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On a more positive note, my noble friend Lord Fuller should take heed. National Grid is undergrounding part of the overhead power lines between the Bryncir and Trawsfynydd substations in Gwynedd. So there is hope that it can do this and that the great grid upgrade will take account of the reduction in the relative cost of undergrounding. Although I cannot give accurate details of the relative cost of undergrounding, I do believe that it has come down substantially from a few years ago, when it was 10 times the cost, to more like three times the cost. It is still at a premium but, in certain circumstances, it must be well worth considering.