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Peak Sun Hours and Irradiance Integration

Convert daily solar irradiation into equivalent peak-sun-hours or integrate measured irradiance intervals; preserve the actual plane and period.

Use this result well

Inputs that matter
Daily average solar energy (kWh/m²/day), Days represented, Measurement plane, Sources and assumptions, and 1 more
Output to expect
Daily and period peak-sun hours, Solar energy from irradiance intervals
  • Check the units and required inputs before comparing results.
  • Keep the assumptions with a copied result so you can reproduce the calculation later.
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Reference & details

How it works

Daily and period peak-sun hours

Convert documented solar irradiation into equivalent peak-sun hours on its actual surface plane. Keep the represented day count and horizontal or array-plane basis explicit.

PSH/day = daily kWh/m² ÷ 1 kW/m²; period irradiation = daily average × days.

Solar energy from irradiance intervals

Integrate nonoverlapping interval-average irradiance on one surface plane. Include zero-irradiance periods when describing a complete day; incomplete samples represent only their own duration.

Irradiation kWh/m² = Σ average W/m² × hours / 1000; reference PSH has the same numeric value.

Updated: September 2026

Example Scenarios

Try this example to see the calculation, then enter actual documented values and preserve the measurement conditions. A failed or unresolved comparison is part of the record.

→ 5.2 PSH/day

Try this example to see the calculation, then enter actual documented values and preserve the measurement conditions. A failed or unresolved comparison is part of the record.

→ 5.2 PSH over 24 hours

FAQ

Convert documented solar irradiation into equivalent peak-sun hours on its actual surface plane. Keep the represented day count and horizontal or array-plane basis explicit. Integrate nonoverlapping interval-average irradiance on one surface plane. Include zero-irradiance periods when describing a complete day; incomplete samples represent only their own duration.

Use the exact equipment data, measurement point, operating conditions and units described in the selected mode. Record source documents, dates and unresolved conditions in Sources and assumptions. Built-in examples illustrate arithmetic; they are not manufacturer ratings or approved designs.

Use Save planning case for an explicit local history entry. Copy MD keeps current inputs and notes; Download CSV exports the result breakdown. Export portable copies before clearing storage and save a separate case after changing equipment, conditions or measurements.

About Peak Sun Hours and Irradiance Integration

Convert documented solar irradiation into equivalent peak-sun hours on its actual surface plane. Keep the represented day count and horizontal or array-plane basis explicit. Integrate nonoverlapping interval-average irradiance on one surface plane. Include zero-irradiance periods when describing a complete day; incomplete samples represent only their own duration.