“They will disconnect you if there is a power generation shortage. When the demand for power is more than the maximum generating capacity , ordinary homes will be disconnected to save electricity for essential users like hospitals ,vital industry and military bases.”
Many, many homes will be disconnected in the event of power shortages, Eddie. You may recall in the 1970s when power cuts were common that large areas were disconnected periodically. The energy companies do not need to cut power supplies on a house by house basis; they can disconnect large areas at a time (at sub-station level) and do not need Smart Meters to do so. The one thing Smart Meters will facilitate (and what the paper in your link explains) is actually the precise opposite to your contention. If mass cut-offs are necessary, vulnerable and priority customers will be able to be excluded from those outages by virtue of Smart Meter programming.
As has been mentioned (and as was confirmed during the recent scaremongering stories in the press) when gas supplies are threatened it is large industrial consumers who will be hit first.