Often not self propelled, some just glide without wheels, and just has electric auger to throw snow forward.

I can clear a double driveway with an electric shovel/snow thrower. It depends on the battery and, of course, the length of the driveway. But we're taking Brampton, not an estate house.

The thing is you have to do it before the snow is higher than the face of the shovel, so you might have to go out twice or even three times (while it's still snowing and once when it's done) instead of only doing one pass at the end with a significantly larger snow blower.

There are other shortcomings compared to a snow blower, such as it only throws the snow in front of itself; you can't direct it otherwise. So you have to think about how you're going to physically do the task. Also, I find it's not as effective when the snow is wet.

Overall, though, if a snow blower is not feasible for whatever reason, it's a decent option for lessening the physical burden of snow shoveling, but definitely not eliminating it.