LOCAL ENGINEERING ESTIMATE

Lighting energy cost

Estimate input energy and cost for a constant daily operating schedule.

FORMULA & LIMITS

Understand the model

kWh = W × quantity × hours/day × days / 1000

Use input power including driver losses. Demand charges, taxes, variable tariffs, standby use and maintenance are not included. Currency values are not converted.

Changing an input invalidates the previous result. Check units before calculating again.

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