1. Unit of electrical power.
  2. Unit of electrical power derived from the current (or “quantity” of electricity) multiplied by the voltage (or “pressure” at which the current is delivered). Stage lighting equipment is rated in Watts (or Kilowatts – 1 kW being equal to 1000W). This refers to the amount of power required to light the lamp. A higher wattage lamp requires more power and gives a brighter light output.