DC Hub Intelligence

Interconnection Queue

get_interconnection_queue

Read-onlyIdempotent

Check grid interconnection queues by ISO to see queued generation capacity and congestion. ERCOT also returns its large-load data-center queue.

Instructions

Use this whenever the user asks about grid interconnection queues or how much load is waiting to connect. Call when the user asks how congested an ISO's interconnection queue is or how much data-center load is queued. Returns queued generation GW per ISO. The projects field changes shape: with iso= it is an array of per-project rows; without iso it is an all-ISO summary object (total, by_iso_count, top). ERCOT also returns its large-load (data-center) queue; other ISOs don't publish one. Keyless: a trimmed preview; free with an email-bound key. Ex: "How deep is ERCOT's queue?"

Input Schema

TableJSON Schema

Name	Required	Description	Default
`iso`	No	ISO/RTO grid region to drill into: ERCOT, PJM, MISO, CAISO, SPP, NYISO, ISONE; omit for the all-ISO snapshot

Output Schema

TableJSON Schema

Name	Required	Description
`v`	No	Verification flag for the snapshot
`iso`	No	ISO/RTO this snapshot covers (per-ISO drill-down form)
`as_of`	No	Queue snapshot date
`quota`	No	Caller quota state (remaining calls, tier) when available.
`_entity`	No	Payload class discriminator (e.g. facility\|market\|iso_grid\|queue_results\|deal\|report\|response) — branch on this before parsing the rest.
`citation`	No	Machine-readable citation: how to attribute DC Hub (dchub.cloud) for this payload. Normally an OBJECT {source, url, license, cite_as, retrieved_at}; a bare string is accepted and carries the attribution line itself.
`projects`	No	SHAPE DEPENDS ON THE CALL: with iso= this is an ARRAY of queued generation projects (largest / most recent first); with iso omitted it is the all-ISO SUMMARY OBJECT {total, tracked, by_iso_count, top, note} — per-project rows are not returned for the all-ISO snapshot. Check the type before indexing.
`provenance`	No	Collection-level provenance block: {source, method, as_of, verification_counts, cite_url_template, license, cite_as}. Quote the verification level when citing.
`source_url`	No	Queue source URL
`_front_door`	No	In-band front-door hint (first workflow-entry tool of a session): call plan_query(intent) first for the ordered multi-step plan.
`source_name`	No	Queue source name
`_return_loop`	No	Suggested next-session delta call (get_changes since=24h) so you pull only what changed.
`project_count`	No	Projects in the queue snapshot
`top_subregions`	No	Provenance / sub-region breakdown for the large-load figure (ERCOT)
`queued_generation_gw`	No	Generation interconnection queue in this ISO, GW (US ISOs; ERCOT's generation queue, not its large-load queue). null on NESO/IESO/AESO
`queued_load_total_gw`	No	Meaning depends on queued_load_total_gw_basis: generation_queue = the generation queue (deprecated alias of queued_generation_gw, removed after 2026-11-15); large_load = ERCOT's large-load (demand) queue; mixed_connection_queue = NESO/IESO/AESO connections queue (generation AND demand). GW
`new_applications_q_gw`	No	New queue applications in the latest period, GW (when published)
`new_applications_period`	No	Period the new-applications figure covers
`site_evaluation_handoff`	No	Pre-built follow-up calls (analyze_site / get_water_risk args) when the payload carries coordinates — an array of {tool, parameters, why} entries.
`queued_load_dc_share_pct`	No	ERCOT: data-center share of the large-load queue, %. NESO/IESO/AESO: demand share of the connections queue, %. null elsewhere
`historical_completion_pct`	No	Share of queued projects that historically complete, % (when published)
`queued_load_data_center_gw`	No	ERCOT: data-center load DERIVED as ~90% of the large-load queue, GW. NESO/IESO/AESO: demand projects in the connections queue (all demand, not data centres only). null elsewhere
`queued_load_total_gw_basis`	No	What queued_load_total_gw measures on this row: generation_queue \| large_load \| mixed_connection_queue
`queued_generation_gw_basis_note`	No	What queued_generation_gw counts on this row: status filter and MW column, e.g. "Active only, summer MW". Present on the US generation-queue ISOs other than ERCOT; compare totals from other trackers only on the same basis

