Warehouse electricity cost calculator
Build a monthly warehouse electricity estimate from energy use, peak demand, tariff charges, and fees. The default represents a regional warehouse scenario and is not a national benchmark.
Commercial electricity bill
of this estimate comes from the highest measured interval, not total energy use.
Example bill for a 21,000 kWh warehouse
A warehouse using 21,000 kWh at $0.12/kWh with a 74 kW billed peak at $18/kW, a $95 fixed fee, and 4.5% in taxes and riders produces an illustrative monthly estimate of approximately $4,125. The demand portion is about $1,332, making the timing of charging and equipment operation important in this scenario.
Warehouse type changes the energy profile
A non-refrigerated storage building with limited occupancy can be dominated by lighting and seasonal HVAC. A distribution center may add conveyors, sortation, dock equipment, office loads, and battery charging. Cold storage requires a different model because compressors, evaporator fans, condensers, defrost, and door infiltration can create continuous energy use and large peaks.
The U.S. Energy Information Administration’s Commercial Buildings Energy Consumption Survey groups refrigerated and non-refrigerated warehouses together in some national tables. That makes CBECS useful for broad context but not a substitute for interval data and the specific warehouse’s operating conditions.
Build a load inventory before choosing projects
| System | Energy question | Demand question |
|---|---|---|
| Lighting | How many fixtures and operating hours? | Are all zones on during the facility peak? |
| HVAC and fans | What changes with weather and shifts? | Do morning starts overlap with other loads? |
| Charging | How many kWh are delivered per shift? | How many chargers run simultaneously? |
| Automation | What is productive versus idle runtime? | Which motors and conveyors start together? |
High-value checks for warehouses
- Graph at least one month of 15-minute or hourly demand data.
- Compare occupied, unoccupied, weekday, and weekend baseload.
- Map lighting controls to aisles, docks, offices, and daylight zones.
- Sequence material-handling and vehicle charging where operations allow.
- For refrigerated buildings, review door-open time, defrost schedules, and compressor staging.
The Department of Energy notes that commercial and industrial LED lighting can be paired with dimming, programming, demand response, and occupancy sensing. Evaluate lighting quality, safety, controls, rebates, and actual operating hours rather than relying only on lamp wattage.
Frequently asked questions
What drives warehouse electricity cost?
Lighting, HVAC, fans, office areas, dock equipment, conveyors, automation, battery charging, and refrigeration can all contribute. The dominant load depends on building use, climate, shifts, and whether the warehouse is temperature controlled.
Should warehouse energy be compared per square foot?
Energy per square foot can be a useful screening metric, but it does not normalize for operating hours, ceiling height, climate, refrigeration, automation, throughput, or occupancy. Compare the same building over time before treating an external benchmark as a target.
Can forklift or EV charging create demand charges?
Yes. Several chargers operating together—especially while HVAC, conveyors, refrigeration, or other large loads are active—can increase the highest measured demand interval.