We're considering a whole-house generator, but they're pricey--maybe in a few years. It would be powered by natural gas, or possibly both NG/regular gas
i will NEVER regret investing the money in one.
we don't deal with hurricanes but wind and/or snow storms have had us without power and water (we are on well) multiple times of a week or more. we don't have our hvac hooked up but with a well insulated home you can maintain a comfortable temp, despite below zero weather with a small gas fireplace-so long as it has even a small blower in it. we have our well pump, gas heater, stove/oven, microwave, fridges/freezer, hot water heater, lights/internet/landlines which allows us to stay home b/c we've learned that generators at stores are not designed to go for more than a couple of days so their foods spoil if they are even able to operate (cash registers were down during a couple of outages so they couldn't process purchases so they just closed), generators at hotels fare a bit better but they will shutter the laundry so don't plan on clean linens/towels or the washer/dryers to launder the suitcase you brought with you (their hot water heaters also don't heat as efficiently so tepid becomes the norm pretty quickly).
we always have extra food on hand,
2 extra weeks of meds (pharmacy computers/doctor's offices lost power too so refills were hard to get processed),
i keep a copy of every household member's medical insurance card accessible as well as the number to/policy number for our homeowner's insurance company
Finding ways to stay warm with no power was a new twist after a hurricane
consider investing in one or two small pop up tents. think about how when you camp in one outside, no matter how chilly it gets outside-your breath starts warming the air in the tent such that it can become sauna like. if you get a couple that can be set up ideally in a room where the sunlight (if any) can shine on the tent through a window during the day then the tent will absorb and retain the heat (keep it zipped closed).