I have no need for this setup at home, we have fairly reliable mains power in the UK, and a couple of small gennies if we need short-term power for anything. The noise of a small genny running during the day isn't a problem, but I wouldn't like to have one running in the evening or at night, even if there was a power loss.
We have had two breaks in 24 years at this address.
As far as putting power into the grid goes, I have been involved with larger systems, over 100kW, that did supply power back into the local grid, but it was never economical at the rate that you were paid for the power, it was a consistent loser.
At the low power end of the scale, the economics are even worse, and I'd never recommend doing it or buying the kit to do it unless you have a cast-iron costing of the scheme that shows you coming out at break-even or better, costs for wear and tear and equipment replacement included.
For generation away from the grid it is a good option, especially if used with power storage and other means of generation such as solar and wind, but you'll never make money out of selling to a utility.
Peter