Common use of Performance Metrics Clause in Contracts

Performance Metrics. The “Performance Metrics” for the Performance Period are: (i) the JD Power Residential National Large Segment Survey for investor-owned utilities; (ii) the System Average Interruption Frequency Index (Major Events Excluded) (“XXXXX”); (iii) Arizona Public Service Company’s customer to employee improvement ratio; (iv) the OSHA rate (All Incident Injury Rate); (v) nuclear capacity factor; and (vi) coal capacity factor. (1) With respect to the Performance Metric described in clause (i) of this Subsection 6(a), the JD Power Residential National Large Segment Survey will provide data on an annual basis reflecting the Company’s percentile ranking, relative to other participating companies. (2) With respect to the Performance Metric described in clause (ii) of this Subsection 6(a), the Edison Electric Institute (“EEI”) will provide data on an annual basis regarding the XXXXX result of the participating companies; the Company will calculate its XXXXX result for the year in question and determine its percentile ranking based on the information provided by EEI. (3) With respect to the Performance Metric described in clause (iii) of this Subsection 6(a), SNL, an independent third party data system, will provide data on an annual basis regarding the customer and employee counts; the Company will use its customer and employee counts for the year in question and determine its percentile ranking based on the information provided by SNL. Only those companies whose customers and employees were included in the data provided by SNL in each of the years of the Performance Period will be considered. (4) With respect to the Performance Metric described in clause (iv) of this Subsection 6(a), EEI will provide data on an annual basis regarding the OSHA rate of the participating companies; the Company will calculate its OSHA rate for the year in question and determine its percentile ranking based on the information provided by EEI. (5) With respect to the Performance Metric described in clause (v) of this Subsection 6(a), SNL will provide data on an annual basis regarding the nuclear capacity factors of the participating nuclear plants; the Company will calculate its nuclear capacity factor for the year in question and determine its percentile ranking based on the information provided by SNL. Only those plants that were included in the data provided by SNL in each of the years of the Performance Period will be considered. (6) With respect to the Performance Metric described in clause (vi) of this Subsection 6(a), SNL will provide data on an annual basis regarding the coal capacity factors of the participating coal plants; the Company will calculate its coal capacity factor for the year in question and determine its percentile ranking based on the information provided by SNL. Only those plants that were included in the data provided by SNL in each of the years of the Performance Period will be considered. (7) The Company’s percentile ranking during the Performance Period for each Performance Metric will be the average of the Company’s percentile ranking for each Performance Metric during each of the three years of the Performance Period (each, an “Average Performance Metric”); provided, however, that if the third year of a Performance Metric is not calculable by December 15 of the following year, the Performance Metric shall consist of the three most recent years for which such Performance Metric is calculable. The Company’s “Average Performance,” for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b) above will be the average of the Average Performance Metrics. If only quartile, rather than percentile, rankings are available for a particular Performance Metric, the Average Performance Metric for any such Performance Metric shall be expressed as a percentile. For example, if the Performance Metric was in the top quartile for two Performance Periods and in the lowest quartile in the other Performance Period, the average of these quartiles would be 3 (the average of 4, 4, and 1) and the Average Performance Metric would be the 75th percentile (3 /4). The calculations in this Subsection 6(a)(7) will be verified by the Company’s internal auditors. (8) If either EEI or SNL discontinues providing the data specified above, the Committee shall select a data source that, in the Committee’s judgment, will provide data most comparable to the data provided by EEI or SNL, as the case may be. If the JD Power Residential National Large Segment Survey for investor-owned utilities (or a successor JD Power survey) is not available during each of the years of the Performance Period, the Performance Metric associated with the JD Power Residential Survey (Subsection 6(a)(1)) will be disregarded and not included in the Company’s Average Performance for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b).

