Estimate elevator daily and annual electricity use, operating cost, emissions, traction energy, and standby load from lift activity or measured trip energy.

Use representative measured energy and separate standby hours.

Exclude standby energy to avoid counting it twice.

Hours outside movement; enter 0 if standby is excluded.

365 is a calendar-year assumption; change it for your operating schedule.

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Elevator Energy Consumption Formula

The following formula is used to calculate the energy consumption of an elevator for a given power rating and operating time.

E = P × T

Variables:

  • E is the energy consumption in kilowatt-hours (kWh)
  • P is the average electrical input power in kilowatts (kW), not necessarily the motor nameplate rating
  • T is the operating time in hours (h)

For the power × time model, multiply average electrical input power by moving time, then add separately measured standby energy. The trip-based models instead use net moving Wh per one-way trip; the traction model is an ideal imbalance estimate that excludes friction, acceleration and auxiliary systems.

What is Elevator Energy Consumption?

Elevator energy consumption refers to the amount of electrical energy used by an elevator system over a given period. This energy consumption is typically measured in kilowatt-hours (kWh) and is influenced by factors such as the power rating of the elevator motor, the frequency and duration of elevator use, and the efficiency of the elevator system. Understanding and optimizing elevator energy consumption is important for reducing operational costs and minimizing the environmental impact of building operations.

How to Calculate Elevator Energy Consumption?

The following steps outline how to calculate the Elevator Energy Consumption.

  1. First, determine the power rating of the elevator (P).
  2. Next, determine the operating time of the elevator (T).
  3. Finally, calculate the energy consumption using the formula E = P * T.
  4. After inserting the values and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Average electrical input power (P) = 5 kW

Operating Time (T) = 3 hours. Moving energy is 15 kWh, before separate standby consumption.