_w (W) design assumption, not a market claim: replace with the chosen module's datasheet ratingpanel_area_m2 (m²) design assumption: replace with the chosen module's datasheet dimensions (+ spacing)inverter_ratio (kW AC per kWp) design assumption: inverter AC rating relative to array DC ratingautonomy_days (days) design assumption for off-grid/hybrid storagebattery_dod (ratio) design assumption: usable depth of discharge of the chosen battery (datasheet)