I live in an 84 year old house with a detached garage (common for the period). Had a power outage, and so couldn’t open the garage door. No other doors on the garage, so I had to remove a window from the outside, climb in and open the door manually.

After the second time that happened, I installed a battery powered opener. Still plan to install a cable release on the outside, just in case.

Getting too old to be climbing through windows ;(