Lighting Load Estimator

What does the Lighting Load Estimator calculate?

It totals connected lighting load (watts and kW) and estimates annual kWh use based on your operating hours.

Do I need to enter each fixture?

No, you can enter fixture types and quantities by area for a quick baseline.

Can I use weekly hours or daily hours?

Yes, you can enter weekly hours. The tool converts this to annual use automatically.

Does it account for demand charges?

Yes, the kW figure helps you estimate potential demand impacts if your utility charges for peak demand.

Is this a certified audit?

No, it’s a planning guide. For official energy audits, you’ll need a professional assessment.

Can I compare areas separately?

Yes, enter each area’s fixtures and hours. The totals will show combined and per-area results.

Does it show cost?

Yes, enter your $/kWh rate to see the annual cost of each scenario.

What if I don’t know my hours?

Use an estimate based on shift schedules or operating policies. You can refine later.

Does it include HVAC savings?

No, it focuses on lighting load. Indirect HVAC savings can be considered separately.

Does it store my results?

No. Save or print your session for records.

Can I change between watts and kilowatts?

Yes, totals display both watts and kW automatically.

Who should use this tool?

Facility managers, contractors, and businesses planning a retrofit who need a quick baseline.