Yea really depends on where you live, what times of the year you want to use it, what strains your growing, what it’s made of, etc... Not enough details for a proper answer.
Electricity for fans maybe even heating if you wanna run in cold climate winter like the pros not sure what it would run I wanna build a DIY powerless setup myself
ive always been interested in seeing the setup of a greenhouse that also uses lighting however im not sure how it could be done without mechanical aid (moving parts) as the reflectors are large and would block the sunlight
but i wonder what kind of cannabis would come from a greenhouse grown with HPS boosted on top