kordts said:
Around here, 5 grand is probably about right.
I used to live in a place where the power went out about four times a year. The first year we moved there the power was out for four days.
I installed a backup generator and it cost about $2K. I have since moved and still have that portable generator.
If you want to go "cheap but safe," here's how I did it.
Figure that a 5000 Watt generator (That's enough for a "Greenacres" sort of thing but enough for emergencies) will run about $600. It's enough to run a refrigerator, furnace electricity, a garage door opener and a few lights.
Then you NEED a "transfer switch". What this does is isolate the generator from the power provided by the utility. Having the utility power come back on when the generator is running is a nice way to start a massive fire.
Transfer switches cost in the range of $200 to $500 for a small generator. They have the advantage that you can move power around as you need it. Say, run the refrigerator for an hour and then run power to the furnace to keep the pipes warm.
Figure that an electrician is going to work about 3 hours to install the transfer switch. So now you're looking at about $1500. Figure another $500 for "odds and ends" (like 30 Amp cables) and some battery powered emergency lights so that you can actually get to the generator and the transfer switch without killing yourself.
I kept (keep) the generator in the garage. This allows me to start & run the generator in bad weather. Of course, you need to open the garage door; but yo can safely run a small generator for a few seconds (a few minutes?) in a garage in order to get enough power to open the garage door.
When purchasing a gasoline generator (assuming you go the cheap route), make sure that the tank is large. It's a pain repeatedly filling up a small tank. My tank is 10 gallons. DON'T get a 3.5 gallon tank.