Not later than January 1, 2008, and annually thereafter, each electric distribution company shall submit to the Public Utilities Regulatory Authority a plan for the maintenance of poles, wires, conduits or other fixtures, along public highways or streets for the transmission or distribution of electric current, owned, operated, managed or controlled by such company, in such format as the authority shall prescribe. Such plan shall include a summary of appropriate staffing levels necessary for the maintenance of said fixtures and a program for the trimming of tree branches and limbs located in close proximity to overhead electric wires where such branches and limbs may cause damage to such electric wires. The authority shall review each plan and may issue such orders as may be necessary to ensure compliance with this section. The authority may require each electric distribution company to submit an updated plan at such time and containing such information as the authority may prescribe. The authority shall adopt regulations, in accordance with the provisions of chapter 54, to carry out the provisions of this section.