Not according to an insider at Stratton. Alterra wanted to purchase the Snow Bowl HSQ without diesel backup due to the cost. They were convinced to spend the money. They are lucky they did as the electric motor recently crapped out after only 3 years and they are running the lift all day on diesel. I think I was told they come with a small electric backup to clear the line.I believe all lifts, suspended ones, are required to have a diesel as backup.