Performance Metrics. The “Performance Metrics” for the Performance Period are: (i) the JD Power Residential National Large Segment Survey for investor-owned utilities; (ii) the System Average Interruption Frequency Index (Major Events Excluded) (“XXXXX”); (iiiii) Arizona Public Service Company’s customer to employee improvement ratio; (iviii) the OSHA rate (All Incident Injury Rate); (viv) nuclear capacity factor; and (viv) coal capacity factorthe X.X. Power Electric Utility Residential Study Overall Customer Satisfaction Index. (1) With respect to the Performance Metric described in clause (i) of this Subsection 6(a), the JD Power Residential National Large Segment Survey will provide data on an annual basis reflecting the Company’s percentile ranking, relative to other participating companies. (2) With respect to the Performance Metric described in clause (ii) of this Subsection 6(a), the Edison Electric Institute (“EEI”) will provide data on an annual basis regarding the XXXXX result of the participating companies; the Company will calculate its XXXXX result for the year in question and determine its percentile ranking based on the information provided by EEI. (32) With respect to the Performance Metric described in clause (iiiii) of this Subsection 6(a), SNLS&P Global Market Intelligence (“Market Intelligence”), an independent third party data system, will provide data on an annual basis regarding the customer and employee counts; the Company will use its customer and employee counts for the year in question and determine its percentile ranking based on the information provided by SNLMarket Intelligence. Only those companies whose customers and employees were included in the data provided by SNL Market Intelligence in each of the years of the Performance Period will be considered. (43) With respect to the Performance Metric described in clause (iviii) of this Subsection 6(a), EEI will provide data on an annual basis regarding the OSHA rate of the participating companies; the Company will calculate its OSHA rate for the year in question and determine its percentile ranking based on the information provided by EEI. (54) With respect to the Performance Metric described in clause (viv) of this Subsection 6(a), SNL Market Intelligence will provide data on an annual basis regarding the nuclear capacity factors of the participating nuclear plants; the Company will calculate its nuclear capacity factor for the year in question and determine its percentile ranking based on the information provided by SNLMarket Intelligence. Only those plants that were included in the data provided by SNL Market Intelligence in each of the years of the Performance Period will be considered. (65) With respect to the Performance Metric described in clause (viv) of this Subsection 6(a), SNL will provide data on an annual basis regarding the coal capacity factors of the participating coal plants; the Company will calculate its coal capacity factor for the year in question and determine its percentile ranking based on the information provided by SNL. Only those plants that were included in the data provided by SNL in each of the years of the Performance Period will be considered. (7) The Company’s percentile ranking during the Performance Period for each Performance Metric will be the average of the Company’s percentile ranking for each Performance Metric during each of the three years of the Performance Period (each, an “Average Performance Metric”); provided, however, that if the third year of a Performance Metric is not calculable by December 15 of the following year, the Performance Metric shall consist of the three most recent years for which such Performance Metric is calculable. The Company’s “Average Performance,” for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b) above will be the average of the Average Performance Metrics. If only quartile, rather than percentile, rankings are available for a particular Performance Metric, the Average Performance Metric for any such Performance Metric shall be expressed as a percentile. For example, if the Performance Metric was in the top quartile for two Performance Periods and in the lowest quartile in the other Performance Period, the average of these quartiles would be 3 (the average of 4, 4, and 1) and the Average Performance Metric would be the 75th percentile (3 /4). The calculations in this Subsection 6(a)(7) will be verified by the Company’s internal auditors. (8) If either EEI or SNL discontinues providing the data specified above, the Committee shall select a data source that, in the Committee’s judgment, will provide data most comparable to the data provided by EEI or SNL, as the case may be. If the JD Power Residential National Large Segment Survey for investor-owned utilities (or a successor JD Power survey) is not available during each of the years of the Performance Period, the Performance Metric associated with the JD Power Residential Survey (Subsection 6(a)(1)) will be disregarded and not included in the Company’s Average Performance for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b).X.

