Around 5,600 hydro customers across the province were without power as of 1 p.m.
Hydro-Québec spokesman Francis Labbé says isolated thunderstorms were leading to new outages in several parts of the province.
Public safety officials also requested power cuts in Montreal Sunday morning that affected 8,000 customers, though power was restored to all but 450 by 1 p.m.
Labbe says he doesn’t have specific information about why the cuts were requested, but notes they’re usually triggered by gas leaks or cars hitting hydro polls.
More than 392,000 hydro customers lost power during Thursday’s storm.