ASU's "Board of Trustees" approved a plan to borrow $5.34 million to implement a variety of energy-saving measures across campus. The measures are expected to save at least $600,000 a year in energy costs. Those savings will be used to repay the loan within 12 years or less.  Jerry Marshall, ASU's energy director, said many of the "energy efficiency measures" will showcase renewable and energy efficient technologies. Appalachian looked at 39 energy conservation measures and selected 26 with the best energy savings compared to the cost to implement. Projects include "replacing or improving some heating and air conditioning units on campus", installing efficient lighting in various campus buildings and installing a solar thermal water heating system for Varsity Gym.  Also, an automated system will be installed in "eight office and academic buildings on campus" to adjust heat or air conditioning when they are unoccupied at night.