In addition to its focus on sustainability, since 2002 Western has committed to implementing energy conservation measures as a means of reducing its impact on the environment. These conservation measures have included replacing inefficient lighting in many campus buildings, removing unused chilled water coils in air handling systems, upgrading to efficient motors and variable speed drives, and installing heating/cooling control sensors. During the summer of 2007, Western installed power control devices on more than 50 campus vending machines and is looking to implement network software to manage the power settings of approximately 2,500 campus computers. By the end of 2007, Western will have spent almost $900,000 and received over $415,000 of Energy Conservation grants from Puget Sound Energy to reduce annual electrical consumption by more than 2,000,000 kWh and steam generation by 917,000 pounds. At the current price of electricity and natural gas, Western will be avoiding over $140,000 per year in energy expense, providing payback on construction costs in less than 3½ years.