Use your average daily electricity consumption to estimate a starting solar array size. The calculator rounds panel quantity up to whole panels and shows the resulting installed DC capacity and estimated daily generation.
Formula and assumptions: required array kW = daily kWh ÷ (peak sun hours × performance fraction). Panel count = round up(required kW × 1,000 ÷ panel watts). Estimated generation = installed rounded kW × peak sun hours × performance fraction. The default 4.5 peak sun hours is illustrative; use location- and design-specific information for a real assessment.
Household example: at 10kWh/day, 4.5 peak sun hours, and an 80% performance factor, the energy model needs about 2.778kW. Using 550W panels rounds up to six panels, or 3.3kWp DC. The same assumptions give 11.88kWh/day of estimated generation from that rounded array.