Combined needs identification document and transmission facility decisions

Combined transmission needs and facility decisions

Decisions on both the need and siting/routing for facility projects

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Return to the facilities decision index page

​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 NID applications, the AESO must demonstrate the need for new transmission, and propose a transmission solution to meet that need.  In a facility application, the Commission considers whether approval of the proposed facilities is in the public interest having regard to the project's social, economic and environmental effects. NID and facility applications may be considered by the Commission in separate proceedings (if considered independently, the facility proceeding must follow NID approval), or in a combined proceeding.

The issues typically considered in combined NID/facility decisions include:

  • The rationale for new transmission, including:
    • Generation or load growth
    • Reliability
    • System access service  
  • Choice of NID alternative – includes cost of alternative, routing issues, technical feasibility of alternative.
  • 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 frequency (EMF).
  • Routing and siting – includes route development, site/route choice (preferred vs 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
  
25074-D02-2020Windrise Wind Energy Inc.Transmission Line 497L and Interconnection25074NID, transmission line, substation, transmission interconnectionProperty impacts, Health and safety, Routing and siting, Environment
25018-D01-2020BHE Canada Rattlesnake G.P. Inc.; Alberta Electric System Operator; AltaLink Management Ltd.Rattlesnake Ridge Wind Power Project25018Power plant, substation, power plant interconnection, transmission line, NID, substation, transmission interconnectionEnvironment
23943-D01-2020Alberta Electric System Operator; EPCOR Distribution & Transmission Inc.West Edmonton Transmission Upgrade Project23943NID, Transmission line, substationNeed: generation or load growth, Need: reliability, Need: system access service, Choice of NID alternative, Consultation, Property impacts, Health and safety, Routing and siting, Environment, Project cost, Noise
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
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
21030-D02-2017Alberta PowerLine General Partner Ltd.Fort McMurray West 500-Kilovolt Transmission Project21030NID, Transmission lineConsultation, Property impacts, Health and safety, Routing and siting, Environment, Electrical effects, Noise, First Nations, Constitutional question, Critical transmission infrastructure
3386-D01-2016Alberta Electric System Operator; ENMAX Power CorporationFoothills Area Transmission Development in the South of Calgary3386NID, Transmission lineNeed: generation or load growth, Choice of NID alternative, Consultation, Property impacts, Health and safety, Routing and siting, Environment
20537-D01-2015Alberta Electric System Operator; Cenovus FCCL Ltd.Boreal 193S Substation20537NID, Transmission line, SubstationNeed: generation or load growth, Choice of NID alternative, First Nations
3598-D01-2015Alberta Electric System Operator; ATCO Electric Ltd. Whitetail Interconnection Project3598NID, Transmission lineNeed: generation or load growth, Choice of NID alternative
3543-D01-2015Alberta Electric System Operator; ATCO Electric Ltd.Carmon Creek Interconnection3543NID, Transmission line, SubstationNeed: generation or load growth, Need: reliability, Choice of NID alternative

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