Sun, Wind & Wood
I just found out that Sun, Wind & Wood, a 1977 NFB doc about alternative/renewable energy R&D on PEI is online. My father is featured prominently in it, and yours truly even makes a couple of cameos. Ultimately pretty grim, since we're only really starting to see the kind of investment of "social capital" in these technologies that my dad advocated as urgent forty years ago.
Sun, Wind and Wood by Dorothy Todd Hénaut, National Film Board of Canada