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Commercial Load Factor Calculator

Starting values are hypothetical. Replace them with your own figures. Inputs stay in this browser and are not included in the energy inquiry.

  • Use elapsed billing hours, not only business operating hours.
  • Use measured peak when available and disclose any billing-demand substitution.

Match the meter and measurement period

Take consumption and measured peak demand from the same meter and billing interval. A peak from one month cannot support a load factor using a different month’s consumption. If the bill lists adjusted billing demand as well as measured demand, identify which figure you are using. Ratchets or power-factor adjustments can make billed demand different from the observed maximum.

Enter all elapsed hours, including nights and closed days. A thirty-day period commonly contains 720 hours; a thirty-one-day period contains 744. For annual work, a non-leap year has 8,760 hours and a leap year has 8,784. Use the actual measurement convention when a utility interval crosses a daylight-saving transition or has irregular read dates.

How load factor is calculated

Average demand equals period kWh divided by period hours. Load factor equals that average demand divided by measured peak kW, multiplied by one hundred. The equivalent formula is kWh divided by peak kW times period hours, multiplied by one hundred. Peak and hours must both be greater than zero, while zero consumption yields a zero load factor.

A hypothetical account consuming 72,000 kWh with a 200 kW peak over 720 hours has average demand of 100 kW and load factor of fifty percent. Sustaining the peak for the entire period would require 144,000 kWh. If the same inputs implied average demand above 200 kW, the data would be inconsistent and the tool would ask you to check the period or units.

What a high or low result can tell you

A comparatively low result can indicate sharp peaks, short operating hours or a seasonal load pattern. A high result indicates more sustained demand relative to the observed maximum. Neither establishes that a building wastes energy. Continuous process facilities and businesses that operate only a few days each week naturally have different profiles.

Compare the same account over time and review interval data to identify the peaks. Ask what equipment operated together, whether a control schedule changed and whether the highest interval occurs in a billed demand window. Increasing consumption merely to increase load factor would not itself improve the business outcome; the goal is to understand use and cost drivers.

Connect the profile to a tariff review

Demand-charge implications depend on the account’s actual rate structure. The demand-savings tool prices a change in billed kW, while the peak-demand estimator illustrates a simple floor or ratchet. Use those only after understanding how the tariff converts measured demand to billing demand. A load factor calculation cannot infer that relationship.

Keep bills and the relevant interval export with the result, including the hours and whether peak demand was measured or adjusted. For a portfolio, calculate each meter separately before drawing conclusions. Combining nonsimultaneous site peaks can create a different measure from a single facility load factor and should not be labeled as the same calculation without explanation.

Sources & scope

Primary references reviewed October 15, 2026. These sources support the stated concepts; actual tariffs, program rules and signed agreements govern the account. Decision examples and operational worksheets are original educational analysis.

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