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Fuel Index <br />The fuel rate adjustment index is calculated using the "average annual change' as <br />demonstrated in the example below, measured for the 12 months ending December prior to <br />the Rate Year anniversary date compared to the 12 months ending December in the previous <br />year. The Bureau of Labor Statistics publishes the Producer Price Index for Fuels and Related <br />Products and Power - Commercial Natural Gas. <br />In the example below, the average annual index for the 12 months ended December 2017 of <br />189.1 is entered in Column B, Row 2, "New Index Value," of the example rate adjustment <br />formula in Exhibit 2A, and the average annual index for the 12 months ended December 2016 <br />of 172.1 is entered in Column A, Row 2, "Old Index Value" in Exhibit 2A. This would have <br />resulted in a 9.9% increase to the fuel component of rates as calculated in Column C, Row 2 of <br />Exhibit 2A. <br />Producer Price Index - Fuels and Related Products and Power - Commercial Natural Gas <br />WPU05522101 <br />PPI Commodity Data <br />Original Data Value <br />Series Id: <br />WPUD5522101 <br />Not Seasonally <br />Adjusted <br />Series Title: <br />PPI Commodity date for Fuels and related products <br />Group: <br />Fuels and related products and <br />povrer <br />Item: <br />Commercial natural gas <br />Base Date: <br />r199012 <br />Years: <br />20111o2017 <br />Annual <br />Year <br />Jan Feb mar <br />Apr <br />may <br />Jun <br />Jul <br />Aug <br />Sep <br />Oct <br />Nov <br />Dec <br />Average <br />2011 <br />203.9 206.1 202.2 <br />201.2 <br />197.6 <br />200.4 <br />206.0 <br />201.4 <br />198.0 <br />1MA <br />196.1 <br />193.9 <br />200.1 <br />2012 <br />190.0 184.8 180.2 <br />173.8 <br />165.5 <br />160.4 <br />172.9 <br />176.2 <br />174.2 <br />176.5 <br />184.4 <br />184.7 <br />177.7 <br />2013 <br />184.3 185.4 183.2 <br />187.5 <br />190.8 <br />189.7 <br />186.2 <br />184.3 <br />181.9 <br />183.6 <br />190.3 <br />189.3 <br />186.4 <br />2014 <br />195.0 202.2 216.3 <br />209.1 <br />206.2 <br />201.6 <br />203,1 <br />197.1 <br />195.3 <br />191.4 <br />193.6 <br />198.3 <br />200.8 <br />2016 <br />196.6 189.8 183.1 <br />175.0 <br />169.3 <br />173.6 <br />173.5 <br />174.9 <br />171.0 <br />170.4 <br />171.1 <br />171.1 <br />176.6 <br />2016 <br />173.1 171.4 184.2 <br />163.2 <br />161.4 <br />161.7 <br />170.3 <br />176.5 <br />176.6 <br />178.5 <br />183.4 <br />184.5 <br />172.1 <br />2017 <br />192.1 190.7 188.5 <br />188.8 <br />188.1 <br />190.2 <br />187.4 <br />187.3 <br />185.8 <br />184.8 <br />190.9 <br />194.0 <br />189.1 <br />9.9% <br />August 17, 2021 2-7 City of Santa Ana <br />