Performance Metrics. The “Performance Metrics” for the Performance Period are: (i) the JD Power Residential National Large Segment Survey for investor-owned utilities; (ii) the System Average Interruption Frequency Index (Major Events Excluded) (“XXXXX”); (iiiii) Arizona Public Service Company’s customer to employee improvement ratio; (iviii) the OSHA rate (All Incident Injury Rate); (viv) nuclear capacity factor; and (viv) coal capacity factor. (1) With respect to the Performance Metric described in clause (i) of this Subsection 6(a), the JD Power Residential National Large Segment Survey will provide data on an annual basis reflecting the Company’s percentile ranking, relative to other participating companies. (2) With respect to the Performance Metric described in clause (ii) of this Subsection 6(a), the Edison Electric Institute (“EEI”) will provide data on an annual basis regarding the XXXXX result of the participating companies; the Company will calculate its XXXXX result for the year in question and determine its percentile ranking based on the information provided by EEI. (32) With respect to the Performance Metric described in clause (iiiii) of this Subsection 6(a), SNLS&P Global Market Intelligence (“Market Intelligence”), an independent third party data system, will provide data on an annual basis regarding the customer and employee counts; the Company will use its customer and employee counts for the year in question and determine its percentile ranking based on the information provided by SNLMarket Intelligence. Only those companies whose customers and employees were included in the data provided by SNL Market Intelligence in each of the years of the Performance Period will be considered. (43) With respect to the Performance Metric described in clause (iviii) of this Subsection 6(a), EEI will provide data on an annual basis regarding the OSHA rate of the participating companies; the Company will calculate its OSHA rate for the year in question and determine its percentile ranking based on the information provided by EEI. (54) With respect to the Performance Metric described in clause (viv) of this Subsection 6(a), SNL Market Intelligence will provide data on an annual basis regarding the nuclear capacity factors of the participating nuclear plants; the Company will calculate its nuclear capacity factor for the year in question and determine its percentile ranking based on the information provided by SNLMarket Intelligence. Only those plants that were included in the data provided by SNL Market Intelligence in each of the years of the Performance Period will be considered. (65) With respect to the Performance Metric described in clause (viv) of this Subsection 6(a), SNL Market Intelligence will provide data on an annual basis regarding the coal capacity factors of the participating coal plants; the Company will calculate its coal capacity factor for the year in question and determine its percentile ranking based on the information provided by SNLMarket Intelligence. Only those plants that were included in the data provided by SNL Market Intelligence in each of the years of the Performance Period will be considered. (76) The Company’s percentile ranking during the Performance Period for each Performance Metric will be the average of the Company’s percentile ranking for each Performance Metric during each of the three years of the Performance Period (each, an “Average Performance Metric”); provided, however, that if the third year of a Performance Metric is not calculable by December 15 of the following year, the Performance Metric shall consist of the three most recent years for which such Performance Metric is calculable. The Company’s “Average Performance,” for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b) above will be the average of the Average Performance Metrics. If only quartile, rather than percentile, rankings are available for a particular Performance Metric, the Average Performance Metric for any such Performance Metric shall be expressed as a percentile. For example, if the Performance Metric was in the top quartile for two Performance Periods and in the lowest quartile in the other Performance Period, the average of these quartiles would be 3 (the average of 4, 4, and 1) and the Average Performance Metric would be the 75th percentile (3 /4). The calculations in this Subsection 6(a)(76(a)(6) will be verified by the Company’s internal auditors. (8) 7) If either EEI or SNL Market Intelligence discontinues providing the data specified above, the Committee shall select a data source that, in the Committee’s judgment, will provide data most comparable to the data provided by EEI or SNLMarket Intelligence, as the case may be. If the JD Power Residential National Large Segment Survey for investor-owned utilities (or a successor JD Power survey) is not available during each of the years of the Performance Period, the Performance Metric associated with the JD Power Residential Survey (Subsection 6(a)(1)) will be disregarded and not included in the Company’s Average Performance for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b).

