N-1-(i)Appendix 1 - ISO Enduring Fee Cost Recovery Jurisdictional Scan
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IESO Nova Scotia IESO Nova Scotia ("IESO NS") was recently established as the independent system operator ("ISO") of Nova Scotia, taking over the system planning and procurement functions of the incumbent vertically integrated utility ("VI...
AI summary IESO Nova Scotia was established as the independent system operator, taking over planning and procurement functions from Nova Scotia Power. The transition is divided into two phases, with Phase 1 already completed and Phase 2 planned for 2027, focusing on grid operations. The rationale is to ensure an independent focus on system requirements.
Types of ISO charges to recover Core Costs Each ISO in our benchmarking group adopts a different approach to recovering its internal costs, as set out in [Table 4](#page-18-0) below. These typically account for which MPs benefit from syste...
AI summary The document discusses how different ISOs recover internal costs, highlighting the distinction between 'integrated' and 'ISO-only' charges. It notes that Ontario IESO and NESO use a single charge for shared ISO costs, while other ISOs use multiple charges. The text also explains the roles of retailers and outlines that some ISOs have additional internal costs beyond Core Costs.
Types of Charges - Charges that also recover non-Core Costs are marked ( ) Load Generation Intertie traders Transmission owner 40 ISO-NE ISO Administrative Expenses : Not a separate charge, but category that recovers the ISO's internal cos...
AI summary The document outlines various types of charges related to grid management and administrative expenses, including ISO-NE and CAISO-specific charges. These include scheduling, energy administration, reliability administration, and grid management charges, which recover internal costs and are categorized under different load and generation types.
42 Grid management charges are based on scheduled + RT instructed volumes for market services charges, but delivered volumes for system operations charges. Types of Charges - Charges that also recover non-Core Costs are marked ( ) Load Gen...
AI summary Grid management charges (GMC) are calculated by the CAISO based on volumes and activity, with different components recovering various costs such as system operations, balancing services, and wholesale market fees. These charges apply to load, generation, and intertie traders, while transmission owners are not directly charged.
Relevance to Nova Scotia The market participants in [Figure 5](#page-22-0) represent those applicable across the various benchmarking group ISOs described above. Because many of those grids run wholesale energy and other markets not presen...
AI summary The document discusses the relevance of market participants from various ISOs to Nova Scotia, noting that not all are applicable due to differences in market structures. It highlights the need for the IESO in Nova Scotia to design its own charging mechanism based on these considerations.
1) Utility structure: As comparisons to Nova Scotia's power system being composed primarily (currently, almost entirely) of a VIU, we have included several grids with large incumbent structures. The CAISO and ISO-NE have large, privately-o...
AI summary The text compares Nova Scotia's vertically integrated utility (VIU) structure to other regions, noting that CAISO, ISO-NE, and Ontario's OPG have similar structures. It explains that in some jurisdictions, legal or functional separation of asset classes has occurred, though transmission planning remains with the utility.
- 2) Jurisdictional footprint: Spanning one province, IESO NS is similar to the AESO and IESO Ontario, each of which can focus on the policy objectives of one provincial government with minimal federal involvement. In contrast, federal pol...
AI summary The text discusses the jurisdictional footprint, age, and resource mix of the Nova Scotia Independent Energy System Operator (IESO NS), comparing it with other ISOs like AESO, IESO Ontario, CAISO, and AEMO. It highlights the differences in governance, the transition from coal to renewables, and the challenges of managing inverter-based resources.
Table 6: Comparison of power system size characteristics and operating costs by ISO Unit IESO NS ISO-NE CAISO IESO AESO NESO AEMO Approximate people served millions 1 15 32 15 5 67 23 Transmission km 5,200 14,500 41,800 30,000 26,000 35,90...
AI summary Table 6 compares power system size characteristics and operating costs across various ISOs, including the number of people served, transmission infrastructure, installed capacity, peak load, total energy consumption, ownership structure, and operating costs. This provides a comparative overview of different electricity systems.