ELECTRICAL ENERGY AND POWER

Electrical energy.
If an electric current (I) flows at a particular tension (V) for a certain amount of time (t), we can calculate the energy (E) that is consumed: E= V x I x t.
The electrical energy is measured in joules (J).

Electric power.
The electric power of a load is the amount of energy that it can transform over a certain amount of time. Electric power is measured in watts (W) or kilowatts (kW).
If an electric current (I) flows at a particular tension (V), we can calculate the power (P) that is consumed: P= V x I
If we knowthe power of a load, we can calculate the electrical energy that it consumes over a certain amount of time:
 E= P x t