Practical problems to accept roof top solar power

I feel there are many practical problems associated with Solar Power units from Rooftop Solar units as the power production:

Our low voltage distribution network is unstable & very frequently it is shut down.
All grid feeding solar inverter works by following the frequency available on the connected line.
In case of backside shutdown, whom will they follow? maybe they have to also shutdown themselves.
In case it is not properly followed & rooftop goes for the feed into the grid, the whole grid load will on that little chap.
Suppose, line is shut down for the maintenance, someone is feedback to grid, who will protect maintenance people from the back voltage.

Like this there are many more technical issues to be resolved & then only it can be implemented.

I feel at present best option is to use by generation point or store in battery (with inverter) to be used at night. There has to be efficiency management of this generated power from solar panel to the last end. Whoever does it better with intelligence, will able to provide gulch free 24x7 power. As such we have developed very high efficiency solar inverters for different applications.