J have seen clubs decide to have the local utility underground a low-voltage (415 volt) or 11,000 volt line that was supplying an irrigation pump station in the middle of the course. This has occurred at Riverside in Adelaide, Australia.
My home club put in automatic irrigation 25 years ago, and had the 11kV line undergrounded. It crossed 3 holes, plus the car park and clubhouse area.
I am talking about the local district powerlines here - not the meccano style towers that carry the power across the grid at 20 to 30 times the voltage, and at significant height/clearance. The bigger the insulators on the power line, the higher the voltage, and the more expensive undergrounding is.
James B