Power: energy provided per unit of time. Energy is measured in joules (J) and power is measured in Watts (W). A watt is equal to a joule per second. 1 kW = 10^{3} Watt or 1000 W 1 MW = 10^{6 }Watt or 1000 kW 1 GW = 10^{9 }Watt, or 1000 MW


Energy: power multiplied by time during which it is applied. Energy is measured in joules (J) and power is measured in Watts (W). A joule is equal to a watt during 1 second. 1 kJ = 10^{3} J or 1000 J 1 MJ= 10^{6 }J or 1000 kJ 1 GJ= 10^{9 }J, or 1000 MJ 