Alberta’s data center sector faces grid limitations as AESO introduces new interconnection approach.
Alberta’s rapidly growing data center sector is encountering limitations within the province's electrical grid, prompting the Alberta Electric System Operator (AESO) to introduce a revised approach to interconnection. The surge in data center development is outpacing the grid’s current capacity, particularly concerning Distribution Transmission Service (DTS) availability. To manage this evolving demand, the AESO is implementing a new “large load integration approach,” structured in two distinct phases.
The initial phase, Phase 1, focuses on immediate capacity allocation. A limited 1,200 MW of DTS capacity is available for allocation, presenting a significant constraint for developers. Capacity will be distributed *pro rata* amongst qualified projects, likely resulting in reduced capacity allocations for many. This process is highly competitive and time-sensitive, with strict deadlines; failure to meet these deadlines can significantly delay project progression. A key decision point is the AUCD Decision 29294-D01-2025, expected in June 2025. A flexibility exists allowing developers with multiple projects to redistribute allocated DTS capacity. Projects not selected during this Phase 1 allocation will face substantial delays.
Looking ahead, Phase 2 involves the development of a long-term integration framework. Projects not selected in Phase 1, along with any new requests exceeding the 1,200 MW allocation, will be moved to Stage 2 of the AESO Connection Process, involving scoping and preliminary studies. These projects will be effectively placed “on hold” until the AESO establishes and implements a comprehensive long-term framework. This framework is expected to incorporate North American Electric Reliability Corporation (NERC) large load standards, potential modifications to the Independent System Operator (ISO) Tariff, enhanced AESO forecasting and planning capabilities, and potential adjustments to the AESO Connection Process. Stakeholder engagement regarding this long-term framework is anticipated to begin in the latter half of 2025.
The implications of these changes are substantial. Developers should anticipate capacity reductions across their projects, requiring strategic planning regarding project pursuit and capacity allocation. The regulatory environment surrounding data center interconnection is rapidly changing, creating uncertainty about the future of Alberta’s transmission system and the data center industry. Ultimately, the long-term success of Alberta’s data center sector hinges on crucial upgrades to the province’s transmission infrastructure.
For further information:
AESO Engage: [http://aesoengage.aeso.ca/large-load-projects/]
YouTube Video: [https://www.youtube.com/watch?v=I2HfwnHS2ic]
AUCD Decision: AUCD Decision 29294-D01-2025 (available from the AESO)
