EFTA00287165.pdf

9 East 71st Street: Comprehensive Energy Assessment 9 E 71St St. New York, NY 10021 Report submitted by: SourceOnc SourceOne, Inc. 1 7 Penn Plaza I New York, NY 10001 1 P BOSTON EFTA00287165  SourceOne January 24, 2011 Richard J. Barnett Property Manager 9 E 71st St. New York, NY 10021 Re: 9 East 71' Street Comprehensive Energy Assessment Executive Summary SourceOne Project Number 11-005 Dear Mr. Barnett: On December 23nd, 2010 SourceOne performed a walkthrough audit of the private residence located at 9 E 7151 St. in Manhattan, NY. Representatives of SourceOne have: • Conducted a facility walkthrough. • Conducted interviews and met with representatives of the facility. • Identified Energy Conservation Measures (ECMs) that will conserve energy. • Identified potential ECMs that cannot be financial justified. Executive Summary: SourceOne recommends the implementation of the following ECMs: 1. SI-ECM-1: Motor Upgrades Annual Energy Savings: 24,399 kWh ($4,626) Simple Payback: 1.18 years 2. SI-ECM-2: Backroom Lighting Upgrades Annual Energy Savings: 13,419 kWh ($2,544) Simple Payback: 3.34 years 3. SI-ECM-3: Installation of VFDs on Air Handler Unit Fan Motors Annual Energy Savings: 21,276 kWh ($4,034) Simple Payback: 9.74 years 4. SI-ECM-4: Installation of a Condensate/Hot Water Heat Exchanger Annual Energy Savings: 17 Mlbs of steam ($602) Simple Payback: 6.39 years 5. SI-ECM-5: Installation of a Free-Cooling Heat Exchanger Annual Energy Savings: 52,252 kWh ($9,906) Simple Payback: 3.09 years 6. SI-ECM-6: Installation of an Additional Multistack Chiller Annual Energy Savings: 38,650 kWh ($7,328) Simple Payback: 11.98 years Seven Penn Plaza • New York, NY 10001 • EFTA00287166  HBRK Associates Inc. January 24, 2011 9 East 71' Street - Comprehensive Energy Assessment Page 2 Relative to the annual electric consumption of 853,740 kWh for 9 E 7V' St., these ECMs represent a 21% energy savings and have a collective payback of 6.06 years. In addition to these six (6) ECMs, SourceOne has identified a potential energy conservation initiative whose enactment may benefit 9 E 71g St. but which cannot be easily justified financially. It is as follows: I. SI-ECM-7: Elevator Motor SCR Conversion Annual Energy Savings: 21,724 kWh of electricity ($4,119) Simple Payback: 30.36 years As will be described in detail in this report, each one of these initiatives could bring about substantial energy savings individually and as a collective whole. Facility Overview: The facility in question, 9 E 71g St., is a private residence located between 5'h Ave. and Madison Ave. on 71g St. in the upper east side of Manhattan. It has six (6) floors with approximately 30,000 ft2 of space. Although the building is a private residence, there is a year round staff charged with cooking, cleaning and providing security. Members of the staff also maintain the heating and cooling systems in the building. Energy Usage: The facility's current annual energy usage and costs include: • Electric o Usage - 814,110kWh o Cost - $154,307 o Rate - $0.190/kWh • Steam o Usage - 2,875 Mlbs o Cost - $99,069 o Rate - $34.24/Mlbs • Natural Gas o Usage - 51 MMBTU o Cost - $1,067 o Rate - $20.99/MMBTU • Energy Utilization Index (EUI): 204 kBTU/ft2 Electricity, gas and steam are all purchased from Consolidated Edison. Seven Penn Plaza • New York, NY 10001 • EFTA00287167  HBRK Associates Inc. January 24, 2011 9 East 71" Street - Comprehensive Energy Assessment Page 3 HVAC System: The heating, cooling and ventilation of the building at 9 E 71' St. is carried out by three main air handler units (AHUs). Two of them are located in the basement and the third is in the penthouse. Each AHU has a single speed supply fan that is powered by a 7.5 HP electric motor and contains heating and cooling coils. Heating: