In conjunction with generators, I also suggest batter back-up, and battery lights.
Darkness can be from power outages, civil unrest, inclement weather damage (tornado, hurricane, etc.,) and even premeditated acts (criminal cutting power/phone lines). It does not matter if one is in a urban or rural area.
Dark is dark.
a. one should have lighting for personal safety, "risk for falls" afflicts any age , not just the elderly or physically limited.
b. deterrent.
Criminals will prefer easier prey, and if one has lighting, this sends the message, "hey these folks have taken prudent steps".
Battery only lights, such as six volt lanterns, are not just for interior uses.
One of the tricks is to take a six volt lantern battery, affix the headlight, in a "water resistant" housing and have it mounted as one would exterior lighting.
Run wires as you would, or along with electrical wiring. Now it simply a matter of attaching the terminals to the six volt battery.
I have used the inexpensive "floating lanterns", with the water resistant plastic bodies, that would float.
I drilled small holes for the wires in the lantern body, and then ran wires through, using silicon to keep water resistant. The lantern was mounted.
e.g. Shed out back, and just a matter of attaching wires to battery terminals in the shed.
No, not a lot of light, still it was light, and allowed for one to safely travel between house and shed, along with sending a message to criminals that we were taking prudent steps for safety.
Kerosene lanterns, oil lamps and Coleman lanterns
Don't laugh, these old designs are proven, and I can personally attest to their usefulness, before, during and the aftermath of tornadoes.
I use Lamp oil in Kerosene lanterns. In fact now, they have these same lanterns, designed to burn lamp oil.
Using Lamp oil in a kerosene lantern, allows one to use the lantern indoors.