Performance Metrics. The “Performance Metrics” for the Performance Period are: (i) the JD Power Residential National Large Segment Survey for investor-owned utilities; (ii) the System Average Interruption Frequency Index (Major Events Excluded) (“XXXXX”); (iiiii) Arizona Public Service Company’s customer to employee improvement ratio; (iviii) the OSHA rate (All Incident Injury Rate); (viv) nuclear capacity factor; and (viv) coal capacity factor. (1) With respect to the Performance Metric described in clause (i) of this Subsection 6(a), the JD Power Residential National Large Segment Survey will provide data on an annual basis reflecting the Company’s percentile ranking, relative to other participating companies. (2) With respect to the Performance Metric described in clause (ii) of this Subsection 6(a), the Edison Electric Institute (“EEI”) will provide data on an annual basis regarding the XXXXX result of the participating companies; the Company will calculate its XXXXX result for the year in question and determine its percentile ranking based on the information provided by EEI. (32) With respect to the Performance Metric described in clause (iiiii) of this Subsection 6(a), SNL, an independent third party data system, will provide data on an annual basis regarding the customer and employee counts; the Company will use its customer and employee counts for the year in question and determine its percentile ranking based on the information provided by SNL. Only those companies whose customers and employees were included in the data provided by SNL in each of the years of the Performance Period will be considered. (43) With respect to the Performance Metric described in clause (iviii) of this Subsection 6(a), EEI will provide data on an annual basis regarding the OSHA rate of the participating companies; the Company will calculate its OSHA rate for the year in question and determine its percentile ranking based on the information provided by EEI. (54) With respect to the Performance Metric described in clause (viv) of this Subsection 6(a), SNL will provide data on an annual basis regarding the nuclear capacity factors of the participating nuclear plants; the Company will calculate its nuclear capacity factor for the year in question and determine its percentile ranking based on the information provided by SNL. Only those plants that were included in the data provided by SNL in each of the years of the Performance Period will be considered. (65) With respect to the Performance Metric described in clause (viv) of this Subsection 6(a), SNL will provide data on an annual basis regarding the coal capacity factors of the participating coal plants; the Company will calculate its coal capacity factor for the year in question and determine its percentile ranking based on the information provided by SNL. Only those plants that were included in the data provided by SNL in each of the years of the Performance Period will be considered. (76) The Company’s percentile ranking during the Performance Period for each Performance Metric will be the average of the Company’s percentile ranking for each Performance Metric during each of the three years of the Performance Period (each, an “Average Performance Metric”); provided, however, that if the third year of a Performance Metric is not calculable by December 15 of the following year, the Performance Metric shall consist of the three most recent years for which such Performance Metric is calculable. The Company’s “Average Performance,” for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b) above will be the average of the Average Performance Metrics. If only quartile, rather than percentile, rankings are available for a particular Performance Metric, the Average Performance Metric for any such Performance Metric shall be expressed as a percentile. For example, if the Performance Metric was in the top quartile for two Performance Periods and in the lowest quartile in the other Performance Period, the average of these quartiles would be 3 (the average of 4, 4, and 1) and the Average Performance Metric would be the 75th percentile (3 /4). The calculations in this Subsection 6(a)(76(a)(6) will be verified by the Company’s internal auditors. (8) 7) If either EEI or SNL discontinues providing the data specified above, the Committee shall select a data source that, in the Committee’s judgment, will provide data most comparable to the data provided by EEI or SNL, as the case may be. If the JD Power Residential National Large Segment Survey for investor-owned utilities (or a successor JD Power survey) is not available during each of the years of the Performance Period, the Performance Metric associated with the JD Power Residential Survey (Subsection 6(a)(1)) will be disregarded and not included in the Company’s Average Performance for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b).

