INFORMATION 11-07-2011 - Laserfiche WebLink

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ENERGY, WASTE MANAGEMENT ASSESSMENT j fixtures, operating on photocells. One complaint heard was that sitting/working near the windows produces a cold feeling-probably due to the aluminum frames on the windows. ~: Energy, Water, Waste Costs and Bencf~rt~arks Annual utility costs are presented in Table 1: Bill Data Summary information for one year is in Table 4 on the last. page of this report. Table 2: Annual Utility Costs Electrical Fuel Water Waste Total $38,891 $22,372 $0 $1,202 $62,460 Table 3 lists the City Hall energy use per square foot of space and the DOE IA Benchmark information for similar buildings in this temperature zone. Table 3: Benchmark Eneruy Information KwH/FtZ Fuel Total 's/FtZ Tons C02 Kbtu/Ft2 Kbtu/Ft2 Building Total 9.4 66 98 $1.42 438 *DOE IA Benchmark 10.2 50.7 85 - - 0 0 0 $0 0 "Department of Energy Information Agency 2003 Building Average Data, Zone 1(Degree Days > 7000) for Service type buildings. Note: Energy Star building energy efficiency requirements can be 20% to 30% below DOE IA Benchmarks. The benchmark information from the above table shows that the City Hall used less electrical energy for the year evaluated than comparable buildings in this temperature zone based on the DOE benchmarks but would not meet Energy Star requirements for the year, at about 25 percent lower. However, the building used considerably more fuel than the benchmark number, 66 kbtu/sq.ft versus the benchmark of 50.7 See Section 4 for further discussion on this issue. 4: Potential Savings Benchmark Discussion As mentioned above, the fuel used for the year assessed, 66 Kbtu per sq.ft. of space, was considerably above the DOE benchmark number of 50.7 Kbtu per sq.ft. If the DOE benchmark number were achieved, the total fuel savings would be 6,579 therms and $5,224 for the year, based on 43,000 square feet of space. The DOE benchmark used by RETAP for total energy was somewhat less than the M3 benchmark used by the city, 85 Kbtu per sq.ft. versus 95 Kbtu per sq.ft. for B3. This may be due in part to the different time period the benchmarks cover. The recommendations discussed in this report would provide potential reduction in fuel use of 10;565 therms, if all were implemented and savings were as calculated. Therefore; this would bring the City Hall 3,986 therms below the DOE benchmark. However, Energy Star building energy efficiency requirements are 20 to 30 percent below DOE IA Benchmarks. These numbers provide targets and goals for the City to work toward. Page 4 of 9