Investor Presentaiton

BONNEVILLE POWER ADMINISTRATION Historical Average Transmission Rates Nominal (Actual) and Real (Inflation-Adjusted) Historical Firm P2P Rate Transmission rates have remained relatively stable on an inflation-adjusted basis 1.95 Rate ($ per KW-month) 1.75 1.55 1.35 1.15 0.95 0.75 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 Nominal$ Real dollars derived using the BEA Implicit Price Deflator for GDP - - Real 2000$ 25

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