Performance Metrics. The “Performance Metrics” for the Performance Period are: are (i) the JD Power Residential National Large Segment Survey for investor-owned utilitiesutilities in the Western Region; (ii) the System Average Interruption Frequency Index (Major Events Excluded) (“XXXXX”); (iii) Arizona Public Service Company’s customer to employee improvement ratio; (iv) the OSHA rate (All Incident Injury Rate); (v) nuclear capacity factor; and (vi) coal capacity factor. (1) With respect to the Performance Metric described in clause (i) of this Subsection 6(a), the JD Power Residential National Large Segment Survey will provide data on an annual basis reflecting the Company’s percentile ranking, relative to other participating companies. (2) With respect to the Performance Metric described in clause (ii) of this Subsection 6(a), the Edison Electric Institute (“EEI”) will provide data on an annual basis regarding the quartile rankings (or percentile rankings, if available) associated with the XXXXX result of the participating companies; the Company will calculate determine its XXXXX result for the year in question and determine its quartile ranking (or percentile ranking ranking, if percentile rankings are available) based on the information provided by EEI. (3) With respect to the Performance Metric described in clause (iii) of this Subsection 6(a), SNL, an independent third party data system, will provide data on an annual basis regarding the customer and employee counts; the Company will use its customer and employee counts for the year in question and determine its percentile ranking based on the information provided by SNL. Only those companies whose customers and employees were included in the data provided by SNL in each of the years of the Performance Period will be considered. (4) With respect to the Performance Metric described in clause (iv) of this Subsection 6(a), EEI will provide data on an annual basis regarding the OSHA rate of the participating companies; the Company will calculate its OSHA rate for the year in question and determine its percentile ranking based on the information provided by EEI. (5) With respect to the Performance Metric described in clause (v) of this Subsection 6(a), SNL will provide data on an annual basis regarding the nuclear capacity factors of the participating nuclear plants; the Company will calculate its nuclear capacity factor for the year in question and determine its percentile ranking based on the information provided by SNL. Only those plants that were included in the data provided by SNL in each of the years of the Performance Period will be considered. (6) With respect to the Performance Metric described in clause (vi) of this Subsection 6(a), SNL will provide data on an annual basis regarding the coal capacity factors of the participating coal plants; the Company will calculate its coal capacity factor for the year in question and determine its percentile ranking based on the information provided by SNL. Only those plants that were included in the data provided by SNL in each of the years of the Performance Period will be considered. (7) The Company’s percentile ranking during the Performance Period for each Performance Metric will be the average of the Company’s percentile ranking for each Performance Metric during each of the three years of the Performance Period (each, an “Average Performance Metric”); provided, however, that if the third year of a Performance Metric for 2012 is not calculable by December 15 of the following year15, 2013, the Performance Metric shall consist of the three most recent years for which such Performance Metric is calculable. The Company’s “Average Performance,” for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b) above will be the average of the Average Performance Metrics. If only quartile, rather than percentile, rankings are available for a particular Performance Metric, the Average Performance Metric for any such Performance Metric shall be expressed as a percentile. For example, if the Performance Metric was in the top quartile for two Performance Periods and in the lowest quartile in the other Performance Period, the average of these quartiles would be 3 (the average of 4, 4, and 1) and the Average Performance Metric would be the 75th percentile (3 /4). The calculations in this Subsection 6(a)(7) will be verified by the Company’s internal auditors. (8) If either EEI or SNL discontinues providing the data specified above, the Committee shall select a data source that, in the Committee’s judgment, will provide data most comparable to the data provided by EEI or SNL, as the case may be. If the JD Power Residential National Large Segment Survey for investor-owned utilities in the Western Region (or a successor JD Power survey) is not available during each of the years of the Performance Period, the Performance Metric associated with the JD Power Residential Survey (Subsection 6(a)(16(b)(1)) will be disregarded and not included in the Company’s Average Performance for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b).

