Key Industry Drivers of Change In early 2018, MISO released the RAN Issues Statement Whitepaper, which outlined drivers of change with a significant impact on current operations and practices. While RAN has implemented multiple solutions, those five Drivers of Change are still relevant and are being accelerated by the 3Ds. The growth of variable energy resources (related to De-marginalization) along with the proliferation of Load-Modifying Resources (LMRs) and other Distributed Energy Resources (Decentralization) are clearly linked to Drivers of Change 1, 3, and 5. DRIVER ① AGING AND RETIREMENT OF THE PORTFOLIO’S GENERATING UNITS Retirements and increasing outage levels (both planned and forced) require MISO to operate with less available capacity than in the past. The effect is a reduction in the redundancy provided by additional resource availability. For example, daily average energy offers were down 8 GW in Planning Year 2016/17 over Planning Year 2015/16. This reduction reflects a 4 GW net resource retirement and a 4 GW (23 percent) increase in the average MWs on outage. Total Approved Retirement since 2005 (24.3 GW) 2% 2% 1% Generation Retirement Trend by Fuel Type (Capacity in MW) 1081 22% 786 242 13 7 73% 98 234 1024 880 931 1929 7001 4575 4410 953 170 Coal Gas Nuclear Oil Diesel Other DRIVER ② OUTAGE CORRELATION The MISO system has year-round load and supply needs, but is planned with a summer-focused capacity commitment. Lower overall capacity levels and higher outage rates have reduced available capacity in non-summer periods. As a result, the MISO footprint has experienced frequent MaxGen emergencies outside summer. This imposes a growing challenge to ensure sufficient available capacity in those periods. Of the 27 recent MaxGen emergencies, 74 percent of them occurred outside of the summer months. 7 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
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