The AESO 2025 Reliability Requirements Roadmap (2025 Roadmap) is scheduled for publication on August 1, 2025. Stay tuned for confirmation in the AESO's weekly Stakeholder Newsletter once the 2025 Roadmap is available. To provide an overview of the roadmap, a Stakeholder Information Session is planned for September 2025.
Introduction and Purpose
The AESO 2023 Reliability Requirements Roadmap(R3) defines three key areas of reliability — Frequency Stability, System Strength and Flexibility Capability — and includes descriptions of each issue, the degree of mitigation urgency, key findings from reliability assessments, and action plans. The 2025 AESO Reliability Requirements Roadmap, which is aligned with the Restructured Energy Market, will provide an update on actions taken, as well as new priorities and action plans.
Key Dates
The AESO 2025 Reliability Requirements Roadmap (2025 Roadmap) is scheduled for publication on August 1, 2025. Stay tuned for confirmation in the AESO's weekly Stakeholder Newsletter once the 2025 Roadmap is available. To provide an overview of the roadmap, a Stakeholder Information Session is planned for September 2025.
Introduction and Purpose
The AESO 2023 Reliability Requirements Roadmap(R3) defines three key areas of reliability — Frequency Stability, System Strength and Flexibility Capability — and includes descriptions of each issue, the degree of mitigation urgency, key findings from reliability assessments, and action plans. The 2025 AESO Reliability Requirements Roadmap, which is aligned with the Restructured Energy Market, will provide an update on actions taken, as well as new priorities and action plans.
The AESO is seeking the participation of Legal Owners and Operators of Generating Facilitiesto help assess equipment limitations, protection settings, and risks associated with RoCoF events during system-wide frequency changes. Accurate data from all generating facilities is critical to defining these risks and ensuring the reliability of the Alberta Interconnected Electric System (AIES). The AESO previously requested participation in the survey in December 2024; however, due to limited response, we are again requested your prompt participation to enable the AESO to fulfill our mandate for system reliability.
Action Required
Complete all sections of the RoCoF survey form (available for download below, or under AESO Materials).
Submit one comprehensive form per organization, including all generators owned.
Provide the required data and records in accordance with ISO Rules, Section 503.21, Subsection 6(1) to 6(3).
Deadline
Submit the completed form/responses by June 21, 2025.
The AESO appreciates your continued cooperation and support in this important initiative. Your efforts contribute to the ongoing reliability of the provincial electricity system.