Performance Metrics. The “Performance Metrics” for the Performance Period are: are (i) the JD Power Residential National Large Segment Survey for investor-owned utilitiesutilities in the Western Region; (ii) the System Average Interruption Frequency Index (Major Events Excluded) (“XXXXX”); (iii) Arizona Public Service Company’s customer to employee improvement ratio; (iv) the OSHA rate (All Incident Injury Rate); (v) nuclear capacity factor; and (vi) coal capacity factor. (1) With respect to the Performance Metric described in clause (i) of this Subsection 6(a6(b), the JD Power Residential National Large Segment Survey will provide data on an annual basis reflecting the Company’s percentile ranking, relative to other participating companies. (2) With respect to the Performance Metric described in clause (ii) of this Subsection 6(a6(b), the Edison Electric Institute (“EEI”) will provide data on an annual basis regarding the quartile rankings (or percentile rankings, if available) associated with the XXXXX result of the participating companies; the Company will calculate determine its XXXXX result for the year in question and determine its quartile ranking (or percentile ranking ranking, if percentile rankings are available) based on the information provided by EEI. (3) With respect to the Performance Metric described in clause (iii) of this Subsection 6(a6(b), SNL, an independent third party data system, will provide data on an annual basis regarding the customer and employee counts; the Company will use its customer and employee counts for the year in question and determine its percentile ranking based on the information provided by SNL. Only those companies whose customers and employees were included in the data provided by SNL in each of the years of the Performance Period will be considered. (4) With respect to the Performance Metric described in clause (iv) of this Subsection 6(a6(b), EEI will provide data on an annual basis regarding the OSHA rate of the participating companies; the Company will calculate its OSHA rate for the year in question and determine its percentile ranking based on the information provided by EEI. (5) With respect to the Performance Metric described in clause (v) of this Subsection 6(a6(b), SNL will provide data on an annual basis regarding the nuclear capacity factors of the participating nuclear plants; the Company will calculate its nuclear capacity factor for the year in question and determine its percentile ranking based on the information provided by SNL. Only those plants that were included in the data provided by SNL in each of the years of the Performance Period will be considered. (6) With respect to the Performance Metric described in clause (vi) of this Subsection 6(a6(b), SNL will provide data on an annual basis regarding the coal capacity factors of the participating coal plants; the Company will calculate its coal capacity factor for the year in question and determine its percentile ranking based on the information provided by SNL. Only those plants that were included in the data provided by SNL in each of the years of the Performance Period will be considered. (7) The Company’s percentile ranking during the Performance Period for each Performance Metric will be the average of the Company’s percentile ranking for each Performance Metric during each of the three years of the Performance Period (each, an “Average Performance Metric”); provided, however, that if the third year of a Performance Metric for 2011 is not calculable by December 15 of the following year15, 2012, the Performance Metric shall consist of the three most recent years for which such Performance Metric is calculable. The Company’s “Average Performance,” for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b) above will be the average of the Average Performance Metrics. If only quartile, rather than percentile, rankings are available for a particular Performance Metric, the Average Performance Metric for any such Performance Metric shall be expressed as a percentile. For example, if the Performance Metric was in the top quartile for two Performance Periods and in the lowest quartile in the other Performance Period, the average of these quartiles would be 3 (the average of 4, 4, and 1) and the Average Performance Metric would be the 75th percentile (3 /4). The calculations in this Subsection 6(a)(76(b)(7) will be verified by the Company’s internal auditors. (8) If either EEI or SNL discontinues providing the data specified above, the Committee shall select a data source that, in the Committee’s judgment, will provide data most comparable to the data provided by EEI or SNL, as the case may be. If the JD Power Residential National Large Segment Survey for investor-owned utilities in the Western Region (or a successor JD Power survey) is not available during each of the years of the Performance Period, the Performance Metric associated with the JD Power Residential Survey (Subsection 6(a)(16(b)(1)) will be disregarded and not included in the Company’s Average Performance for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b).

