EV Charging Infrastructure Manufacturing worked example

UL Compliance Workload with average compliance-test load of 45 kW: a worked example

This worked example runs the ul compliance workload numbers for a tougher week than the baseline: average compliance-test load of 45 kW instead of the typical 90 kW. Estimate energy cost for UL/ETL compliance, safety, and certification workload on EV charging equipment.

The inputs for this scenario

  • Average compliance-test load: 45 kW (the input this scenario stresses; the baseline uses 90)
  • Compliance test runtime: 40 hr (held at the documented default)
  • Lab electricity rate: 0.16 $ / kWh (held at the documented default)
  • Compliance test articles or runs: 3 tests (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Compliance workload energy cost = average compliance-test load × compliance runtime × lab electricity rate.
  • UL compliance workload energy cost works out to 288 $ at these inputs, and this is the headline figure for the scenario.
  • UL compliance workload energy used works out to 1,800 kWh at these inputs.
  • Compliance energy cost per test article/run works out to 96 $ / test at these inputs.
  • Hourly compliance workload energy cost works out to 7.2 $ / hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where average compliance-test load sits at 90 kW and the headline result is 576 $, this scenario comes in 50% below the baseline at 288 $.
  • Use it when budgeting a UL certification project, quoting in-house compliance lab time, or comparing the energy burden of test plans for AC versus DC charger lines. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • UL compliance workload energy cost: 288 $ (headline result)
  • UL compliance workload energy used: 1,800 kWh
  • Compliance energy cost per test article/run: 96 $ / test
  • Hourly compliance workload energy cost: 7.2 $ / hr

Run it with your numbers

  • To rerun this with your own numbers, open the live UL Compliance Workload calculator, set average compliance-test load to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.