Produced a third of our electricity, but soon it’ll be blown away by wind
Coal has always produced the most electricity for the grid, compared to other sources, until a few recent months when coal was temporarily surpassed by natural gas. That's what the panelist said, in a seminar last week about electric utilities.
It's true that coal has led. But hydro ran neck and neck with coal well into the 1930's. And up until 1947, hydro produced over a third of the grid's electricity.