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedv2.12.25Oct 6, 2026

addedOutput schema / properties / queued_generation_gw_basis_note

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "What queued_generation_gw counts on this row: status filter and MW column, e.g. \"Active only, summer MW\". Present on the US generation-queue ISOs other than ERCOT; compare totals from other trackers only on the same basis"
+}

Changed5 schema fields changedv2.12.21Oct 3, 2026

addedOutput schema / properties / queued_generation_gw

Added value: +{
+  "anyOf": [
+    {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "string"
+        }
+      ]
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Generation interconnection queue in this ISO, GW (US ISOs; ERCOT's generation queue, not its large-load queue). null on NESO/IESO/AESO"
+}

changedOutput schema / properties / queued_load_data_center_gw / description

Previous value: -"ERCOT only: large-load (data-center-driven) queue, GW — null for ISOs that publish no comparable feed"New value: +"ERCOT: data-center load DERIVED as ~90% of the large-load queue, GW. NESO/IESO/AESO: demand projects in the connections queue (all demand, not data centres only). null elsewhere"

changedOutput schema / properties / queued_load_dc_share_pct / description

Previous value: -"ERCOT only: data-center share of queued load, %"New value: +"ERCOT: data-center share of the large-load queue, %. NESO/IESO/AESO: demand share of the connections queue, %. null elsewhere"

changedOutput schema / properties / queued_load_total_gw / description

Previous value: -"Total queued GENERATION capacity in this ISO, GW"New value: +"Meaning depends on queued_load_total_gw_basis: generation_queue = the generation queue (deprecated alias of queued_generation_gw, removed after 2026-11-15); large_load = ERCOT's large-load (demand) queue; mixed_connection_queue = NESO/IESO/AESO connections queue (generation AND demand). GW"

addedOutput schema / properties / queued_load_total_gw_basis

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "What queued_load_total_gw measures on this row: generation_queue | large_load | mixed_connection_queue"
+}

Changed4 schema fields changedAug 30, 2026

removedInput schema / $schema

Removed value: -"http://json-schema.org/draft-07/schema#"

removedOutput schema / $schema

Removed value: -"http://json-schema.org/draft-07/schema#"

changedOutput schema / properties / projects / anyOf

Previous value: -[
-  {
-    "items": {
-      "additionalProperties": {},
-      "properties": {
-        "capacity_mw": {
-          "anyOf": [
-            {
-              "anyOf": [
-                {
-                  "type": "number"
-                },
-                {
-                  "type": "string"
-                }
-              ]
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "Nameplate capacity, MW"
-        },
-        "county": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "County"
-        },
-        "fuel_type": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "Fuel / technology"
-        },
-        "iso": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "ISO/RTO"
-        },
-        "project_name": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "Project name"
-        },
-        "queue_date": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "Queue entry date"
-        },
-        "queue_id": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "ISO queue position id"
-        },
-        "queue_status": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "Queue status"
-        },
-        "state": {
-          "anyOf": [
-            {
-              "type": "string"
-            },
-            {
-              "type": "null"
-            }
-          ],
-          "description": "US state"
-        }
-      },
-      "type": "object"
-    },
-    "type": "array"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "anyOf": [
+      {
+        "items": {
+          "additionalProperties": {},
+          "properties": {
+            "capacity_mw": {
+              "anyOf": [
+                {
+                  "anyOf": [
+                    {
+                      "type": "number"
+                    },
+                    {
+                      "type": "string"
+                    }
+                  ]
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Nameplate capacity, MW"
+            },
+            "county": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "County"
+            },
+            "fuel_type": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Fuel / technology"
+            },
+            "iso": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "ISO/RTO"
+            },
+            "project_name": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Project name"
+            },
+            "queue_date": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Queue entry date"
+            },
+            "queue_id": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "ISO queue position id"
+            },
+            "queue_status": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "Queue status"
+            },
+            "state": {
+              "anyOf": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "null"
+                }
+              ],
+              "description": "US state"
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      {
+        "additionalProperties": {},
+        "properties": {
+          "by_iso_count": {
+            "description": "Per-ISO project counts, e.g. {\"PJM\":972,\"ERCOT\":1893,\"CAISO\":279}"
+          },
+          "note": {
+            "anyOf": [
+              {
+                "type": "string"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "How the all-ISO rollup was assembled and where to get the full per-ISO list"
+          },
+          "top": {
+            "description": "The largest projects across all ISOs (same row shape as the per-ISO array form)"
+          },
+          "total": {
+            "anyOf": [
+              {
+                "anyOf": [
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "string"
+                  }
+                ]
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "Projects in the full multi-ISO queue, e.g. 5512"
+          },
+          "tracked": {
+            "anyOf": [
+              {
+                "type": "boolean"
+              },
+              {
+                "type": "null"
+              }
+            ],
+            "description": "Whether DC Hub has classified named per-project rows for this snapshot"
+          }
+        },
+        "type": "object"
+      }
+    ]
+  },
+  {
+    "type": "null"
+  }
+]

