Artificial sunlight

Artificial sunlight, also known as synthetic sunlight, was sunlight given off by artificial suns.

The Sunlight Worlds were lit by artificial sunlight. (PROSE: The Dalek Generation) The Collector used six artificial suns to light Pluto. (TV: The Sun Makers)

The Daleks claimed to offer the Thals fresh vegetables that were created with synthetic sunlight. (TV: "The Escape")

The vep was a unit used for artificial sunlight. (The Dalek Book)