Engineering Tools

Preliminary sizing and estimation tools.

Quick, directional calculations to help you scope a project before a full technical assessment.

Preliminary engineering estimate only. Final system design requires site assessment, technical validation and equipment-specific engineering.

Estimate an approximate PV array size from your daily energy use.

Average Daily Consumption (kWh)

Average Peak Sun Hours

System Losses (%)

-- kWp

Approximate PV array size needed to meet your stated daily consumption, before shading, orientation and equipment-specific losses are assessed.

Estimate battery capacity required for a target backup duration.

Critical Load (kW)

Backup Duration (hours)

Depth of Discharge (%)

-- kWh

Approximate usable battery capacity required to cover the stated load for the stated duration.

Estimate how long an existing battery bank will run a given load.

Battery Capacity (kWh)

Connected Load (kW)

Depth of Discharge (%)

-- hours

Approximate runtime at the stated load, before inverter efficiency and real-world battery behaviour are accounted for.

Rough conductor cross-section guide based on current and run length.

Load Current (A)

One-Way Cable Length (m)

System Voltage (V)

-- mm²

Indicative minimum cross-section for acceptable voltage drop. Final selection must follow applicable wiring regulations and derating factors.

Need a validated engineering design?