2010 Report - Pennsylvania Public Utility Commission

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Trans-Allegheny Interstate LineThe RTEP recommended that Allegheny Power build facilities constituting the Trans-AlleghenyInterstate Line (TrAIL). TrAIL was to extend from Southwestern Pennsylvania (37 miles) to WestVirginia (114 miles) to Northern Virginia (28 miles). In-service dates ranged from 2009 to mid-2010. The 2008 RTEP retool analysis of 2011 system conditions confirmed the need for this lineby June 1, 2011, to address reliability criteria violations on the Mt. Storm-Doubs 500 kV line.In support of the TrAIL project, Trans-Allegheny Interstate Line Company (TrAILCo), anAllegheny Energy subsidiary, filed an application 20 with the Commission on April 13, 2007,proposing the construction of one 500 kV and three 138 kV transmission lines in Washington andGreene counties. The project included a substation in Washington County (Prexy Substation), asubstation in Greene County (502 Junction Substation), three 138 kV transmission lines and a 36-mile 500 kV transmission line.Evidentiary hearings in all three states were concluded by April 2008. In a RecommendedDecision issued Aug. 21, 2008, the Commission’s ALJs recommended that the application bedenied because TrAILCo had failed to prove a need for the facilities. A Partial SettlementAgreement was reached for the Pennsylvania portion of the TrAIL Project, involving approval of a1.2-mile segment of the 500 kV line extending from a new substation in Greene County,Pennsylvania (the 502 Junction), to the West Virginia border. On Nov. 13, 2008, the Commissionapproved the Partial Settlement Agreement and stayed the application with regard to the Prexyfacilities pending the outcome of a collaborative set forth in the Partial Settlement Agreement andthe filing of a new or amended application. On July 13, 2009, a Joint Petition for Settlement wasfiled with the Commission, agreeing to an alternative, more cost-effective solution to NERCReliability Standard violations, including a set of local 138 kV transmission upgrades. By Order ofAug. 25, 2009, the record was reopened for the purpose of amending the application and approvingthe Settlement. An Amendment to Application was filed on Oct. 13, 2009.The 2009 RTEP stated that the alternative solution did not resolve several violations outside thecontested area of the settlement, requiring additional upgrades that the Prexy-502 Junction wouldhave otherwise resolved. The upgrades, including the construction of a new Osage-Whiteley 138kV line and a new 138 kV Braddock substation, are shown in Figure 6.20 Docket No. A-110172, et al.10Pennsylvania Public Utility Commission
Figure 6 Prexy replacement upgrades (in yellow)Susquehanna-Roseland 500 kV LineThe second major transmission project identified by the RTEP describes a new 500 kV circuitwhich is proposed to run 120 miles from the Susquehanna 500 kV substation in Salem Township,Luzerne County, near Berwick, through portions of Luzerne, Lackawanna, Wayne, Pike andMonroe counties to the Delaware River and then eastward to Roseland, New Jersey in the PublicService Electric & Gas Co. system.According to the 2008 RTEP, the Susquehanna-Roseland 500 kV project would resolve 21 of 23identified reliability criteria violations in Eastern Pennsylvania and New Jersey beginning in 2012.A March 2009 RTEP retool analysis included 13 potential overloads due to single contingencies,and 10 potential violations due to multiple contingencies. The 2009 RTEP, issued Feb. 26, 2010,re-validated the required June 1, 2012, in-service date for the line. The estimated cost to designand construct the Pennsylvania portion of the line (101 miles) is $510 million.PPL conducted a multi-faceted analysis to determine the preferred route. Three alternative routeswere selected for detailed examination. Following an analysis of comments from the public,societal concerns, environmental impacts, engineering considerations and cost, PPL selected RouteB as the preferred route. See Figure 7.On Jan. 6, 2009, PPL filed its Application for authorization to construct the line and a newsubstation in Blakely Borough, Lackawanna County. 21 Evidentiary hearings were held in21 Docket No. A-2009-2082652.Electric Power Outlook for Pennsylvania 2009-2014 11
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Figure 53 Wellsboro Electric Compan
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system and to make recommendations
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• Innovative resource planning an
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Figure 54 RFC 2009-2018 reserve mar
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The MISO reserve margin for existin
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PennsylvaniaThe Pennsylvania electr
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GWh more than they generated. Figur
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Susquehanna Steam Electric Station,
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Table A01 Duquesne Light CompanyTab
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Table A09 Pennsylvania Electric Com
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Table A17 PPL Electric Utilities Co
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Table A25 West Penn Power CompanyTa
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Status of Pennsylvania's Plant Addi
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Appendix C - Existing Generating Fa
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Pennsylvania's Existing Electric Ge
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Nuclear Power Plants in Pennsylvani
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2010 Report - Pennsylvania Public Utility Commission

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