Meaning of SOLAR in English
[adjective] [before noun; not gradable] - of or from the sun, or using the energy from the sun to produce electric powersolar radiationsolar flaresa solar cell/panelsolar heatingSee picture: EnergyThe solar system is the sun and the group of planets which move around it.(specialized) The solar year is the time it takes for the Earth to go round the sun, just over 365 days.
Cambridge English vocab. Кембриджский английский словарь. 2012