AESO Update to PCC

July 16, 2014

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AESO July 2014 Update

• The AESO published its updated long-term plan on Jan 31st, 2014

– Forecasting 2.4% overall load growth over the planning horizon, 3.5% in the oil sands region

– http://www.aeso.ca/downloads/AESO_2013_Long-termTransmissionPlan_Web.pdf

• The Long Term Outlook was published in Q2, 2014. The 2015 long-term plan will use this outlook

• Path 1 Operational limits increased in 2014

– Winter import limit increased to 830 MW

– Summer import limit increased to 800 MW

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AESO July 2014 Update

• Chapel Rock 500/240 kV Substation

– TFO preparing the facilities application

– Anticipated in service date is now 2018

– WECC Path Rating process for Path 1 will be initiated soon

• AESO continues to work with BC Hydro on joint studies to identify infrastructure and/or market products required to restore Path 1 to its current WECC Catalog path rating (1200 MW import, 1000 MW export)

• Application to redefine Path 1 was made to WECC

– Name change from Langdon to Bennett

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Path 1 Definition in 2013 Path Rating Catalog

Cranbrook

Langdon 102S

500/240 kV1200 MVA

Pocaterra

Coleman

Fording Coal Tap

Natal

Path 1

500 kV

138 kV

138 kV927L, 240 kV to Milo

924L, 240 kV to Milo

937L, 240 kV to Janet

936L, 240 kV to Janet

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Schematic Diagram of Path 1 After Name Change

Cranbrook

Bennett 520S

500/240 kV1200 MVA

Pocaterra

Coleman

Fording Coal Tap

Natal

Path 1

500 kV

138 kV

138 kV927L, 240 kV to Milo

924L, 240 kV to Milo

937L, 240 kV to Janet

936L, 240 kV to Janet

Langdon 102S

Thank you