Solar Panel Energy Needs Calculator

Purpose:
Estimate required solar system size, panel count, and annual production for pre-feasibility analysis with physically correct assumptions.

1. Electricity Consumption

Input Type *

Energy Usage *

kWh per month

2. Location Solar Resource

Peak Sun Hours (PSH) *

Average PSH per day at your location (user-entered)

3. Panel Specification

Panel Rated Power (W) *

Single panel wattage

4. System Losses

Total System Loss (%) *

Inverter, wiring, dirt, temperature (typical: 15-30%)

5. Target Solar Offset (Optional)

Solar Offset (%)

% of total usage to be covered (default: 100%)