1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 1
Why bother? any facilities don t ever see their bills 6, 4, 2, Disconnect between plant and corporate offices Disconnect between operations and accounting any plant personnel don t understand their billing rate 1,2, 6, 1,, 5, 8, Baselining is important 4, for energy efficiency projects 4 4 4 3, 2, 1, 2
Energy Bill Compilation and Analysis Helps understand overall magnitude of facility energy usage Can help to identify trends in energy usage ay identify opportunities for energy and cost efficiencies 1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 3
Example: CSU IAC Reports Breakdown by energy Electric, peak demand, gas, water, sewer Description of rate Sample bill calculation Rate component trends 1,2, Rate component trends 6, Calculation of unit costs of electric energy, 1,, 5, 8, 4, Calculation of unit costs of electric energy, 6, 3, 4, 2, 2, peak demand, and natural 1, gas onthly summaries and graphs onthly summaries 4 4 4 and graphs 4
1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 5
1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 6
1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 7
Example: CSU IAC Reports OVERALL UTILITY BILL SUARY Electric Usage 4,464,494 kwh or 15,237.3 Btu Electric Usage Cost $172,19 Electric eter Cost Pk Electric 9,778 kw-mo or avg. Pk Electric Demand Demand 815 kw/mo. Cost $14,169 $298 Gas Usage 27,376.3 Btu Gas Cost $246,12 TOTALS 42,613.6 Btu $558,588 1,2, 1,, 8, 2, 6, 3, Total 4, Energy Usage: 263,747 Btu/sq. ft./yr2, Total Energy Cost: $3.45 /sq. ft./yr ANNUAL UTILITY USAGE BY BUILDING SIZE Facility Size: 161,57, sq. ft. Electric Usage: 94,38 Btu/sq. ft./yr4, Electric Cost: $1.93 /sq. ft./yr Gas Usage: 169,439 Btu/sq. ft./yr Gas Cost: $1.52 /sq. ft./yr 4 4 4 6, 1, 8
Example: CSU IAC Reports Load Energy Net Peak Net Avg. Net Usage Usage Demand Demand Load Other Total onth kwh Cost kw-mo Cost Factor Costs Cost 6 347,69 $16,631 86. $11,215 56.1% $27 $27,873 6 348,216 $15,394 748. $1,247 62.6% $27 $25,668 6 356,64 $15,812 87. $11,952 58.9% $27 $27,791 381,247 $13,649 788. $1,757 65.% $17 $24,423 FIGURE 341,29 1: FACILITY $11,782 ENERGY USAGE832. $11,358 61.% $17 $23,157 4,569 $13,753 831. $11,914 62.8% $21 $25,688 1,2, FACILITY ELECTRIC BILL SUARY 384,617 $13,87 826. $12,66 64.7% $27 $25,774 1,, 5, 8, 36,258 $11,929 821.4, $12,577 63.% $27 $24,533 6, 3, 395,115 $13,83 868. kwh consumption $13,297 59.3% $27 $26,47 4, 2, Factor = kw peak 384,96 $12,747 785. $11,651 7.5% $27 $24,425 2, 1, Nov- 363,253 $13,983 794. $11,165 65.7% $27 $25,175 Dec- 41,521 $2,259 89. $11,376 62.7% $27 $31,662 TOTALS 4,464,494 $172,19 9,778. $14,169 62.7% $298 $312,576 Nov- Dec 4 4 4 6, demand 24 h/day days in billing cycle 9
Example: CSU IAC Reports Gas Therm Gas Net Net Usage Factor Usage Gas Other Total onth ccf Btu/ccf Btu Cost Cost Cost 6 3,285.9853 323.7 $3,887 $17 $3,94 6 3,565.991 353. $4,28 $18 $4,298 6 3,462.999 343.1 $3,525 $22 $3,547 2,64.9697 252.5 $2,63 $17 $2,8 FIGURE 1: 1,357 FACILITY ENERGY.9596 USAGE 13.2 $1,12 $17 $1,119 185.9418 17.4 $151 $17 $168 1,2, 6, 1,, -.9299-5, $ $17 $17 8, 12.9314 4, 9.5 $92 $18 $11 6, 3, 4, BILL SUARY - WAREHOUSE 57.9298 5.3 $53 $18 $71 2, 474.962 45.6 $537 $18 $555 2, 1, Nov- 1,468.9741 143. $1,739 $18 $1,757 Dec- 3,39 1.9 4 4 4 341. $4,143 $18 $4,161 TOTALS 19,949.9642 1,964.3 $21,572 $215 $21,787 1
Example: CSU IAC Reports 45, 4, 4,5 4, 1,2, 1,, 8, 6, 4, 2, 35, 3, 25, 2, 15, 1, 5, 4 4 4 6, 5, 4, 3, 2, 1, Jan Feb ar Apr ay Jun Jul Aug Sep Oct Nov Dec 3,5 3, 2,5 2, 1,5 1, 5 11
Example: CSU IAC Reports $35, $3, FIGURE 2: FACILITY ENERGY COSTS Energy Costs 1,2, 1,, 8, 6, 4, 2, $25, $2, $15, $1, $5, $ 4 4 4 6, 5, 4, 3, 2, 1, Jan Feb ar Apr ay Jun Jul Aug Sep Oct Nov Dec 12
Example: CSU IAC Reports $35, $3, FIGURE 3: FACILITY COSTS Electricity Costs 1,2, 1,, 8, 6, 4, 2, $25, $2, $15, $1, $5, $ 6 6 6 4 Nov- 4 Dec- 4 6, 5, 4, 3, 2, 1, ENERGY DEAND ETER Nov- Dec- 13
Example: CSU IAC Reports FIGURE 4: FACILITY PEAK ELECTRIC DEAND 88 Peak Electric Demand, kw 1,2, 1,, 8, 6, 4, 2, 86 84 82 8 78 76 74 72 7 68 4 Nov- 4 6 6 6 Dec- 4 6, 5, 4, 3, 2, 1, Nov- Dec- 14
Let s look at some more detailed trend data that may be available 1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 15
Detailed Historic Demand Charts: Xcel Energy 1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 16
Detailed Historic Demand Charts: Xcel Energy 1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 17
Detailed Historic Demand Charts: Xcel Energy 1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 18
Historic Demand: Example 2 1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 19
Historic Demand: Example 2 1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 2
Historic Demand: Example 3 1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 21
Historic Demand: Example 3 1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 22
Historic Demand: Example 4 1,2, 1,, 8, 6, 4, 2, 4 4 4 6, 5, 4, 3, 2, 1, 23
Equipment Demand Example Interval data (3 seconds) for System (Trim, Baseload, System) and Periods (Baseline) 4/ 2/ 26 12:45:44 P to 4/ 26/ 26 7:39:4 A 3 amps psi 13 12 11 2 1 1,2, 1,, 1 8, 6, 4, 2, Fri 21 Sat 22 Sun 23 4 4 4 on 24 6, 5, 4, 3, 2, 1, Tue 25 Wed 26 9 8 7 6 5 4 1hp amp (amps) 15hp amp (amps) Pressure (psi) 24
Information Sources CSU IAC Xcel Energy website 1,2, 1,, 5, 8, 4, Xcel Energy Customer Service Reps 6, 3, 4, 2, Energy & Rates: Home\About Energy & Rates\Energy Prices (Rates & Tariffs)\CO Energy Rates Tariffs: Business\Programs & Resources\Business and Commercial Energy Rates Xcel Energy Customer Service Reps 4 4 4 6, 2, 1, 25