CANDU are a great design; the calandria is a nice adaptation to the capabilities of Canadian maufacturing, and it is impressive to see the lines of reactors at Bruce, Pickering and Darlington. It is also a widely exported design, with China constructing reactors on a 4 year timeline. Granted a single large reactor would dominate the grid, but I presume there is grid connectivity to adjacent provinces. An alternative would be a large energy user (aluminium, heavy water production) to soak up the excess power and turn down when one unit comes offline.