We don't need super-solutions/magic bullets for electric generation. Tidal could fill in where its best suited, such as Newfoundland. Imagine if we had:

20% Nuclear (been this for decades)

25% Natural Gas (27% now)

23% Wind (4% now)

22% Solar (1/2% now)

5% Tidal (none now)

5% Hydro (6%-7% for decades)

and no coal at all. (35%-50% for decades)