# Calculating Electrical Energy consumption & kWh

Last updated on May 12th, 2023 at 11:12 am

Some electric utility providers measure energy in units of **kWh**. This is a non-SI unit, but it *makes sense for energy delivery.*

If power is energy/time, then energy is power × time.

So, Electric Energy consumption = Electric power x Time

**So kW⋅h is a valid measure of energy. **Here, electric power is measured in kW (kilo Watt), and time duration is measured in hours. Hence, the energy unit used to measure or calculate Electrical Energy consumption is kiloWatt-Hour or kWh.

**Know more about** kWh – commercial unit to measure electric energy consumption.

**Sample Calculation of electrical energy consumption in kWh**

If you run your 100 W light bulb for 20 h, you’ll use 100 W × 20 h = 2000 W⋅h = 2 kW⋅h of energy.

If you run a 1.5 kW electric gadget for 4 hours, then electrical energy consumption is calculated in the following way:

Electric Energy consumption = Electric power x Time= 1.5 kW x 4 hrs = 6 kWh.

**kWh FAQs**

- 1 kWh is equal to
**36 x 10**^{5}Joules - 1 kWh is equal to how many joules:
**36 x 10**^{5}Joules. - kWh is the unit of
**Energy** - kWh full form:
**KiloWattHour** - kWh to MWh: 1 kWh = 0.001 MWh
- kWh formula: E = P t where E is in kWh, P is in kiloWatt, and t is in hours.
- kWh to joules: 1 kWh is equal to 36 x 10
^{5}Joules

kWh – commercial unit to measure electric energy consumption. – You may Read this post.