Below is the basic structure needed for a Conditional Seasonal Rating submission: { "proposal-header": { "source": { "provider": "see LEP User Guide for guidance", "last-updated": "see LEP User Guide for guidance", "origin-id": "see LEP User Guide for guidance" }, "default-emergency-durations": [ { "name": "LTE", "duration-minutes": 240 }, { "name": "STE", "duration-minutes": 15 }, { "name": "DAL", "duration-minutes": 5 } ], "power-system-resources": [ { "resource-id": "see LEP User Guide for guidance" } ] }, "ratings": [ { "resource-id": "see LEP User Guide for guidance", "periods": [ { "season-name": "see LEP User Guide for guidance", "period-start": "see LEP User Guide for guidance", "period-end": "see LEP User Guide for guidance", "conditional-ratings": [ { "condition-name": "see LEP User Guide for guidance", "continuous-operating-limit": { "mva": value }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": value } }, { "duration-name": "STE", "limit": { "mva": value } }, { "duration-name": "DAL", "limit": { "mva": value } } ] }, { "condition-name": "see LEP User Guide for guidance", "continuous-operating-limit": { "mva": value }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": value } }, { "duration-name": "STE", "limit": { "mva": value } }, { "duration-name": "DAL", "limit": { "mva": value } } ] } ] } ] } ] } Below is an example created on 23 June 2025. The "resource-id" header setting: (“X-LEP-Name-Type”, “NETMOMCompositeId”) { "proposal-header": { "source": { "provider": "3", "last-updated": "2025-06-23T18:15:02.742Z", "origin-id": "ISO-NE_API_Script_generation_tool/condseason_create_script" }, "default-emergency-durations": [ { "name": "LTE", "duration-minutes": 240 }, { "name": "STE", "duration-minutes": 15 }, { "name": "DAL", "duration-minutes": 5 } ], "power-system-resources": [ { "resource-id": "MYSTIC.351.A.351" } ] }, "ratings": [ { "resource-id": "MYSTIC.351.A.351", "periods": [ { "season-name": "January", "period-start": "2026-01-01T00:00:00Z", "period-end": "2026-02-01T00:00:00Z", "conditional-ratings": [ { "condition-name": "351 with 358 In", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] }, { "condition-name": "351 with 358 Out", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] } ] }, { "season-name": "February", "period-start": "2026-02-01T00:00:00Z", "period-end": "2026-03-01T00:00:00Z", "conditional-ratings": [ { "condition-name": "351 with 358 In", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] }, { "condition-name": "351 with 358 Out", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] } ] }, { "season-name": "March", "period-start": "2026-03-01T00:00:00Z", "period-end": "2026-04-01T00:00:00Z", "conditional-ratings": [ { "condition-name": "351 with 358 In", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] }, { "condition-name": "351 with 358 Out", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] } ] }, { "season-name": "April", "period-start": "2026-04-01T00:00:00Z", "period-end": "2026-05-01T00:00:00Z", "conditional-ratings": [ { "condition-name": "351 with 358 In", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] }, { "condition-name": "351 with 358 Out", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] } ] }, { "season-name": "May", "period-start": "2026-05-01T00:00:00Z", "period-end": "2026-06-01T00:00:00Z", "conditional-ratings": [ { "condition-name": "351 with 358 In", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] }, { "condition-name": "351 with 358 Out", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] } ] }, { "season-name": "June", "period-start": "2025-06-01T00:00:00Z", "period-end": "2025-07-01T00:00:00Z", "conditional-ratings": [ { "condition-name": "351 with 358 In", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] }, { "condition-name": "351 with 358 Out", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] } ] }, { "season-name": "July", "period-start": "2025-07-01T00:00:00Z", "period-end": "2025-08-01T00:00:00Z", "conditional-ratings": [ { "condition-name": "351 with 358 In", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] }, { "condition-name": "351 with 358 Out", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] } ] }, { "season-name": "August", "period-start": "2025-08-01T00:00:00Z", "period-end": "2025-09-01T00:00:00Z", "conditional-ratings": [ { "condition-name": "351 with 358 In", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] }, { "condition-name": "351 with 358 Out", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] } ] }, { "season-name": "September", "period-start": "2025-09-01T00:00:00Z", "period-end": "2025-10-01T00:00:00Z", "conditional-ratings": [ { "condition-name": "351 with 358 In", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] }, { "condition-name": "351 with 358 Out", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] } ] }, { "season-name": "October", "period-start": "2025-10-01T00:00:00Z", "period-end": "2025-11-01T00:00:00Z", "conditional-ratings": [ { "condition-name": "351 with 358 In", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] }, { "condition-name": "351 with 358 Out", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] } ] }, { "season-name": "November", "period-start": "2025-11-01T00:00:00Z", "period-end": "2025-12-01T00:00:00Z", "conditional-ratings": [ { "condition-name": "351 with 358 In", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] }, { "condition-name": "351 with 358 Out", "continuous-operating-limit": { "mva": 410 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 900 } }, { "duration-name": "STE", "limit": { "mva": 900 } }, { "duration-name": "DAL", "limit": { "mva": 1000 } } ] } ] }, { "season-name": "December", "period-start": "2025-12-01T00:00:00Z", "period-end": "2026-01-01T00:00:00Z", "conditional-ratings": [ { "condition-name": "351 with 358 In", "continuous-operating-limit": { "mva": 413 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 423 } }, { "duration-name": "STE", "limit": { "mva": 423 } }, { "duration-name": "DAL", "limit": { "mva": 433 } } ] }, { "condition-name": "351 with 358 Out", "continuous-operating-limit": { "mva": 413 }, "emergency-operating-limits": [ { "duration-name": "LTE", "limit": { "mva": 423 } }, { "duration-name": "STE", "limit": { "mva": 423 } }, { "duration-name": "DAL", "limit": { "mva": 433 } } ] } ] } ] } ] }