Revelation 21:23

Evidently there will be no sun and moon (and stars) in the new heaven because God’s glory will illuminate the whole earth (cf. Isaiah 60:19). The need for created light sources will end when the Creator Himself lives among His people. God illuminated the camp of Israel with His presence in the pillar of fire, and He lit the holy of holies with His presence between the cherubim. He will similarly dispel all darkness of all kinds in the new city. The Lamb is the radiance of the Father’s glory (Hebrews 1:3), but the Father is also the light (Revelation 22:5).

"It truly will be the Jesus Christ Light and Power Company then." [Note: McGee, 5:1072.]