ERCOT Implements RIOO Enhancements to Support NOGRR245 Compliance

ERCOT continues to advance implementation of NOGRR245 ride-through requirements by enhancing the Resource Integration and Ongoing Operations (RIOO) system. Recent updates and clarifications from ERCOT reinforce a key theme for resource owners and developers: ride-through compliance is required at multiple points across the resource lifecycle and must be actively maintained over time.

While ride-through requirements are not new, the submission structure, timing, and lifecycle tracking expectations are now more formalized and enforceable.

If ride-through performance changes between milestones, the Resource has the opportunity and the obligation to update the data. ERCOT made it clear that Checklist Parts 2 and 3 will not be approved unless updated ride-through information has been reviewed and accepted by the Generation Reliability Integration (GRI) team. 

New “Ride_through” Change Request in RIOORS 

For resources registered in RIOORS, ERCOT is introducing a new Change Request type: “Ride_through.”  This is the only mechanism for updating required ridethrough data after registration.  

ERCOT strongly encourages submission of all three attachment types: OEM Documentation, Consultant studies and Capability Curves. OEM documentation helps define inverter capability, while NOGRR245 compliance is evaluated at the Point of Interconnection (POI). 

Reliability Assessments and Exemption Reviews in 2026 

ERCOT will initiate NOGRR245 Reliability Assessments in Q2 2026 to evaluate exemption requests for resources unable to meet requirements under PUCT Substantive Rule §25.517.  

ERCOT will work closely with REs to gather required information, including dynamic models, and aims to collect as much data as possible by April 30, 2026. Missing information after that date may be escalated to Enforcement and Risk Management (ERM). 

ERCOT emphasized that if multiple resources within a portfolio receive data requests, REs should coordinate with ERCOT to resolve all projects in a single meeting where possible. 

 
What This Means for Resource Owners 

• Review ride-through data requirements at each interconnection milestone: Ensure VRT, FRT, and IEEE 28002022 information is submitted and updated as projects advance
• Prepare to use the “Ride_through” Change Request: This is the only mechanism for updating ride-through data in RIOORS post-registration
• Gather supporting documentation early: Coordinate with OEMs and consultants to compile OEM documentation, studies, and capability curves
• Monitor operational changes: Any control or equipment modifications affecting POI performance must trigger a Ride_through Change Request
• Get ahead of 2026 reliability assessments: Respond promptly to ERCOT data requests and plan portfolio-wide coordination if multiple projects are involved

Bottom Line 

With ERCOT’s enhanced RIOO controls and upcoming 2026 assessments, incomplete or outdated ride‑through data now represents a material compliance risk. The EPE team is ready to assist. To find out how we can help you facilitate critical early coordination with OEMs, consultants, and internal teams and avoid enforcement exposure and last‑minute remediation, contact our team using the form below.