How do you calculate fan energy cost?

Multiply the connected motor load in kW by operating hours and the electricity price per kWh. An 18.5 kW fan running 8 hours at $0.13/kWh costs $19.24, or $3.21 per fan across 6 units.

How does static pressure affect fan power?

Higher static pressure (clogged filters, closed dampers, longer duct runs) moves the fan up its curve and increases the brake power the motor must supply, raising kW draw and energy cost. Reducing static pressure directly cuts the bill computed here.

What is the cost per fan in this calculation?

It is total energy cost divided by the number of fans or test units covered. In the example, $19.24 across 6 fans is $3.21 per fan for that 8-hour run.

How much energy does an industrial fan use?

Energy used equals motor load times hours. The example 18.5 kW fan over 8 hours consumes 148 kWh, and the per-hour cost is about $2.41 at $0.13/kWh.

Why is fan energy such a big deal?

For continuously running fans, electricity is usually the single largest lifecycle cost — far more than the fan itself. Small efficiency gains (cleaner filters, a VFD, a better operating point) compound over thousands of hours.

Should I use nameplate kW or measured kW?

Measured running kW is more accurate; nameplate is the rated maximum and usually overstates actual draw. If you only have nameplate, expect this cost to be a conservative upper bound.

Industrial Fans, Blowers & Air Movement Equipment calculator

Static Pressure Power Calculator

Static pressure power cost is the electricity bill behind pushing air against system resistance — the fan motor draws more power as ductwork, filters, and dampers raise static pressure. Energy managers, fan engineers, and maintenance planners use this to quantify the operating cost of a fan or a bank of fans and to justify dirty-filter changeouts or VFD retrofits. Fan energy is overwhelmingly the dominant lifecycle cost of air-moving equipment, often dwarfing the purchase price. This calculator multiplies connected motor load by runtime and electricity price for total energy cost, then splits it across the fans covered.

What this calculator does

Estimate operating energy cost for a fan or blower from connected motor load, runtime, electricity price, and fan count or test count.
Use it when evaluating the cost impact of static pressure, duct loss, filter loading, damper position, or motor selection.
It computes total fan energy cost from motor load, runtime, and electricity price, then divides by the number of fans to give a per-fan cost.

Formula used

Fan energy cost = connected fan motor load × fan operating runtime × blended electricity price
Static pressure power cost per fan = fan energy cost ÷ fans or test units covered

Inputs explained

Connected fan motor load:
Fan operating runtime:
Blended electricity price:
Fans or test units covered:

How to use the result

Use it to estimate operating cost for a fan or fan bank, build an energy-savings business case, or quantify the cost penalty of rising static pressure.
It uses connected motor load as a flat draw and does not model part-load operation, motor efficiency, power factor, or VFD turndown, so continuously modulating fans will deviate from this figure.

Current U.S. benchmarks

As of Apr 2026, industrial electricity averages 8.7 cents per kWh across the U.S. (EIA), up 5.5% from a year earlier. State averages range widely, so plants should confirm against their own tariff.
Steel mill PPI stands at 348.53 (BLS, May 2026), up 6.7% from a year earlier. New factory orders are up 2.3% year over year (Census).

Common questions

How do you calculate fan energy cost? Multiply the connected motor load in kW by operating hours and the electricity price per kWh. An 18.5 kW fan running 8 hours at $0.13/kWh costs $19.24, or $3.21 per fan across 6 units.
How does static pressure affect fan power? Higher static pressure (clogged filters, closed dampers, longer duct runs) moves the fan up its curve and increases the brake power the motor must supply, raising kW draw and energy cost. Reducing static pressure directly cuts the bill computed here.
What is the cost per fan in this calculation? It is total energy cost divided by the number of fans or test units covered. In the example, $19.24 across 6 fans is $3.21 per fan for that 8-hour run.
How much energy does an industrial fan use? Energy used equals motor load times hours. The example 18.5 kW fan over 8 hours consumes 148 kWh, and the per-hour cost is about $2.41 at $0.13/kWh.
Why is fan energy such a big deal? For continuously running fans, electricity is usually the single largest lifecycle cost — far more than the fan itself. Small efficiency gains (cleaner filters, a VFD, a better operating point) compound over thousands of hours.

Last reviewed 2026-05-12.