2010 Report - Pennsylvania Public Utility Commission

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The MISO reserve margin for existing capacity resources is 21,669 MW for 2009, which is 21.6percent, based on net internal demand. With an additional 424 MW of planned new capacity, thereserve margins are expected to meet the 15.4 percent target through 2014. If the likely portion ofproposed capacity additions is included, the reserve margin target is expected to be maintainedthrough 2018.Uncertain resources are not included when determining the reserve margin. Uncertain resourcesare the existing generation that represents wind/variable resource deratings, generating capacitythat has not been studied for delivery within the RTOs, and capacity located within the region thatis not part of PJM or MISO committed capacity. Conceptual capacity represents less certain futurecapacity additions and only a portion of the capacity is included when determining the expectedreserve margins.The amount of available wind power capability included in the reserve calculations is less than thenameplate rating of the wind resources. PJM has recently changed the default wind capabilityfrom 20 percent to 13 percent for new queue projects. MISO permits wind power providers todeclare up to 20 percent of nameplate capability as a capacity resource.The fuel mix of generating units in the RFC region is 15.0 percent nuclear, 3.0 percentconventional and pumped storage hydro, 47.0 percent coal, 6.0 percent oil, 28.0 percent gas, and1.0 percent wind and other. Since there currently are no adverse conditions affecting the resourceswithin the RFC region, the RFC assessment assumes that any future adverse weather or fuel supplyissues would be temporary in duration and limited in impact on resource availability, and will notaffect the long-term assessment.Within the PJM footprint, the capacity mix is likely to shift to more natural gas-fired combinedcycle and combustion turbine capacity. Continued reliance on steam (mainly coal) appears likely,although potential changes in environmental regulations may have an impact on coal unitsthroughout the footprint.Over the next seven years, there are plans within the RFC region for the addition of more than1,700 miles of high-voltage transmission lines (100 kV and above), and numerous new substationsand transformers expected to enhance and strengthen the bulk transmission system. PJM’s RTEPhas identified four major “backbone” projects, two of which were mentioned earlier.The Trans-Allegheny Interstate Line, scheduled for operation in 2011, consists of a new 500 kVcircuit from 502 Junction to Mt. Storm to Meadow Brook to Loudon. This project will relieveanticipated overloads and voltage problems in the Washington, D.C., area, including anticipatedoverloads expected in 2011 on the existing 500 kV network.The planned 130-mile, 500 kV circuit from Susquehanna to Lackawanna to Roseland will tie intothe existing 500 kV network and, with the addition of 500/230 kV transformers, will create astrong link from generation sources in Northeastern and North Central Pennsylvania into NewJersey. These facilities are expected to be in service by June 2012.68Pennsylvania Public Utility Commission
The Potomac-Appalachian Transmission Highline (PATH) transmission line consists of a 244-mileAmos to Bedington 765 kV line and a 92-mile, twin circuit 500 kV line from Bedington toKemptown. This project will reduce the west-to-east power flow on the existing PJM 500 kVtransmission paths and provide significant benefits to the constrained area of Washington andBaltimore. The Maryland Public Service Commission rejected the application of Alleghenyaffiliate, Potomac Edison Co., for a 20-mile segment of the line, and a new application has beenfiled. Also, the Virginia State Corporation Commission granted a motion of PATH AlleghenyVirginia Transmission Corp. to withdraw its application for a 31-mile segment. A new application,based on the 2010 RTEP analysis, is not expected before the third quarter of 2010. The facilitieswere originally expected to be in service in 2012. Based on the findings of the latest analyses, PJMis directing that PATH be placed into service by June 1, 2015.The fourth “backbone” project is the Mid-Atlantic Power Pathway (MAPP), consisting of a new190-mile 500 kV line beginning at Possum Point, Virginia, and terminating at Salem, New Jersey.The transmission system is expected to perform well over a wide range of operating conditions,provided new facilities go into service as scheduled, and transmission operators take appropriateaction, as needed, to control power flows, reactive reserves, and voltages.Electric Power Outlook for Pennsylvania 2009-2014 69
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ELECTRIC POWER OUTLOOKFOR PENNSYLVA
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adequate reserve margin. Net capaci
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Section 3 - Regional ReliabilityReg
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Regional Reliability OrganizationsI
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Figure 1 NERC regionsNote: The high
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Figure 3 PJM RTO service territoryO
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Figure 5 Mid-Atlantic Area National
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Trans-Allegheny Interstate LineThe
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September 2009. A Recommended Decis
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suppliers or purchased power from t
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AECs are earned when a qualified fa
Page 24 and 25: Smart Meters and Time-of-Use RatesS
Page 26 and 27: Section 2 - Historic and Forecast D
Page 28 and 29: Figure 10 Pennsylvania aggregate no
Page 30 and 31: Most utilities have employed a comb
Page 32 and 33: Figure 13 Pennsylvania residential
Page 34 and 35: Figure 15 Pennsylvania industrial u
Page 36 and 37: Figure 17 Average deviation in peak
Page 38 and 39: Summary of EDC DataThe following se
Page 40 and 41: Figure 27 Duquesne Light Company pe
Page 42 and 43: 2000. Average annual use per reside
Page 44 and 45: Figure 32 Metropolitan Edison Compa
Page 46 and 47: Figure 33 Pennsylvania Electric Com
Page 48 and 49: percent and an industrial growth ra
Page 50 and 51: Figure 38 Pennsylvania Power Compan
Page 52 and 53: Figure 39 PPL Electric Utilities Co
Page 54 and 55: PECO's 2009 summer peak load, occur
Page 56 and 57: Figure 44 PECO Energy Company avera
Page 58 and 59: commercial (24.3 percent). Average
Page 60 and 61: Figure 48 West Penn Power Company a
Page 62 and 63: Figure 50 UGI Utilities Inc. peak l
Page 64 and 65: sales, followed by residential with
Page 66 and 67: Figure 53 Wellsboro Electric Compan
Page 68 and 69: system and to make recommendations
Page 70 and 71: • Innovative resource planning an
Page 72 and 73: Figure 54 RFC 2009-2018 reserve mar
Page 76 and 77: PennsylvaniaThe Pennsylvania electr
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Page 80 and 81: Susquehanna Steam Electric Station,
Page 82 and 83: Table A01 Duquesne Light CompanyTab
Page 84 and 85: Table A09 Pennsylvania Electric Com
Page 86 and 87: Table A17 PPL Electric Utilities Co
Page 88 and 89: Table A25 West Penn Power CompanyTa
Page 90 and 91: Status of Pennsylvania's Plant Addi
Page 96 and 97: Appendix C - Existing Generating Fa
Page 98 and 99: Pennsylvania's Existing Electric Ge
Page 100: Nuclear Power Plants in Pennsylvani
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2010 Report - Pennsylvania Public Utility Commission

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