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Are you sure about this, John? – pumping …

Comment posted Water Resources (Scotland) Bill introduced – issues arising by Robert Wakeham.

Are you sure about this, John? – pumping & generating at the same time doesn’t seem to make any sense, and building a bigger dam seems highly improbable, as 10% of the reservoir replenishment comes from feeder canals tapping streams around the mountain – and they’d be too low if the dam was higher, whereas there doesn’t appear to be room to enlarge the reservoir by building a new dam significantly ‘downstream’ from the existing one.
It’s designed to sell power to the grid at times of peak demand, and replenish the reservoir by using cheap off-peak power to drive the turbines as pumps. Apparently it also provides an almost instant (2 minutes from standing, 30 seconds if spinning) emergency power supply to the grid to ‘kick start’ any other power stations in the event of a major shut-down preventing them from drawing the electricity from the grid that they would need to power-up again.

Robert Wakeham also commented

  • ‘since all modern stations use the pumped return system’ – if this is a suggestion that pumped storage is the order of the day, I’d be surprised because a good few recent hydro power projects seem to have been ‘run of the river’ which, by definition, can’t be pumped storage.

Recent comments by Robert Wakeham

  • ForArgyll on Pause
    It’s Buckfast, not buck fast – and is named after a Benedictine abbey (also known locally in South Devon as ‘Fast Buck Abbey’).
  • New Transport Minister humiliates CalMac MD
    If a second ship was added to the Craignure route because the Isle of Mull couldn’t cope with the traffic, it’ll be interesting to see what happens when she’s on her own again.
  • ForArgyll on Pause
    Salem? Really? – Would that be Salem near Llandeilo or Salem near Aberystwyth? – are you sure they’re not moving on to Mull just to get away from you?
  • With Heb Isles in for repairs, CalMac charters replacement vessel to reduce underprovision for Islay
    For Nigel MacLeod: given the current ‘pause’ in this website’s customary wide coverage, the way in which the discussion under this particular topic has spread to cover all things Calmac is surely not in the slightest bit surprising – and if particular issues arise concerning Islay service provision I’m sure that people will be keen to add their comments.
    For myself, I’d be really interested to hear the reasons for the recent ‘crash landing’ at Lochmaddy, and to see whether lessons can be learnt, given that there was what appears to have been a similar incident at Kennacraig not that long ago and it’s surely reasonable to assume that lessons were learnt then.
  • With Heb Isles in for repairs, CalMac charters replacement vessel to reduce underprovision for Islay
    That’s her just passing Peterhead on the way home.

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