changedOutput schema / properties / projects / description

Previous value: -"Queued generation projects (largest / most recent first)"New value: +"SHAPE DEPENDS ON THE CALL: with iso= this is an ARRAY of queued generation projects (largest / most recent first); with iso omitted it is the all-ISO SUMMARY OBJECT {total, tracked, by_iso_count, top, note} — per-project rows are not returned for the all-ISO snapshot. Check the type before indexing."

Changed5 schema fields changedv2.3.20Aug 14, 2026

removedOutput schema / properties / citation / additionalProperties
```
Removed value: -{}
```

addedOutput schema / properties / citation / anyOf

Added value: +[
+  {
+    "additionalProperties": {},
+    "properties": {},
+    "type": "object"
+  },
+  {
+    "type": "string"
+  }
+]

changedOutput schema / properties / citation / description

Previous value: -"Machine-readable citation: how to attribute DC Hub (dchub.cloud) for this payload."New value: +"Machine-readable citation: how to attribute DC Hub (dchub.cloud) for this payload. Normally an OBJECT {source, url, license, cite_as, retrieved_at}; a bare string is accepted and carries the attribution line itself."

removedOutput schema / properties / citation / properties
```
Removed value: -{}
```
removedOutput schema / properties / citation / type
```
Removed value: -"object"
```