The facility accepts high pressure steam from Consolidated Edison and steps it down to low pressure steam before circulating it through steam/hot water heat exchangers. The water that is heated by these heat exchangers is pumped through the heating coils of the AHUs by two (2) hot water pumps located in the basement. In the AHUs, ambient air is blown across the heating coil which transfers heat from the heated water to the ambient air. The air is circulated through the conditioned space to provide heating. Cooling: A 30-ton, water cooled Multistack scroll type chiller and a much older 40-ton Carrier chiller, both located in the basement, are used to accomplish cooling. These are shown in the photos below. Photo 1: Multistack Chiller Seven Penn Plaza • New York, NY 10001 • EFTA00287168  HBRK Associates Inc. January 24, 2011 9 East 71" Street - Comprehensive Energy Assessment Page 4 Photo 2: Corner Chiller Figure 1 below depicts the common components comprising a water cooled chiller system. EIRERRGRIMEMaii 6,•1a WIRICOGUMG Tong RERAN CI.Lill, VASTRR GUM! Olt OAT ORE COPOGIO.00 TRACE EVAPORATOR COMMNOA C GOl w , fl NEIR, GERARD Eq•'.m WATER V** WATER RM PUMP 1 NR WO VNIT OTRIR INAIPCOAIME COOLING TOMB, Figure 1: Water Cooled Chiller System As can be seen from the illustration, there are three main components to the water cooled chiller system. These are the AHU, the chiller and the cooling tower. The chiller itself contains the compressor, the condenser, the expansion valve, and the evaporator. In the first stage of the refrigeration cycle, refrigerant enters the compressor as a low pressure gas and is pressurized by the compressor into a hot, high pressure gas. The high pressure gas leaves the compressor and is circulated to the condenser. In the condenser, the high pressure gas is cooled via a heat exchanger with the condenser water, which causes it to condense into a hot liquid. The hot liquid refrigerant then proceeds through an expansion valve, which decreases the pressure of the refrigerant, causing it to cool. The cool refrigerant is then circulated to an evaporator. In the evaporator, the refrigerant accepts heat from the chilled water, causing it to vaporize into a low pressure gaseous state. The AHU contains coils through which chilled water is circulated. These coils absorb heat from ambient air (chilling it) which is circulated through the conditioned space to accomplish cooling. The cooling tower (located on the roof) cools the condenser water through evaporative cooling. The condenser and chilled water pumps are all located in the basement. The HVAC system runs 24 hours a day 365 days a year to keep the building owner and staff at a comfortable temperature. Seven Penn Plaza • New York, NY 10001 • EFTA00287169  HBRK Associates Inc. January 24, 2011 9 East 71°' Street - Comprehensive Energy Assessment Page 5 Electric Utility: Consolidated Edison supplies electricity via a three phase, 208 volt bolted pressure switch that has 1000A fuses. There is no submetering as the entire building's electric usage is billed through one account. The sole Consolidated Edison meter is located in the basement. Photo 3: Consolidated Edison Meter In NYC electricity is supplied by third party Energy Service Companies. These companies charge for the electric supply, and Consolidated Edison charges fees for the delivery of that electricity. Consolidated Edison charges 9 E 71' St. for electrical delivery according to their EL9 rate. This rate is assigned to customers who are expected to have a monthly demand greater than 10 kW. The demand at 9 E 71' St. is well over 10 kW. Rate EL1 is the only other electric rate for which 9 E 7O St. could qualify. ELI is described as being used for customers who use electricity for general uses in an apartment or home. The EL9 