V = volt (spenning) A = ampere (strøm) W = watt (effekt) kV = kilovolt (1000 volt) kW = kilowatt (1.000 watt) kWh = kilowattime (energi) MW = megawatt (1.000 kW) MWh = megawattime (1.000 kWh) GW = gigawatt (1.000.000 kW) GWh = gigawattime (1 mill. kWh) TW = terrawatt (1.000.000.000 kW) TWh = terrawattime (1 mrd. kWh)