City Council Study Session Agenda and Packet 2009 01 13

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City of Louisville Energy Report Third Quarter - 2008 Welcome to the City of Louisville Energy Report. This report contains information about how the City of Louisville uses energy in its facilities and fleet. The Energy Report is issued quarterly and will be distributed to building users as well as the Council. By tracking our energy consumption we can better understand how we use energy, where to focus our energy conservation efforts and finally to determ ine the effectiveness of any energy saving changes that have been made. Although the City has over 50 sites which consume energy, the top nine (T9) sites represent roughly 98% of the natural gas and electricity we consume. Therefore the Energy Report will include data only from the top nine sites. For the T9 sites data will be provided for both electricity and natural gas consumption per day by month. Energy use per day is a more accurate way to track consumption since months have different lengths and meter reading intervals are not constant. Measuring use per day eliminates these month to month variations which can make it more difficult to meaningfully compare one month with that of another. In addition to the site data the following reports are included: . Pie chart of total energy usage and costs for the T9. . Cooling and Heating Degree Days - This data from the National Weather Service can help us understand how the weather affects the heating and cooling loads of our facilities . Energy usage per square foot - This data is useful in comparing similar facilities as well as comparing our facilities to those that meet certain energy standards. . Metric tons of carbon - This calculation includes energy use from the top nine sites as well as all fuel consumed by the fleet. Data Summary For the first Energy report a great deal of effort was expended gathering data, data entry and creating graphs for easier interpretation. Observations and first impressions of the data: . The remodel of City Hall which included new rooftop heating/cooling units and energy efficient lighting has had a noticeable effect on energy consumption. A good example of how the right equipment can save energy. . Pumps consume a lot of energy as demonstrated by the electrical usage at the water treatment and wastewater plants. Energy Report Facilities Management City of Louisville 6 PDF created with pdfFactory trial version www.pdffactory.com