rate has a higher monthly delivery charge than EL1 and charges per kW (which ELI does not) but has a much lower kWh charge than ELI does. Because of these differences in charges and the high demand and energy usage of 9 E 71° St., the delivery charges using ELI would be higher than that of EL9. A comparison of the delivery charges between the two rates (not including taxes and other surcharges) using average monthly energy usage and demand is included on the following page. Seven Penn Plaza • New York, NY 10001 • EFTA00287170  HBRK Associates Inc. January 24, 2011 9 East 71m Street - Comprehensive Energy Assessment Page 6 Monthly Average kW 132.7304 kWh 67,607 Comparison of ELI and EL9 Delivery Rates EL1 EL9 Monthly $15.76 Monthly $81.71 kWh under 250 $0.07 kW over 5 under 100 $19.97 kWh over 250 $0.08 kW over 100 $19.15 meter charges $21.42 kWh $0.02 meter charges $8.16 monthly total $5,678.84 monthly total $4,006.51 Table 1: Comparison of ELI and EL9 Delivery Rates Lighting: The living spaces of the building are lit with a wide variety of lamps, chandeliers, candelabras and wall/ceiling mounted fixtures. Most of them bear decorative or aesthetic appeal and will not be changed for the sake of efficiency. The basement and backroom areas, however, are lit mostly by fluorescent light fixtures as well as some floodlights and incandescent fixtures. The fluorescent light fixtures are a combination of 4 ft, 2-lamp, linear T12 light fixtures and 2 ft, 2- lamp, U-tube T12 light fixtures. Vertical Transportation: There is one passenger elevator in the building that is used by the building owner as well as guests and staff. It is a cable-driven elevator operated by a DC motor that is powered by a motor generator set. There is also one hydraulic freight elevator. SourceOne Recommended Energy Efficiency Measures: SourceOne has identified six (6) major energy efficiency measures that can be enacted at 9 East 71' St. They are as follows: 1. S 1-ECM-1: Motor Upgrades 2. S 1-ECM-2: Backroom Lighting Upgrades 3. SI-ECM-3: Installation of VFDs on Air Handler Unit Fan Motors 4. SI-ECM-4: Installation of a Condensate/Hot Water Heat Exchanger 5. SI-ECM-5: Installation of a Free-Cooling Heat Exchanger 6. SI-ECM-6: Installation of an Additional Multistack Chiller The appendix of this report contains the spreadsheet analysis evaluating each of these ECMs. The annual savings, material cost, labor cost, and simple payback is calculated for each ECM individually as well as for the collective whole. Seven Penn Plaza • New York, NY 10001 • EFTA00287171  HBRK Associates Inc. January 24, 2011 9 East 71" Street - Comprehensive Energy Assessment Page 7 S I -ECM-1: Motor Upgrades Electric motors manufactured after the Energy Policy Act of 1995 are required to have high efficiency performance. During the walkthrough audit, SourceOne identified six (6) motors produced before 1995 that can be replaced with high efficiency equivalent units. These motors were each 7.5 horsepower and include the three AHU fan motors and the three condenser water pump motors in the building. The existing motors have an efficiency rating of 85.2%, where the new equivalent motors have an efficiency rating of 91.7%. This difference can be seen in Figure 2 below. Replacement Results in Big Savings • • • • nip 95 • • • la • 1 Efficiency (TEFC 4-pole Motors) (percent) • • * • • s • • • • • : : • I I • • • • • • • • • • • • • 90 -' -7 -4—•-- • • • * • • • • 1 • • • • • • • • • 65 • • • • Average Old Motor • • • • • Prior NEMA EE Standard • so • • • NEMA EE/EPACT • NEMA Premium 75 I 10 20 50 NO a a Horsepowor Figure 2: Motor Efficiency The motor upgrade analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 24,398 kWh annually. The corresponding cost savings is $4,625 annually. With a total material and labor cost