solar tool
Solar Panel Size Calculator
Estimate required solar array size from daily energy, peak sun hours, and system efficiency.
This is an early-stage estimate. Actual output varies with orientation, shading, weather, temperature, equipment, and installation conditions.
Required solar array size
2.5 kW
Required kW = daily kWh ÷ (peak sun hours × efficiency fraction).
Important assumptions
This is a planning estimate, not a guarantee of performance. Real equipment varies with temperature, age, power quality, duty cycle, wiring, and manufacturer specifications.