Ace the Certified Energy Manager Exam 2025 – Power Up Your Career Potential!

The formula used to calculate energy consumption is Energy (kWh) = Power (kW) x Time (h). This relationship is fundamental in understanding how energy is consumed in electrical systems.

In this context, energy is measured in kilowatt-hours (kWh), which quantifies the amount of electricity consumed over time. Power, expressed in kilowatts (kW), indicates the rate at which energy is being used, and time, measured in hours (h), refers to the duration for which this power is utilized. By multiplying power by time, you effectively find the total energy consumed during a specific period.

For instance, if you have a device that operates at a power level of 2 kW for 3 hours, the energy consumed would be calculated as 2 kW x 3 h = 6 kWh. This formula is essential not only for understanding energy bills but also for managing energy efficiency in various applications.

Other formulations presented do not accurately represent how energy consumption is calculated, making them unsuitable for this context.