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4. Replacing incandescent or compact fluorescent exit signs with low power LED lamps can save from 14 to 39 watts per fixture. Since LED lamps have a life expectancy of over 20 years, maintenance costs can also be significantly reduced. 5. Exterior incandescent or quartz flood lights can be cost effectively upgraded to energy efficient high intensity discharge lamps, such as metal halide or high pressure sodium fixtures. 6. Timed switches and occupancy sensors are automatic controls which turn off lights in unoccupied areas and turn them on only when needed. Storage areas, public restrooms, hallways, offices, meeting rooms, and outdoor entrances are often cost-effective applications for these automatic controls. All of the previous lighting recommendations have been implemented successfully in hundreds of commercial buildings in Minnesota. The payback of any lighting improvement must be calculated on an area by area basis since operating hours and other conditions may vary significantly. Many electric utilities offer lighting efficiency rebates. A few arenas that have recently upgraded public space lighting are listed below. Arena Contact Person Bloomington Ice Gardens Andy Baltgalvis Farmington Civic Arena Jim Bell Cottage Grove Arena Dean Mulso Lily Lake (Stillwater) Diane Deblon West St. Paul Arena Dave Malay Ice Sheet Lighting Recommendations Phone (612)948-8842 (612) 463-1851 (612) 458-2846 (612)430-8811 (612) 552-4155 Ice sheet lighting costs can be reduced by replacing or upgrading inefficient light fixtures and by varying ice sheet light levels based on activity. Common lighting fixture upgrades that are often cost-effective include changing from standard fluorescent or mercury vapor fixtures to metal halide or high pressure sodium fixtures. A relatively new option that can provide even greater energy savings is to upgrade to compact fluorescent fixtures designed specifically for athletic facilities. In addition to providing energy cost savings, the lighting fixture upgrades mentioned above also tend to result in lower maintenance costs, better quality lighting, and increased control options. Three arenas in Minnesota that are using the newer compact fluorescent fixtures over the ice sheet are listed below. Arena Contact Person Phone Cottage Grove Arena Dean Mulso (612) 458-2846 Vogel Arena (New Ulm) Jim Krapf (507) 354-8321 St. Louis Park Arena Craig Panning (612) 924-2545 The level of illumination required for any sports lighting installation depends upon many factors, including the general nature of the task, the speed of the action, the skill of the players, the Energy Improvements in Minnesota Public Ice Arenas Project Page 3 Center for Energy & Environment