Houston lost several transmission towers in a storm earlier this year, causing additional widespread loss of power. Mostly in large ROWs that would be very easy and “cheap” to incorporate underground (through ditching or drilling). My work mainly encompasses coastal areas (think Miami, where power has to go from mainland substations to all the islands and port). Also, cities that want to install new substation networks in the middle of existing infrastructure, ie: substation to substation, don’t want to trench miles between them disrupting roads and existing structures. Most of our bores are between 3500’ and 9500’, typically 48-60”. Typical depths are 100-150’ on horizontal tangent, leaving the entry and exit on 12-15* depending on geology and any existing interferences. The East coast has been burying quite a bit as well (done ALOT of work in VA/DC). All the permitted offshore farms will be buried from offshore structure to inland bank. Louisiana was going to bury a bunch of their coastal lines a few years ago (likely being pushed by the LNG plants) but they scrapped that. Funding probably went to NIL or something, who knows.