of $5,459 the simple payback would be 1.18 years. S I -ECM-2: Backroom Lighting Upgrades During the walkthrough audit, SourceOne identified several backroom areas with lighting fixtures that could be retrofitted or replaced with more energy efficient options. For retrofits, the fluorescent tubes and ballasts would be removed and replaced leaving the existing light fixture. Replacements require the removal of the existing light fixture and installation of an entire new one. These changes can be broken up into these four specific categories. • Retrofit 4ft, 2-lamp, linear fluorescent T12 fixtures with corresponding 4ft, linear fluorescent T8 lamps and electronic ballasts. o These retrofits will save about 31W per fixture • Replace 2ft, 2-lamp, T12 U-tube fluorescent fixtures with 2ft, 2-lamp, linear fluorescent T8 fixtures with electronic ballasts. Seven Penn Plaza • New York, NY 10001 • EFTA00287172  HBRK Associates Inc. January 24, 2011 9 East 71' Street - Comprehensive Energy Assessment Page 8 o These replacements will save about 56W per fixture • Replace flood light bulbs with compact fluorescent lamps (CFLs) of equivalent luminosity o These replacements will save about 45W per bulb • Replace incandescent bulbs with CFLs of equivalent luminosity o These replacements will save about 40W per bulb The lighting upgrade analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 13,419 kWh annually. The corresponding cost savings is $2,544 annually. With a total material and labor cost of $8,507 the simple payback would be 3.34 years. S 1-ECM-3: Installation of VFDs on air handler units fan motors During the walkthrough audit, SourceOne identified several electric motors that could be made to run more efficiently through the installation and use of variable frequency drives (VFDs). These motors include the three (3) 7.5 horsepower units powering the fans in the main AHUs. For AHU fans, the HP requirement varies as the cube of the speed, so the slower the fan speed - the less energy required. A fan running at 80% speed will consume only 50% of the power of a fan running at full speed. At 50% fan speed, power consumption is only 16%. This is illustrated in Figure 3. A 100 HPfan running at halfspeed only requires the energy of a 16 HP motor? 100 90 1 80 *9 70 V so 50 t 40 30 20 ry 10 0 gggCI CO go V g U1 CO O r-- O CO O CO O O Percent Fen Speed Figure 3: Relationship between Fan Speed and Motor HP Requirement Given the relationship shown in Figure 3, the installation of a VFD will help reduce the electric usage of the AHU fans. The AHU fan motors can be run at 80% speed when the building owner is present to maintain the low temperature he prefers. When the building owner is not present, the AHU fan motors can be run at 50% speed to reduce the power consumption and save energy. Seven Penn Plaza • New York, NY 10001 • EFTA00287173  HBRK Associates Inc. January 24, 2011 9 East 71" Street - Comprehensive Energy Assessment Page 9 The installation of VFDs on AHU fan motors analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 21,276 kWh annually. The corresponding cost savings is $4,034 annually. With a total material and labor cost of $39,285 the simple payback would be 9.74 years. S I -ECM-4: Installation of a Condensate/Hot Water Heat Exchanger During the walkthrough audit, SourceOne noticed that the hot condensate, produced from using the Consolidated Edison supplied steam for heating, is being cooled to acceptable disposal temperatures by quenching it with cold tap water before allowing it to drain into the sewer system. It is necessary to cool the condensate because the city requires that water temperature be below 120°F before allowing it to drain into the sewers. The condensate however is at a temperature of about 180°F after it exits the heat