Power Electronics, Motors & Drives calculator

Electronics Cooling Cost Calculator

Electronics cooling cost is the electricity spend to run the thermal management that keeps power electronics within their junction and ambient limits — chillers, cold plates, forced-air blowers, or burn-in chamber cooling. Facilities and process engineers on power electronics lines use it to allocate cooling overhead to each unit produced and to justify efficiency upgrades. Cooling is often an overlooked chunk of conversion cost, especially during burn-in and high-voltage soak where systems run for hours per lot. Knowing the per-unit cooling cost turns an invisible utility bill into a line item you can attack.

What this calculator does

  • Estimate electrical energy cost for cooling power electronics enclosures, inverter cabinets, drive rooms, or test areas from cooling load, runtime, energy rate, and units processed.
  • Use it when comparing fans, heat exchangers, chillers, cabinet AC, liquid cooling, or room HVAC needed to remove inverter and drive heat loss.
  • It computes total cooling energy cost from load, runtime, and rate, then divides by units to give cost per unit, per hour, and total kWh used.

Formula used

  • Cooling energy cost = cooling system electrical load × cooling runtime × electricity rate
  • Cooling energy cost per unit = cooling energy cost ÷ units cooled or processed

Inputs explained

  • Cooling system electrical load:
  • Cooling runtime:
  • Electricity rate:
  • Units cooled or processed:

How to use the result

  • Use it to cost out cooling for a burn-in run, a test cell, or a production shift, and to compare cooling scenarios.
  • It models steady electrical load; it doesn't capture chiller efficiency curves (COP), part-load cycling, or demand charges.

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.
  • The producer price index for copper and brass mill shapes stands at 559.593 (BLS, May 2026), up 76.8% from a year earlier. Quotes priced off last quarter's material cost miss this move. Global copper trades at $13,484 per tonne (IMF via FRED, May 2026).
  • The U.S. has 11,261 computer and electronic products establishments employing about 815,443 workers (Census County Business Patterns, 2023).

Common questions

  • How do you calculate electronics cooling cost? Multiply the cooling system's electrical load by its runtime and by the electricity rate. For a 12 kW system running 8 hours at $0.12/kWh, that's 12 × 8 × 0.12 = $11.52 in energy.
  • What is the cooling cost per unit? Divide total cooling energy cost by units processed. In the example, $11.52 across 1,000 units is about $0.0115 per unit — small individually but real at volume.
  • Does this include the chiller's efficiency? No. The load you enter should already reflect the actual electrical draw of the cooling equipment. It does not model coefficient of performance or part-load efficiency, so measure the real kW draw when possible.
  • How do I cut cooling energy cost? Reduce runtime (tighter burn-in windows), lower the electrical load (variable-speed drives, free cooling, higher setpoints where allowed), or shift runtime off peak-rate windows.
  • Cost per unit vs cost per hour — which should I track? Cost per unit ($0.0115 here) helps you build product cost; cost per hour ($1.44 here) helps facilities size and schedule cooling. Track both.

Last reviewed 2026-05-12.