Read the following texts and table with financial data from an S&P 500 earnings report carefully.Based on the question-answer history (if provided), answer the last question. The answer may require mathematical calculation based on the data provided.


part i item 1 entergy corporation , utility operating companies , and system energy entergy wholesale commodities during 2010 entergy integrated its non-utility nuclear and its non-nuclear wholesale assets businesses into a new organization called entergy wholesale commodities . entergy wholesale commodities includes the ownership and operation of six nuclear power plants , five of which are located in the northeast united states , with the sixth located in michigan , and is primarily focused on selling electric power produced by those plants to wholesale customers . entergy wholesale commodities 2019 revenues are primarily derived from sales of energy and generation capacity from these plants . entergy wholesale commodities also provides operations and management services , including decommissioning services , to nuclear power plants owned by other utilities in the united states . entergy wholesale commodities also includes the ownership of , or participation in joint ventures that own , non-nuclear power plants and the sale to wholesale customers of the electric power produced by these plants . property nuclear generating stations entergy wholesale commodities includes the ownership of the following nuclear power plants : power plant market service acquired location capacity- reactor type license expiration . <table class='wikitable'><tr><td>1</td><td>power plant</td><td>market</td><td>inserviceyear</td><td>acquired</td><td>location</td><td>capacity-reactor type</td><td>licenseexpirationdate</td></tr><tr><td>2</td><td>pilgrim</td><td>is0-ne</td><td>1972</td><td>july 1999</td><td>plymouth ma</td><td>688 mw - boiling water</td><td>2012</td></tr><tr><td>3</td><td>fitzpatrick</td><td>nyiso</td><td>1975</td><td>nov . 2000</td><td>oswego ny</td><td>838 mw - boiling water</td><td>2034</td></tr><tr><td>4</td><td>indian point 3</td><td>nyiso</td><td>1976</td><td>nov . 2000</td><td>buchanan ny</td><td>1041 mw - pressurized water</td><td>2015</td></tr><tr><td>5</td><td>indian point 2</td><td>nyiso</td><td>1974</td><td>sept . 2001</td><td>buchanan ny</td><td>1028 mw - pressurized water</td><td>2013</td></tr><tr><td>6</td><td>vermont yankee</td><td>is0-ne</td><td>1972</td><td>july 2002</td><td>vernon vt</td><td>605 mw - boiling water</td><td>2032</td></tr><tr><td>7</td><td>palisades</td><td>miso</td><td>1971</td><td>apr . 2007</td><td>south haven mi</td><td>811 mw - pressurized water</td><td>2031</td></tr></table> entergy wholesale commodities also includes the ownership of two non-operating nuclear facilities , big rock point in michigan and indian point 1 in new york that were acquired when entergy purchased the palisades and indian point 2 nuclear plants , respectively . these facilities are in various stages of the decommissioning process . the nrc operating license for vermont yankee was to expire in march 2012 . in march 2011 the nrc renewed vermont yankee 2019s operating license for an additional 20 years , as a result of which the license now expires in 2032 . for additional discussion regarding the continued operation of the vermont yankee plant , see 201cimpairment of long-lived assets 201d in note 1 to the financial statements . the operating licenses for pilgrim , indian point 2 , and indian point 3 expire between 2012 and 2015 . under federal law , nuclear power plants may continue to operate beyond their license expiration dates while their renewal applications are pending nrc approval . various parties have expressed opposition to renewal of the licenses . with respect to the pilgrim license renewal , the atomic safety and licensing board ( aslb ) of the nrc , after issuing an order denying a new hearing request , terminated its proceeding on pilgrim 2019s license renewal application . with the aslb process concluded the proceeding , including appeals of certain aslb decisions , is now before the nrc . in april 2007 , entergy submitted an application to the nrc to renew the operating licenses for indian point 2 and 3 for an additional 20 years . the aslb has admitted 21 contentions raised by the state of new york or other parties , which were combined into 16 discrete issues . two of the issues have been resolved , leaving 14 issues that are currently subject to aslb hearings . in july 2011 , the aslb granted the state of new york 2019s motion for summary disposition of an admitted contention challenging the adequacy of a section of indian point 2019s environmental analysis as incorporated in the fseis ( discussed below ) . that section provided cost estimates for severe accident mitigation alternatives ( samas ) , which are hardware and procedural changes that could be .
Question: of how many years is the period of the lease for pilgrim?
Answer: 13.0
Question: and of how many years is the one for fitzpatrick?

34.0