Performance Metrics. The “Performance Metrics” for the Performance Period are: (i) the JD Power Residential National Large Segment Survey for investor-owned utilitiesutilities in the Western Region; (ii) the System Average Interruption Frequency Index (Major Events Excluded) (“XXXXX”); (iii) Arizona Public Service Company’s customer to employee improvement ratio; (iv) the OSHA rate (All Incident Injury Rate); (v) nuclear capacity factor; and (vi) coal capacity factor. (1) With respect to the Performance Metric described in clause (i) of this Subsection 6(a), the JD Power Residential National Large Segment Survey will provide data on an annual basis reflecting the Company’s percentile ranking, relative to other participating companies. (2) With respect to the Performance Metric described in clause (ii) of this Subsection 6(a), the Edison Electric Institute (“EEI”) will provide data on an annual basis regarding the quartile rankings (or percentile rankings, if available) associated with the XXXXX result of the participating companies; the Company will calculate determine its XXXXX result for the year in question and determine its quartile ranking (or percentile ranking ranking, if percentile rankings are available) based on the information provided by EEI. (3) With respect to the Performance Metric described in clause (iii) of this Subsection 6(a), SNL, an independent third party data system, will provide data on an annual basis regarding the customer and employee counts; the Company will use its customer and employee counts for the year in question and determine its percentile ranking based on the information provided by SNL. Only those companies whose customers and employees were included in the data provided by SNL in each of the years of the Performance Period will be considered. (4) With respect to the Performance Metric described in clause (iv) of this Subsection 6(a), EEI will provide data on an annual basis regarding the OSHA rate of the participating companies; the Company will calculate its OSHA rate for the year in question and determine its percentile ranking based on the information provided by EEI. (5) With respect to the Performance Metric described in clause (v) of this Subsection 6(a), SNL will provide data on an annual basis regarding the nuclear capacity factors of the participating nuclear plants; the Company will calculate its nuclear capacity factor for the year in question and determine its percentile ranking based on the information provided by SNL. Only those plants that were included in the data provided by SNL in each of the years of the Performance Period will be considered. (6) With respect to the Performance Metric described in clause (vi) of this Subsection 6(a), SNL will provide data on an annual basis regarding the coal capacity factors of the participating coal plants; the Company will calculate its coal capacity factor for the year in question and determine its percentile ranking based on the information provided by SNL. Only those plants that were included in the data provided by SNL in each of the years of the Performance Period will be considered. (7) The Company’s percentile ranking during the Performance Period for each Performance Metric will be the average of the Company’s percentile ranking for each Performance Metric during each of the three years of the Performance Period (each, an “Average Performance Metric”); provided, however, that if the third year of a Performance Metric for 2012 is not calculable by December 15 of the following year15, 2013, the Performance Metric shall consist of the three most recent years for which such Performance Metric is calculable. The Company’s “Average Performance,” for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b) above will be the average of the Average Performance Metrics. If only quartile, rather than percentile, rankings are available for a particular Performance Metric, the Average Performance Metric for any such Performance Metric shall be expressed as a percentile. For example, if the Performance Metric was in the top quartile for two Performance Periods and in the lowest quartile in the other Performance Period, the average of these quartiles would be 3 (the average of 4, 4, and 1) and the Average Performance Metric would be the 75th percentile (3 /4). The calculations in this Subsection 6(a)(7) will be verified by the Company’s internal auditors. (8) If either EEI or SNL discontinues providing the data specified above, the Committee shall select a data source that, in the Committee’s judgment, will provide data most comparable to the data provided by EEI or SNL, as the case may be. If the JD Power Residential National Large Segment Survey for investor-owned utilities in the Western Region (or a successor JD Power survey) is not available during each of the years of the Performance Period, the Performance Metric associated with the JD Power Residential Survey (Subsection 6(a)(16(b)(1)) will be disregarded and not included in the Company’s Average Performance for purposes of determining any Base Grant adjustments pursuant to Subsection 5(b).