The ISO "Bucket" system is derived from the generation project estimated sync date and specifies interconnection deliverable approval deadline dates. ISO review and approval requires 10 to 15 days from the time a generator owner submits a deliverable. If a deadline date is not met, document processing stops and a new synchronization must be established.
Getting startedPlease consult the New Resource Implementation Guide and the New Resource Implementation Checklist to ensure a smooth transition from build to bid in the ISO markets.
Once completed, send project deliverables and inquiries on the new resource interconnection process to NRI@caiso.com. Please include the ISO project identification number in the email subject line.
Planning - 203 days before sync
Bucket 1 – Full network model preparationProject owners must complete action items and documents required to create a resource ID, essential for participation in ISO markets, plus documents to forecast and model the resource in ISO real-time and market systems. Items must be submitted well in advance of required ISO approval dates. Deliverables include communication block diagrams, single- and three-line drawings to assure proper installation and communication among meter and RIG elements plus the Remote Intelligent Gateway Details spreadsheet.
Implementation - 105 days before sync
Validation - 30 days before sync
Trial operations approval - 10 days before sync
Bucket 4 – Trial operations approvalTrial operations testing includes preliminary validation of meter data. Buckets 1 through 5 deliverables must be finished and approved. Metering and telemetry end-to-end testing must also be successfully completed. Final validation of metering and telemetry data will be conducted after synchronization using actual generation data.
Trial operations - 1 day before sync
Bucket 5 – Trial operationsThe interconnection customer Scheduling Coordinator must contact ISO Outage Management at (916)351-2241 for approvals 24 hours in advance of initial synchronization and again immediately before synchronization. The Scheduling Coordinator must also contact the ISO Real Time Generation desk at (916)351-2488 for initial and all subsequent synchronization and testing. The Real Time desk can fully or partially curtail trial operations at any time.
Bucket 6 – Commercial Operation Date (COD)The ISO will issue a signed Certificate of Compliance following metering and telemetry validation with live test generation data and approval of all required documentation. This certificate must be issued before declaring a commercial operation date.
Interconnection customers must email a COD request to New Resource Interconnection at least 5 business days before the desired date. The ISO will issue an email response containing the date the interconnection customer can declare commercial operation.
An alternative date may be granted based on the ISO internal approval process.
Commercial operation letter templates