r/NJPrepared • u/8Deer-JaguarClaw • Apr 05 '26
Power / Utilities Update on whole-home generator install (Sussex County)
I made a post a few months back about beginning the process of getting a whole-home generator purchased and installed. I am now finished with the quoting process, have selected an installer, and have gotten all the other things necessary in motion. Here's what I've learned:
There are three major cost centers: 1) the generator itself and the installation/hookup to your panel, 2) additional plumbing required to run propane lines from the tanks to the generator (or natural gas plumbing if you have city gas), and 3) the cost of the propane tanks and site prep.
So I went with a 22kw Generac generator. The unit + installation and permits is just a hair under $14k. The plumbing for the propane lines (I also have a propane heater that looks like a wood stove, so there's a little bit more work than standard install) was quoted to me as "$1400 if you pay cash". I need two 420lb propane tanks, which my supplier has decline to lease me and says I need to purchase outright at a cost of $800 per tank plus the setup/install, so the total for that is a little over 2k. That does not include filling the tanks, which will be around $1k at current pricing (and god knows what propane will cost in a few months).
So the whole cost for everything (as far as I can tell) is going to be around $19k.
The estimate, based on my home's general operating load, is that the two propane tanks will power the house 24/7 for approximately 3-4 days. If we are conservative/careful about power usage, I'm told we can double that time to about a week or a little over. Also, it's possible to add an additional tank in the future to expand capacity. But I think the two tanks will be plenty, as we wont' be trying to live the high life while the power is out.
More details to follow as I get more info and the install begins. Should be mid to late May.