exchangers. The 60°F difference represents a significant amount of energy being wasted when the condensate is quenched and disposed. A method to use the energy in the still hot condensate rather than dispose of it would be to install a plate and frame heat exchanger between the condensate and unheated water to pre-heat it before sending it to the two domestic water heaters. This would conserve energy in the form of steam used in the domestic the water heaters, as well as save water that would be used to quench the condensate to an acceptable temperature. The condensate/hot water heat exchanger analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 17.59 Mlbs of steam as well as 67,000 ft3 of water annually. The corresponding cost savings is $800.85 annually. With a total material and labor cost of $5,514 the simple payback would be 6.89 years. S1-ECM-5: Installation of a free-cooling heat exchanger During the walkthrough audit, SourceOne was informed that the chiller is used all year round. When temperatures are below 48°F however, the chiller could be effectively bypassed by installing a heat exchanger between the condenser water from the cooling tower and the chilled water that is circulated through the AHUs. This is effective because the chiller normally outputs chilled water at 47-48°F and if the outdoor air temperature is below the chilled water temperature a chiller is not needed to cool the chilled water. Heat will naturally flow from the warmer returning chilled water to the condenser water through the heat exchanger and then from the condenser water to the outside air in the cooling tower. Under these circumstances, the heat exchanger would harness free-cooling and a large amount of energy would be saved by shutting down the chiller unit when the temperature drops below 48°F. In addition to the heat exchanger itself, valves would need to be installed to switch between the chiller and heat exchanger and these would need to be tied into the existing central control system. The free-cooling heat exchanger analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 52,252 kWh annually. The corresponding cost savings is $9,906 annually. With a total material and labor cost of $30,644 the simple payback would be 3.09 years. Seven Penn Plaza • New York, NY 10001 • EFTA00287174  HBRK Associates Inc. January 24, 2011 9 East 71m Street - Comprehensive Energy Assessment Page 10 S I -ECM-6: Installation of an additional Multistack chiller During the walkthrough audit, SourceOne noticed that two chillers are being used in the facility. One of them is a 30-ton scroll type Multistack chiller. This was installed in the last few years to replace one of two older Carrier chillers. The other Carrier chiller is still in operation along with the new Multistack. Multistack chillers are modular units that are designed to easily be combined to create a chiller sized to match any demand. Therefore it is relatively inexpensive to add on to the Multistack modules already installed in the facility. SourceOne recommends installing another two (2) 15-ton modules to cover the load currently being handled by the older and less efficient Carrier chiller which can then be shut down permanently. With the more efficient chiller installed, we can expect an energy savings of about 0.22 kW/ton of cooling. The additional Multistack chiller analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 38,649 kWh annually. The corresponding cost savings is $7,327 annually. With a total material and labor cost of $87,750 the simple payback would be 11.98 years. Examined Energy Efficiency Measure That Cannot Be Financially Justified: SourceOne identified a potential energy conservation measure but, due to its large initial cost and long payback period, its feasibility will need to be further