Discussion of WECC Paths Alberta-British Columbia Path 1
Discussion of WECC Paths Alberta-British Columbia Path 1 Discussion of WECC Paths Alberta-British Columbia Path 1
Discussion of WECC Paths Alberta – British Columbia - Path 1 Table 1: Path 1 Characteristics Path Characteristics Rating E to W Rating W to E Max Voltage 1000 MW 1200 MW 500 kV Figure 1: Path 1 Definition Historical Congestion Path 1 is historically congested as demonstrated by the block hour net schedule and block hour maximum schedule analysis conducted in part of the 2009 TEPPC Transmission Path Utilization Study. Alberta – British Columbia was identified as the 10 th most heavily used path in the Western Interconnection in the 2009 study. Actual flow and schedule data can be found in the duration plot in Figure 2. Although informative, the plot does not necessarily reflect the metrics that support the path as historically congested. Path 1 was not analyzed in the 2008 and 2007 TEPPC Transmission Path Utilization Studies. Page 2 of 2
Figure 2: Path 1 Actual Flow Duration Plot Discussion of WECC Paths Alberta – British Columbia - Path 1 Project Development The following four projects were determined by stakeholders to be the most likely to have an impact on Path 1. • MATL (SCG Foundational Project) • NorthernLights (Studied in 2010 Study Program) • Triton HVDC Sea Cable Project • West Coast Cable Because the MATL project was included in the 2020 dataset, but not the 2019 dataset, some of the reduced congestion along Path 1 observed in the 2020 cases can be attributed to the utilization of the MATL project. This is further explained in the following sections. Additionally, the NorthernLights project was implemented with the 2019 Alberta Resource Relocation case as part of the 2010 Study Program. Congestion impacts on Path 1 from this study case are presented in the “Future Congestion Analysis” under “Project Development Impact”. Future Congestion Analysis The forward looking congestion analysis draws upon study case results from production cost model runs using TEPPCs 2019 and 2020 datasets. This work was done as a part of the 2010 Study Program. Page 3 of 3
<strong>Discussion</strong> <strong>of</strong> <strong>WECC</strong> <strong><strong>Path</strong>s</strong><br />
<strong>Alberta</strong> – <strong>British</strong> <strong>Columbia</strong> - <strong>Path</strong> 1<br />
Table 1: <strong>Path</strong> 1 Characteristics<br />
<strong>Path</strong> Characteristics<br />
Rating E to W<br />
Rating W to E<br />
Max Voltage<br />
1000 MW<br />
1200 MW<br />
500 kV<br />
Figure 1: <strong>Path</strong> 1 Definition<br />
Historical Congestion<br />
<strong>Path</strong> 1 is historically congested as demonstrated by the block hour net schedule and block hour<br />
maximum schedule analysis conducted in part <strong>of</strong> the 2009 TEPPC Transmission <strong>Path</strong> Utilization<br />
Study. <strong>Alberta</strong> – <strong>British</strong> <strong>Columbia</strong> was identified as the 10 th most heavily used path in the<br />
Western Interconnection in the 2009 study. Actual flow and schedule data can be found in the<br />
duration plot in Figure 2. Although informative, the plot does not necessarily reflect the metrics<br />
that support the path as historically congested. <strong>Path</strong> 1 was not analyzed in the 2008 and 2007<br />
TEPPC Transmission <strong>Path</strong> Utilization Studies.<br />
Page 2 <strong>of</strong> 2
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