C.R.S. § 30-28-127: Public utilities exceptions.

None of the provisions of this part 1 shall apply to any existing building, structure, or plant or other equipment owned or used by any public utility. After the adoption of a plan, all extensions, betterments, or additions to buildings, structures, or plant or other equipment of any public utility shall only be made in conformity with such plan, unless, after public hearing first had, the public utilities commission orders that such extensions, betterments, or additions to buildings, structures, or plant or other equipment are reasonable and that such extensions, betterments, or additions may be made even though they conflict with the adopted plan.