examined. The ECM is as follows: S I -ECM-7: Elevator Motor SCR Conversion During the walkthrough audit, SourceOne notice that the building's elevator motor currently runs on an outdated Motor Generator set. This could be replaced with a more modern and efficient SCR static drive. An MG set is used to convert the AC current from the utility line to DC current which is used by the main elevator motor. A DC motor was chosen for almost all elevators (until very recently) because it provides a much smoother operating elevator. Because utility supplied power is AC the MG set, which is an AC motor running a DC generator, was developed. This has been an effective solution in the past, however it poses several problems. To provide immediate power for the elevator motor, the MG set spends much of it's time in idle. When idling, the MG set can use up to 40% of its full load current. In addition, it is inefficient when in operation by today's standards and requires regular maintenance because it has high speed moving parts. The more recently developed SCR static drive is a solid state device that converts the AC current to DC. It does this more efficiently and immediately without running in any idle state. The elevator conversion is quite expensive, however, and will take an extended period to pay for itself. The elevator motor SCR conversion analysis is shown in the ECM analysis in the appendix. As can be seen, the energy savings has been calculated to be 21,723 kWh annually. The corresponding cost savings is $4,118 annually. With a total material and labor cost of $125,053 the simple payback would be 30.36 years. Seven Penn Plaza • New York, NY 10001 • EFTA00287175  HBRK Associates Inc. January 24, 2011 9 East 71" Street - Comprehensive Energy Assessment Page 11 SourceOne Recommended ECM Summary: SourceOne recommends the implementation of the following ECMs: 1. S1-ECM-1: Motor Upgrades Annual Energy Savings: 24,399 kWh ($4,626) Simple Payback: 1.18 years 2. S1-ECM-2: Backroom Lighting Upgrades Annual Energy Savings: 13,419 kWh ($2,544) Simple Payback: 3.34 years 3. S1-ECM-3: Installation of VFDs on Air Handler Unit Fan Motors Annual Energy Savings: 21,276 kWh ($4,034) Simple Payback: 9.74 years 4. S I -ECM-4: Installation of a Condensate/Hot Water Heat Exchanger Annual Energy Savings: 17 Mlbs of steam ($602) Simple Payback: 6.39 years 5. S1-ECM-5: Installation of a Free-Cooling Heat Exchanger Annual Energy Savings: 52,252 kWh ($9,906) Simple Payback: 3.09 years 6. S1-ECM-6: Installation of an Additional Multistack Chiller Annual Energy Savings: 38,650 kWh ($7,328) Simple Payback: 11.98 years Relative to the annual electric consumption of 853,740 kWh for 9 E 71" St., these ECMs represent a 21% energy savings and have a collective payback of 6.06 years. In addition to these six (6) ECMs, SourceOne has identified a potential energy conservation initiative whose enactment may benefit 9 E 71" St. but which cannot be easily justified financially. It is as follows: 1. S1-ECM-7: Elevator Motor SCR Conversion Annual Energy Savings: 21,724 kWh of electricity ($4,119) Simple Payback: 30.36 years Each one of these initiatives could bring about substantial energy savings individually and as a collective whole. If you have any questions, please do not hesitate to contact us. Thank you for this opportunity to be of service. Seven Penn Plaza • New York, NY 10001 • EFTA00287176  HBRK Associates Inc. January 24, 2011 9 East 71" Street - Comprehensive Energy Assessment Page 12 Sincerely, Timothy Sande Associate Project Engineer SourceOne Inc. Seven Penn Plaza • New York, NY 10001 • EFTA00287177  SourceOne Appendix: Section 1: Utility Billing Data Seven Penn Plaza • New York, NY 10001 • EFTA00287178  readsh4,41lostruelione: SourceOne All baka in lighi yen« are input folet. This dala med: le 6o gathored troen DCAS Or Ihe Facilly Sta. All halds in lighl green are aule« klet This fl ormaton Mn be used to analyzo gro tonal:dry olvanous Energy Ccansorvabon Moasuros (CCM] ~es in t•loni yebra are assumed tien* Ul% 443 nol govi:OKI Cr nl8veleNe 9 East 71si Skoti 9 Eau 7181 Sinte, Ne. Vak, NY 10021 Faciny Sauane Foolafte lor stoarn. 