Honestly, I don't recommend getting one to run your lights. The most important thing is maintaining a livable temperature, and maintaining a photoperiod. A small inverter generator will cover you for these things and you won't have to run it constantly. Look at the Wen inverter generators around this size, I've had one for a year and I love it, it's a well made knockoff of a Japanese generator and it was cheap too. Keep in mind, you're going to need a lot of gas AND oil...Also keep in mind gas goes bad, so get some stabilizer, and replenish your supply of fresh gas every year. I dump my gas cans into my car tank once per year then fill them up with fresh gas-Also, use Ethanol free gas if it's available near you. Ideally you should run the generator for 15 min every month or so to keep it in good shape. Look up a good "break in" procedure for when you first get it and follow it to the letter. If by chance you have a wood stove for heat, I would forget the generator and buy a battery "power bank" instead and get a cheap 3 watt LED to plug into it, then just hang that in your tent to maintain 12/12. Generators are good to have but you need to baby them and they are a bit of a PITA.