Abstract: A modular lighting system includes a line of lighting fixtures with various body, lens, lamping system and mounting system alternative configurations, types and sizes. Many of the lighting system components are interchangeable among the different lighting fixtures. Others of the lighting fixture components can be fabricated by providing a blank with a certain configuration, (e.g., a hemispherical body) and separating it into one or more components forming portions thereof. A method of forming such modular lighting fixtures includes the steps of providing such interchangeable components and providing other components which can be formed from common blanks, mounting such fixtures with various mounting fixtures and lamping such fixtures with various electrical lamping systems.