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View Diary: Energy from the Moon (165 comments)

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  •  Nova Scotia! (4.00)
    Dont forget there is a tidal power plant in Anapolis Royal in Nova Scotia.  If you're ever there on vacation, they have free tours and a small museum.

    Unfortunately, I'm not that optimistic on tidal power in general.  There are very few places in the world with large enough tides to make tidal power realistic.  The Bay of Fundy has the largest tides in the world, but even there it is unlikely to be the major power source.  But every little bit helps.

    •  5 or 6 knots is what the new turbines are (none)
      optimized for. So you really don't need super strong currents or huge tidal ranges as with barrages.

      "The bicycle, the bicycle surely, should always be the vehicle of novelists and poets" , Christopher Morley

      by Chris Kulczycki on Fri Nov 11, 2005 at 05:55:59 AM PST

      [ Parent ]

    •  I'm in NS as well (none)
      I was just going to mention the Fundy as a potential source of power. There is currently a project underway that hopes to be generating electricty in 5 or 6 years near Truro.
      •  Fundy also shows what can go wrong (none)
        In 1968 the province of New Brunswick built the Petitcodiac Causeway upriver from Moncton.  In effect this was similar to what a barrage setup would do in that it acted as a dam.

        The end result was a disaster.  The tide, flowing upriver, was stopped dead and could only squeeze though the narrow openings.  The resulting ponding of water allowed sediment, normally held in suspension by the sloshing of water back and forth, to settle.  At Moncton the river, which averaged a kilometre wide, is now down to less than 100 metres and the tidal bore, once world famous and up to two metres high, is a few centimetres at best.

        A tidal dam would have had the same effect.

    •  Tidal power and whales (4.00)
      The NS Power website has this summary of the tidal power plant: Annapolis Tidal Power Station.

      A couple of summers ago the station was disrupted when a young whale swam up through the gates on the incoming tide. It stayed in French Basin, above the causeway, for a couple of months, dining on astonished Annapolis River fish and cavorting for the crowds that lined the shore. It was sort of an interesting way to knock a power plant offline.

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