Transmission facility decisions

Transmission decisions

Decisions on the siting/routing of facility projects

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All new electric transmission facilities (with the exception of a small number of projects classified as critical transmission infrastructure) require two separate approvals from the AUC: (i) an approval of the need for new facilities as set out in a needs identification document (NID) filed by the Alberta Electric System Operator (AESO) under the Electric Utilities Act; and (ii) an approval of a facility application for the specific siting or routing of the new facilities, which is made by a transmission facility owner under the Hydro and Electric Energy Act. In a facility application, the Commission considers if approval of the proposed facilities is in the public interest having regard to the project's social, economic and environmental effects. A facility application may be considered by the Commission in conjunction with a related NID application, or on its own following approval of a NID. Transmission facilities include transmission lines and substations.

The issues typically considered in transmission facility decisions include:

  • Consultation – includes adequacy, scope of consultation with landowners, other interested parties.
  • Property impacts – includes property value, agricultural impacts, business impacts, future development impacts.
  • Health and safety – includes electromagnetic fields (EMF).
  • Routing and siting – includes route development, route/site choice (preferred or alternative), transportation utility corridors, structure choice, construction impacts.
  • Environment – includes wildlife, plants, native prairie, water and water crossings.
  • Electrical effects includes pipeline interference and mitigation, stray voltage, radio frequency interference.
  • Project cost – includes costs of preferred vs alternative routes.
  • Noise includes noise impact assessment, post construction monitoring.
  • First Nations – includes consultation, impacts to constitutional rights.
  • Critical transmission infrastructure – whether facilities are critical transmission infrastructure as defined in the legislation.
  • Uncontested – applications with no outstanding objections, or objections were received and the AUC determined that the parties did not meet the test for standing.

 

Decisions for reference

  
  
  
  
  
Issues
  
26171-D01-2021AltaLink Management Ltd.Provost to Edgerton Transmission Development26171Substation, transmission lineHealth and safety, Noise, Project cost, Property impacts, Routing and siting, Environment
25934-D01-2021ENMAX Power CorporationSoutheast Substation and Transmission Line Development Project 25934Substation, transmission line, transmission interconnectionUncontested
26035-D01-2021Independent System OperatorThickwood to Voyageur Transmission Project26035Needs identification document, substation, transmission line, transmission interconnectionUncontested
25181-D01-2020ATCO Electric Ltd.Rycroft 730S Substation Expansion Project25181Substation, transmission lineConsultation, Property impacts, Routing and siting
24102-D01-2020ATCO Electric Ltd.Transmission Line 7L65 Rebuild Project24102Transmission lineProperty impacts, Health and safety, Routing and siting, Environment
24831-D01-2020ENMAX Power CorporationHighway 8 Transmission Line 138-7.82L Relocation Project24831Transmission lineConsultation, Property impacts, Routing and siting, Environment
23799-D01-2019ATCO Gas and Pipelines Ltd.Pembina-Keephills Transmission Pipeline Project23799Pipeline-newConsultation, Routing and siting, Environment
22546-D01-2019Stirling Wind Project Ltd.; Alberta Electric System Operator; AltaLink Management Ltd.Stirling Wind Project; Stirling Wind Project Connection Needs Identification Document; Stirling Wind Project Connection Facility Applications22546Substation, transmission line, power plant - wind plantNeed: system access service, Choice of NID alternative, Consultation, Property impacts, Health and safety, Routing and siting, Environment, Noise
23641-D01-2019Alberta Electric System Operator; EPCOR Distribution & Transmission Inc.Strathcona Substation Connection Enhancement Needs Identification Document Application; Strathcona Capacity Increase and New Transmission Line 72DS26 Facility Applications23641Substation, transmission lineNeed: generation or load growth, Need: reliability, Need: system access service, Routing and siting
23393-D01-2019Alberta Electric System Operator; AltaLink Management Ltd.Fincastle 336S Substation Upgrade23393SubstationNeed: generation or load growth, Need: reliability, Need: system access service, Choice of NID alternative
23339-D01-2019Alberta Electric System Operator; AltaLink Management Ltd.Provost Reliability Upgrade Project23339NID, transmission line, substation,Need: reliability, Need: system access service, Choice of NID alternative, Consultation, Property impacts, Routing and siting, Environment, Electrical effects
23157-D01-2018ENMAX Power CorporationDowntown Calgary Transmission Reinforcement Project23157Substation, transmission lineConsultation, Property impacts, Health and safety, Routing and siting, Noise
21973-D01-2017Alberta Electric System Operator; AltaLink Management Ltd.Chestermere 419S and Balzac 391S Modification Need and Facility Applications21973NID, substation, transmission lineNeed: generation or load growth, Need: system access service, Consultation, Property impacts, Health and safety, Environment, Project cost, Noise
21761-D01-2017Alberta Electric System Operator; ATCO Electric Ltd. Hughes 2030S Substation21761NID, substation, transmission lineConsultation, Property impacts, Health and safety, Routing and siting, Environment
21857-D01-2017Alberta Electric System Operator; AltaLink Management Ltd.Wainwright Transmission Reinforcement21857NID, substation, transmission lineNeed: reliability, Need: system access service, Consultation, Property impacts, Routing and siting, Environment, Electrical effects, Noise
20987-D01-2016AltaLink Management Ltd.South and West of Edmonton Area Transmission Development - Harry Smith Development20987Transmission line, SubstationConsultation, Property impacts, Health and safety, Routing and siting, Environment, Electrical effects, Project cost, Noise
20924-D01-2016AltaLink Management Ltd.South and West of Edmonton Area Transmission Development Cooking Lake, Saunders Lake, Wabamun and Leduc Developments20924Transmission line, Substation, TelecommunicationsProperty impacts, Health and safety, Routing and siting, Environment, Project cost, Noise
3450-D01-2015AltaLink Management Ltd.Transmission Line 423L3450Transmission line, SubstationConsultation, Property impacts, Routing and siting, Environment, Electrical effects, Project cost, Noise
3368-D01-2015ENMAX Power Corporation138-2.82L and 138-2.83L Transmission Realignment3368Transmission lineProperty impacts, Routing and siting, Project cost
3362-D01-2015AltaLink Management Ltd.Springbank 9273R Radio Site Telecommunications Upgrade3362TelecommunicationsProperty impacts, Health and safety, Routing and siting
2014-349City of Medicine Hat Electric UtilityTransmission Line MH-20L Upgrade Project3168Transmission line, SubstationConsultation, Property impacts, Health and safety, Routing and siting
2014-219AltaLink Management Ltd.Red Deer Area Transmission Development2669Transmission line, SubstationProperty impacts, Routing and siting, Environment, Project cost, Noise

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