Dominion Energy proposes to squeeze a 500 kV +230 kV lines into an extremely narrow 120 foot right of way through the entirety of Stafford County, Virginia, with its North Anna Kraken loop project -- bringing the lines directly over the property of 5 schools and 864 homes in the County.  I can't find where anyone, anywhere has ever tried to do something this crazy.  Here are some examples:

Tennessee Valley Authority -

• 500kV lines commonly use a 175 or 200-foot right of way.
• "Rights of way for multiple transmission lines are generally wider."

Simcore

• "200-250 feet" with 130-160 foot towers

Georgia Transmission

• 500 kV - "100-150 feet"

Great River Energy

• 500 kV - "160 to 200 feet typical right of way width"

California Public Utilities

• ordered undergrounding of a single 500 kV powerline in a 150 foot easement that would put 200 homes within the engineered fall distance of 190 foot poles

Powerlink (Australia)

• 80 meters, or 262 feet

Duke Energy

• Carolinas -500 to 525 kV lines typically require a 180- to 200 foot corridor
• Indiana, Ohio and Kentucky - 230 kV lines typically require a 150-foot corridor
• Florida - 500,000-volt lines typically require a 170-foot corridor

Dominion Energy

• The original Arkendale project, which consists of segments 5 and 6 of the proposed Kraken route, was for a single 500kV line to be placed within a 335 foot easement, limited to a total of 750 kV within the route. Today, Dominion is trying to ram nearly 750 kV through 120 feet, next to homes and schools.
• Dominion easement guidelines require that nothing, not even landscape plants, be within 50 feet of any pole or structure it creates. 

Where the NESC does not have tables defining minimum safe distances specific distances from buildings, it instructs power companies to use Rule 012c and follow "accepted good practice".  The Kraken route clearly does not.