Describes how Hawaiian Electric uses a suite of modeling tools to identify near-term quantity and timing of grid needs and evaluate potential solutions.
Ameren Missouri’s Response to Order Opening a Working Case Regarding FERC Order 2222 (Participation of grid edge resource Aggregators in RTO Markets
Component
Technical
Author
Filed by Ameren Missouri – signed by James B. Lowery (attorney, JBL Law) and Wendy K. Tatro (Director & Assistant General Counsel, Ameren) on behalf of the company
Stakeholder
Ameren Missouri (Union Electric Company) authored the response; it was part of Missouri PSC Case EW-2021-0267 (a Commission-led workshop on FERC Order 2222) . The issues discussed affect Missouri’s investor-owned utilities (Ameren and others like Evergy),
A utility-filed document in a Missouri Public Service Commission working case, detailing how retail rules and utility practices may need to adapt for grid edge resource aggregations. Ameren Missouri’s response emphasizes validation and compliance checks at the distribution level before grid edge resources can participate in wholesale markets. It raises consumer protection issues (e.g., requiring grid edge resource aggregators to register with the state and adhere to marketing standards to prevent fraud) . It discusses the need for enhanced metering and telemetry so that when a customer’s behind-the-meter resource provides wholesale services, the utility can measure those injections separately—ensuring retail billing credits (like net metering) and wholesale payments don’t overlap or double count the same energy . The filing also notes potential distribution infrastructure upgrades and operating procedures to maintain safety/reliability with aggregated grid edge resource dispatch (for instance, communication protocols for outage coordination and mechanisms for the utility to override or constrain aggregator dispatch for local grid safety). Overall, it outlines how the PSC should develop rules on interconnection, data sharing, dual participation, and dispute resolution between aggregators and utilities.
Provide recommended practices for TPs and PCs to establish effective modeling data and verification requirements for aggregate Grid Edge Resource models. This ensures accurate representation of grid edge resources in planning assessments, facilitating reliable integration into the bulk power system.
This report discusses the technical considerations for integrating grid edge resources into the bulk power system. It addresses the importance of communication capabilities, standardized interconnection agreements, and the adoption of advanced inverter functionalities as specified in IEEE 1547-2018. The document provides guidance on verifying grid edge resource technical characteristics and capabilities during the registration process to maintain grid reliability.