Solar electricity calculator
Power × peak sun hours × performance ratio. Change the region to swap the default sun hours.
الافتراضي لمنطقتك. بدّل للمقارنة مع مقاييس أخرى.
النتيجة
٠ kWh
Daily yield
- Yearly yield٠ kWh
- Gross annual value٠
- PSH used٤٫٥
Site matters more than the average
NREL PVWatts and similar tools use weather files, tilt, and azimuth. This page is the envelope math for first sizing.
الصيغة
Daily kWh = kW × peak sun hours × PRYear ≈ daily × 365PR defaults to 0.75 (dust, heat, inverter)
كيف تُحسب
- Enter DC system size in kW.
- Peak sun hours default to the selected region — override if you have a local figure.
- Apply a performance ratio (0.75 is a conservative default).
الأسئلة الشائعة
What is a peak sun hour?
One hour of 1,000 W/m² irradiance. Five PSH means the day’s energy equals five hours at peak sun, not five hours of clock time.