9. What do the terms PV, Watt, kWh and Watt peak mean?
PV is an abbreviation of the word PhotoVoltaic, which refers to photovoltaic conversion – the production of electricity from sunlight.
Watt is a unit of power. kWh is 1,000 Watt per hour. A kilowatt-hour is defined as the work that is performed, or the energy that is used, to supply one kilowatt (1,000 Watt) for 1 hour. Watt peak, or Wp for short, is the unit used by manufacturers to indicate the capacity of a solar panel under ideal conditions (Standard Test Conditions – 1,000 W/m2 irradiation, 25 °C panel temperature, light spectrum AM1,5).