ACT SOLAR · ENERGY LAB

Energy calculators and tools

Preliminary estimates, not a substitute for professional engineering design, site surveys or applicable standards.

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Solar PV Sizing

Daily use (kWh)Peak sun hours per daySystem efficiency (%)Panel rating (W)Battery autonomy (days)Usable depth of discharge (%)

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Watts, Volts & Amps

Voltage (V)Power (W)AC power factor

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Appliance consumption

Appliance wattsDaily run hoursDevice countPrice per kWh (optional)

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Air conditioning estimator

Room area (m²)Estimated load (BTU/h per m²)Efficiency / COP

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Battery runtime

Battery capacity (Ah)Nominal voltage (V)Load (W)Depth of discharge (%)Conversion efficiency (%)

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Solar pumping

Flow (m³/h)Total dynamic head (m)Pump & motor efficiency (%)

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DC copper cable voltage drop

One-way cable length (m)Current (A)Conductor cross section (mm²)Circuit voltage (V)

⚠ These simplified calculations depend on irradiation, local climate, insulation, device efficiency and real loads; seek a qualified engineer before buying or installing equipment.