1 Oconomowoc Area School District Energy Update 6-Month Status Report December 2005 – May 2006
2 Primary Goals Energy Management Program n Maintain Comfort & Safety in Occupied Areas r Coordinate usage of facilities and monitor operational efficiency of equipment vs. design. n Eliminate Energy Waste r Audit buildings during unoccupied times. r Monitor building usage during occupied times r Track & analyze consumption for building efficiency r Use diagnostic loggers to track waste r Maintain energy policy and guidelines n Save Dollars r Minimize consumption and demand charges r Evaluate usage trends for abnormalities
3 Comparing Apples to Apples Changes in Weather Changes in Building Square Footage Special Adjustments (changes in equipment or programs) The accounting program adjusts the Base Year consumption to reflect these changes and an Apples to Apples comparison is achieved. In order to make a valid comparison between consumption in the Base Year and consumption in a Savings Year certain criteria must be taken into account. Differences in the length of the Billing Periods
4 Total Utility Cost Distribution (6 months)
5 Electric Utility Comparison (6 Months) Actual Dec04 to May05 Actual Dec05 to May06 Expected Dec05 to May06 Actual Dec04 to May06 Actual Dec05 to May06 Expected Dec05 to May06 Average Unit Cost Increased 32.0% Total Avoided Use = 746,812 kWh Expected minus Actual = $59,163 Cost Avoided
6 Natural Gas Utility Comparison (6 Months) Actual Dec04 to May05 Actual Dec05 to May06 Expected Dec05 to May06 Actual Dec04 to May05 Actual Dec05 to May06 Expected Dec05 to May06 Average Unit Cost Increased 26.2% Total Avoided Use = 76,961 Therms Expected minus Actual = $85,499 Cost Avoided
7 Water/Sewer Utility Comparison (6 Months) Actual Dec04 to May05 Actual Dec05 to May06 Expected Dec05 to May06 Actual Dec04 to May05 Actual Dec05 to May06 Expected Dec05 to May06 Average Unit Cost showed minimal change Total Avoided Use = Increased 88 KGal Expected minus Actual = -$430
8 Monthly/Total Cost Avoidance (6 Months) 6-Months $ 144,232
9 Environmental Benefits The EPA estimates that every kilowatt-hour (kWh) of electricity use avoided prevents the emission of the following: 1.5 pounds of carbon dioxide 5.8 grams of sulfur dioxide 2.5 grams of nitrogen oxides. Our District has saved over 740,000 kWh in a 6-Month period. These savings are equal to: 1,120,000 pounds of carbon dioxide emissions being prevented, or 105 automobiles being removed from the highways annually, or 217 acres of trees being planted.