I think you are willing to invest in solar panels, battery bank, and inverter. Then, you should put the panels outside under the Sun, and use the power to run your growroom. I mean if your gonna spend the money, why run it inefficiently in the growroom.
yea i agree here because solar tech is expensive so you might aswell go all out and get a full system for your house especially with those intriuging rebates they have these days that bring the cost down to virtually nothing compared to what you WILL save and what you WILL make generating electricity for your own utilities company, its a nice gig. there is someone down the road who has a little solar farm probly half the size of a football field and makes a check around 10k$ a month from his utilities company for the energy he makes for them, now im not sure if this is actually 10k cash or 10k credit. dont know the payment details or the currency in which its paid out but i just know its around 10k a month. its worth looking into.