Costs are huge in rocky ground to bury high voltage wires. Low voltage (120 to 240) is less. This deals with it. https://en.wikipedia.org/wiki/Undergrounding ht

Costs are huge in rocky ground to bury high voltage wires. Low voltage (120 to 240) is less. This deals with it. https://en.wikipedia.org/wiki/Undergrounding https://en.wikipedia.org/wiki/Undergrounding The largest barrier to safe rural wiring in California is the huge wage, benefits and pension costs which is on the order of $80-100 per hour, a position that politicians reached because the politicians did not care as long as they paid themselves very well. Huge areas are running huge unfunded pension positions cause by the lack of laws mandating 100% funding of all pensions every fiscal year end. Some states have these laws. These places are balanced and have lower pensions because the politicians were stiffened. Look at Detroit, Chicago and many others - dead men walking...