Yellowstone National Park is extending the public comment period on a plan to implement infrastructure upgrades to the electrical power distribution system in the park. Spokesman Al Nash says the comment period is being extended for an additional 15 days, until December 21st to give interested parties additional time to comment. Nash explains, “We just look at the time of the year that we’re addressing, and we’re just acknowledging that there is interest in this proposal and we felt it prudent to offer another 15 days. Nash explains that much of NorthWestern Energy’s existing power infrastructure in the park has not been updated since the 1950’s and is prone to frequent outages because of the remote nature of the park, inhospitable terrain, climate, and tree cover near transmission lines. The purpose of the Environmental Assessment is to evaluate alternatives that may reduce the duration of those power outages, improve system reliability, and improve visitor and employee safety. A copy of the assessment is available online at parkplanning.nps.gov/NWEPlan.