Lighting Ghee lamp before God is more Auspicious
Lamp is an integral part of every pooja in the Hindu method of worship. In fact, lighting of the lamp is the very first ritual that marks the beginning of every sacred act in Hinduism. Lighting the lamp amounts to invoking the presence of God in the site and also awakening the inner spiritual energy in us.
While oil and ghee are used to fuel the lamps, the tradition prefers ghee lamp over oil lamp during pooja. Scientifically also using ghee in the lamp is preferable. Oil is obtained from plants & its flame contains high carbon thus its flame emits carbon-di-oxide which is harmful, while a ghee flame has negligible amount of carbon content & is safe especially inside the temple or house whereas lighting an oil lamp under a peepal tree or a banyan tree is advised in some Hindu rituals.
Lighting the lamp amounts to invoking the presence of God in the site and also awakening the inner spiritual energy in us. Lightning of lamp in pooja is the first rituals that mark the beginning of every act of every sacred act of Hinduism lightening of lamp amounts of invoking of presence of god in the site and also awakening the three inner spiritual energy in us while oil and gee is used to light lamp in Hindu tradition.