part i item 1 entergy corporation , utility operating companies , and system energy entergy new orleans provides electric and gas service in the city of new orleans pursuant to indeterminate permits set forth in city ordinances ( except electric service in algiers , which is provided by entergy louisiana ) . these ordinances contain a continuing option for the city of new orleans to purchase entergy new orleans 2019s electric and gas utility properties . entergy texas holds a certificate of convenience and necessity from the puct to provide electric service to areas within approximately 27 counties in eastern texas , and holds non-exclusive franchises to provide electric service in approximately 68 incorporated municipalities . entergy texas was typically granted 50-year franchises , but recently has been receiving 25-year franchises . entergy texas 2019s electric franchises expire during 2013-2058 . the business of system energy is limited to wholesale power sales . it has no distribution franchises . property and other generation resources generating stations the total capability of the generating stations owned and leased by the utility operating companies and system energy as of december 31 , 2011 , is indicated below: .
what portion of the total capabilities is generated from nuclear station for entergy as a whole?
( 1 ) 201cowned and leased capability 201d is the dependable load carrying capability as demonstrated under actual operating conditions based on the primary fuel ( assuming no curtailments ) that each station was designed to utilize . the entergy system's load and capacity projections are reviewed periodically to assess the need and timing for additional generating capacity and interconnections . these reviews consider existing and projected demand , the availability and price of power , the location of new load , and the economy . summer peak load in the entergy system service territory has averaged 21246 mw from 2002-2011 . in the 2002 time period , the entergy system's long-term capacity resources , allowing for an adequate reserve margin , were approximately 3000 mw less than the total capacity required for peak period demands . in this time period the entergy system met its capacity shortages almost entirely through short-term power purchases in the wholesale spot market . in the fall of 2002 , the entergy system began a program to add new resources to its existing generation portfolio and began a process of issuing requests for proposals ( rfp ) to procure supply-side resources from sources other than the spot market to meet the unique regional needs of the utility operating companies . the entergy system has adopted a long-term resource strategy that calls for the bulk of capacity needs to be met through long-term resources , whether owned or contracted . entergy refers to this strategy as the "portfolio transformation strategy" . over the past nine years , portfolio transformation has resulted in the addition of about 4500 mw of new long-term resources . these figures do not include transactions currently pending as a result of the summer 2009 rfp . when the summer 2009 rfp transactions are included in the entergy system portfolio of long-term resources and adjusting for unit deactivations of older generation , the entergy system is approximately 500 mw short of its projected 2012 peak load plus reserve margin . this remaining need is expected to be met through a nuclear uprate at grand gulf and limited-term resources . the entergy system will continue to access the spot power market to economically .