If you remove a noticable portion of the power generation, fuel reserves will be run down and depending on how many hours of power are lost per day, these place

If you remove a noticable portion of the power generation, fuel reserves will be run down and depending on how many hours of power are lost per day, these places may not be able fully charge their UPSs each day. Look to South Africa. They underinvested in their power generation for a few decades, and soon rolling blackouts became common and increased in frequency and severity to the point now where having no power each day is the normal (and it will only get worse from here)!