30.110 Hour ot C)C13.10.1 247 Total ~Na:y Cp.,ra•rg teluer I&I, Fatale Sauero F00148110,«alt 30.400 } aciny Uso 6uncion: Pnvate Inesitlence 1..%tataier ~annan: Electric Utility Consumation Information: ENTRE 81.043 CE BILL Vis une me Fe Nie Ar MIN Jun ar Aug 3•11 Oet Nov oie kSMI Tout 2009 KWH 62,880 69580 65.040 62.760 62.760 61.200 63.120 63,120 63.120 63,120 70,560 67.920 774.480 2010 KWH 74.160 62.400 63.720 63.720 65.760 80,280 80.2193 73.440 72.000 72.360 72.360 73.260 8$1.740 a iainzataino ic iro~rano~irsi eastaste~ez ein7 2010 KW 127 1C 149 149 120 161 161 130 134 151 151 139 161 2009 US 3 10.944.81 3 12.636.47 S 10,738.05 3 11.385.46 S 11.385.46 3 12.565.79 S 12.036.50 3 12.03650 1 12.036.50 5 12.036.50 3 11.341.73 1 11.793.59 3140.934 2010 1$$ $ 13,584.0 3 11,364.09 $ 13,98435 $ 13,984.35 6 13,354.50 $ 157652.24 $ 16,652-24 $ 13.255_74 j 13,140.22 3 13,965.58 1 13.92858 1 13,775.10 5167579 Unt COSI As. e Monn W.179 10.163 10.192 30.201 50.192 10.207 50260 30-185 $0.186 10.192 30-177 10.181 10190 Veer Avers« BocTric4 Ccm:ti-nou:n 8147 10 kWh Ele«ncal Deraand 149 kW Elaln Lend Fxter 62% Eletliic CO14 5 154.307 EFTA00287179  medal**, Inenutgena: SourceOne All bat in Iglu yelkne we input fees. This data need: ID be gathered from OCAS Or Mors:111y Sore All bads in Ighl green are oulpiA apps. This irionnanan wilt be used to analyze the toasettley of various Energy Conservabon Measures (ECM Values in telohl yelkra are imumed liege Ulilly eels 001 Of%kW Co ACIa.5914010 Steam Uti Account Nainelnlo Oat AnnualUM 2003 JAGS 312 264 290 258 246 263 232 217 217 271 259 323 3.153 2010 vies 274 263 214 221 204 198 172 172 183 205 2391 25' 2597 2009 12.112 9997 9.938 9,294 b 42 14 $ 7 710 765 1 6 025 $ 6 362 $ 7 305 102 768 2010 Um Cod Average lit 10.365 I 9(962 8./30 S 3/.01 4 asos 37.17 s slas s $ 6510 use' s 355 32.49 $ 8.402S 31.96 $ sq:Sia t ass* -I 7'2139 30.08 I t:1 73 1 1:121 4 4 9670 38.36 S 37.92 $ Stew n Cc I0 2.675 to Stearn Cog 99.069 Account Narnelnlo IVsar I OM Jan Apr Ilay Jun Jul Aug [Sepil l.ler il [Dec Annual Total ESSE 2001 1.1BTU 4.2 35 34 33 33 40 34 37 38 24 48 35 43 2010 5113Tu 3.4 4 4 47 5.0 6.01 85 63 50 2009 5$$ $ 97 87 $ 78 SS $ 68 so $ 70 76 S 56 93 B0 93!, 2010 93 70 72 105 91 3 94 91 103 119 5 77 $ 153 $ 123 11f).) UntCoel Average 61.487U 3 22.89 S 23.82 $ 2214 $ 19.52 4 2052 $ 20.07 4 2035 $ 2048 $_ 19.64 5 2261 $ 1899 $ 2.68 $ 2.`7 Gas ConsyniA cr I SI IUBTU Gas Cos: 1.067 27.14 Kahn' Atnue, Elecon Coreunplon 92.6 Mule 0.096 Mbyte Annual Steam Consumseco 111.2 Mule Total Annual Energy 204 kIlluit2 COnsumplIan 2.04 theme& EFTA00287180  Elec 10/13/2010 12/14/2010 144,720 151.2 $27,931.16 _2009 I! an 62.880 132 $10,944.94 11/10/2010 12/14/2010 -- -- -- 2009 feb 68,880 122.4 $12,635.47 10/13/2010 11/10/2010 -• -- -- 2009 mar 65.040 120 $10.736.05 9/13/2010 10/13/2010 72,000 134.4 $13,140.22 2009 apr 62760 120 $11,385.46 8/12/2010 9/13/2010 73,440 129.6 $13,255.74 2009 may 62760 120 $11,385.46 5/13/2010 8/12/2010 -- -- -- 2009 jun 61200 120 $12,565.79 6/14/2010 8/12/2010 160,560 160.8 $33,304.47 2009 jul 63120 124.8 $12,036.50 5/13/2010 6/14/2010 65.760 120 $11354.50 2009 aug 63120 124.8 $12.036.50 3/17/2010 5/13/2010 127,440 148.8 $27,968.69 2009 sep 63120 124.8 $12,036.50 4/15/2010 5/13/2010 -- -- -- 2009 oct 63120 124.8 $12,036.50 3/17/2010 4/15/2010 •• -- -- 2009 nov 70.560 127.2 $11,341.73 2/16/2010 3/17/2010 62,400 122.4 $11,364.09 2009 dec 67,920 136.8 $11,793.59 1/14/2010 2/1672010