Inputs

Annual electricity use kWh/year Enter a numeric project value in kWh/year at or above 0. Energy tariff $/kWh Enter a numeric project value in $/kWh at or above 0. Fixed annual charge $/year Enter a numeric project value in $/year at or above 0. Lighting demand allocation kW Enter a numeric project value in kW at or above 0. Demand rate $/kW-year Enter a numeric project value in $/kW-year at or above 0. Add GST to subtotal Tick when this condition applies or the record is available.

Energy cost -- $/year

Demand cost -- $/year

Fixed charge -- $/year

GST amount -- $/year

Calculation details

Energy cost: -- $/year
Demand cost: -- $/year
Fixed charge: -- $/year
GST amount: -- $/year
Annual operating cost: -- $/year

Important notes

Check the actual retailer tariff, network charges, demand allocation, GST treatment, and effective dates before using results in a budget.
This operating-cost estimate is not financial advice, tariff advice, electrical approval, or an Australian compliance claim.

Formulas

$\displaystyle C_E = E \times T$
$\displaystyle C = C_E + C_D + C_F + GST$
Tariffs and charges are user inputs or dated source assumptions, not hardcoded values.

Estimate annual lighting operating cost from kWh, tariff, fixed charges, demand charges, and GST setting.

Lighting Operating Cost Calculator is a planning aid. Keep the target source, product data, measurement method, and project assumptions with the result. Confirm compliance, installation, certification, and safety decisions with the responsible professional.

Inputs

Results

Formulas