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  1. Wildbairn

    EHV power lines underground - Costs vs Surface

    Thanks Marmite, much clearer, sorry to be a pain, so is that why every windfarm I see has 2 or more turbines not working? Is this because if one stops another is booted up, so to speak, to maintain level of supply to the feeder station & grid. Surely it would be more sensible to tap into the...
  2. Wildbairn

    EHV power lines underground - Costs vs Surface

    So how do windfarms work? Surely each "wind-farm" has a transformer or substation and not one on each turbine? And underground cabling have shunt reactors to absorb & control voltage, do turbines not work in series? Additionally there are already a network of Transfer stations,along the route...
  3. Wildbairn

    EHV power lines underground - Costs vs Surface

    Cheers Bacon4life The reason I ask is that due to the cost of offshore windfarms and the underwater cable & connectors, and the issues over planning onshore wind-farms, whether it would be feasible, if slightly more expensive to replace OH transmission lines with underground cables, and put up...
  4. Wildbairn

    EHV power lines underground - Costs vs Surface

    The majority of cost seems to be in set-up i.e. hiring & transporting plant etc. What would be the effect of economies of scale if the length was 220km rather than 15km or even 2200km?
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