Changed1 schema field changedv2.3.12Jul 28, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": {},
+  "description": "ISO interconnection-queue snapshot: queued GW, per-project rows, and (ERCOT) the large-load data-center queue — alongside the DC Hub envelope keys.",
+  "properties": {
+    "_entity": {
+      "description": "Payload class discriminator (e.g. facility|market|iso_grid|queue_results|deal|report|response) — branch on this before parsing the rest.",
+      "type": "string"
+    },
+    "_front_door": {
+      "additionalProperties": {},
+      "description": "In-band front-door hint (first workflow-entry tool of a session): call plan_query(intent) first for the ordered multi-step plan.",
+      "properties": {},
+      "type": "object"
+    },
+    "_return_loop": {
+      "additionalProperties": {},
+      "description": "Suggested next-session delta call (get_changes since=24h) so you pull only what changed.",
+      "properties": {},
+      "type": "object"
+    },
+    "as_of": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "Queue snapshot date"
+    },
+    "citation": {
+      "additionalProperties": {},
+      "description": "Machine-readable citation: how to attribute DC Hub (dchub.cloud) for this payload.",
+      "properties": {},
+      "type": "object"
+    },
+    "historical_completion_pct": {
+      "anyOf": [
+        {
+          "anyOf": [
+            {
+              "type": "number"
+            },
+            {
+              "type": "string"
+            }
+          ]
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "Share of queued projects that historically complete, % (when published)"
+    },
+    "iso": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "ISO/RTO this snapshot covers (per-ISO drill-down form)"
+    },
+    "new_applications_period": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "Period the new-applications figure covers"
+    },
+    "new_applications_q_gw": {
+      "anyOf": [
+        {
+          "anyOf": [
+            {
+              "type": "number"
+            },
+            {
+              "type": "string"
+            }
+          ]
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "New queue applications in the latest period, GW (when published)"
+    },
+    "project_count": {
+      "anyOf": [
+        {
+          "anyOf": [
+            {
+              "type": "number"
+            },
+            {
+              "type": "string"
+            }
+          ]
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "Projects in the queue snapshot"
+    },
+    "projects": {
+      "anyOf": [
+        {
+          "items": {
+            "additionalProperties": {},
+            "properties": {
+              "capacity_mw": {
+                "anyOf": [
+                  {
+                    "anyOf": [
+                      {
+                        "type": "number"
+                      },
+                      {
+                        "type": "string"
+                      }
+                    ]
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "description": "Nameplate capacity, MW"
+              },
+              "county": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "description": "County"
+              },
+              "fuel_type": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "description": "Fuel / technology"
+              },
+              "iso": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "description": "ISO/RTO"
+              },
+              "project_name": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "description": "Project name"
+              },
+              "queue_date": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "description": "Queue entry date"
+              },
+              "queue_id": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "description": "ISO queue position id"
+              },
+              "queue_status": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "description": "Queue status"
+              },
+              "state": {
+                "anyOf": [
+                  {
+                    "type": "string"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "description": "US state"
+              }
+            },
+            "type": "object"
+          },
+          "type": "array"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "Queued generation projects (largest / most recent first)"
+    },
+    "provenance": {
+      "additionalProperties": {},
+      "description": "Collection-level provenance block: {source, method, as_of, verification_counts, cite_url_template, license, cite_as}. Quote the verification level when citing.",
+      "properties": {},
+      "type": "object"
+    },
+    "queued_load_data_center_gw": {
+      "anyOf": [
+        {
+          "anyOf": [
+            {
+              "type": "number"
+            },
+            {
+              "type": "string"
+            }
+          ]
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "ERCOT only: large-load (data-center-driven) queue, GW — null for ISOs that publish no comparable feed"
+    },
+    "queued_load_dc_share_pct": {
+      "anyOf": [
+        {
+          "anyOf": [
+            {
+              "type": "number"
+            },
+            {
+              "type": "string"
+            }
+          ]
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "ERCOT only: data-center share of queued load, %"
+    },
+    "queued_load_total_gw": {
+      "anyOf": [
+        {
+          "anyOf": [
+            {
+              "type": "number"
+            },
+            {
+              "type": "string"
+            }
+          ]
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "Total queued GENERATION capacity in this ISO, GW"
+    },
+    "quota": {
+      "additionalProperties": {},
+      "description": "Caller quota state (remaining calls, tier) when available.",
+      "properties": {},
+      "type": "object"
+    },
+    "site_evaluation_handoff": {
+      "anyOf": [
+        {
+          "items": {
+            "additionalProperties": {},
+            "properties": {},
+            "type": "object"
+          },
+          "type": "array"
+        },
+        {
+          "additionalProperties": {},
+          "properties": {},
+          "type": "object"
+        }
+      ],
+      "description": "Pre-built follow-up calls (analyze_site / get_water_risk args) when the payload carries coordinates — an array of {tool, parameters, why} entries."
+    },
+    "source_name": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "Queue source name"
+    },
+    "source_url": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "Queue source URL"
+    },
+    "top_subregions": {
+      "description": "Provenance / sub-region breakdown for the large-load figure (ERCOT)"
+    },
+    "v": {
+      "anyOf": [
+        {
+          "type": "string"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "description": "Verification flag for the snapshot"
+    }
+  },
+  "type": "object"
+}

Changed1 schema field changedv2.3.6Jul 2, 2026

addedInput schema / properties / iso / description

Added value: +"ISO/RTO grid region to drill into: ERCOT, PJM, MISO, CAISO, SPP, NYISO, ISONE; omit for the all-ISO snapshot"

First observedv2.1.19Jun 8, 2026

TDQS

A4.6/5.0

Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), and the description adds substantial behavior beyond them: the projects field changes shape depending on whether iso is supplied, ERCOT uniquely returns a large-load queue, and access tiers differ (keyless preview vs email-bound key). This is rich, non-obvious operational context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with the usage trigger, then output, then the shape-change caveat and access tiers. Dense but each sentence earns its place. Slightly list-like and information-packed rather than maximally tight.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Despite an existing output schema, the description still discloses output structure, the conditional shape change, an ISO-specific exception (ERCOT large-load), and the auth/access model. Nothing essential for correct invocation is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with a single, fully documented parameter, so the baseline is 3. The description goes further by explaining the semantic consequence of the iso parameter (array of per-project rows vs an all-ISO summary object), which the schema does not convey.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific resource and output: 'Returns queued generation GW per ISO', plus the trigger scope (grid interconnection queues, how much load is waiting to connect). An agent can distinguish this from adjacent siblings such as get_refined_queue or get_pipeline without opening a schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives concrete when-to-use triggers ('how congested an ISO's interconnection queue is', 'how much data-center load is queued'), which is strong positive guidance. It lacks any explicit when-not or named-alternative routing among the many queue/pipeline siblings, so it falls just short of a 5.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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