DC Hub: Data Center, Power Grid & Energy Intelligence

Get Power Availability Timeline

get_power_availability_timeline

Read-onlyIdempotent

Shows year-by-year when new power generation comes online in a US state, split by confidence class, with scheduled retirements and interconnection-queue congestion context.

Instructions

Use this when the user asks when power will be available, or about time-to-power, in a US state: year by year. Composes: new generation coming online from EIA-860M monthly, split by confidence class (under-construction vs planned vs testing — never blended); scheduled retirements as dated subtractions; LBNL interconnection-queue depth as congestion context (NO delivery dates — the feed has none and most queued MW never completes). The one derived number, cumulative_firm_signal_mw, counts ONLY under-construction+testing minus retirements — speculative permitting-stage MW is shown but never folded in. Answers "when is new capacity landing in Ohio", "what comes online in Georgia by 2027" with dated, sourced, per-lane-vintaged numbers. HONESTY LINE: supply-side signals, not a load-interconnection promise — generation ≠ deliverable load, and utility study timelines / large-load tariff processes / substation-grain delivery are declared out of coverage in constraint_coverage rather than estimated. Try: get_power_availability_timeline state=OH. Do NOT use for the raw project list (get_power_pipeline), live headroom today (get_grid_intelligence), queue survivors (get_refined_queue), or where-to-build ranking (rank_markets / ai_capacity_index) — this answers WHEN, for one state.

Input Schema

Name	Required	Description
`mw`	No	Optional target MW for CONTEXT ONLY — echoed back with an explicit note; never converted into an energize-by date, which this data cannot honestly state
`state`	Yes	2-letter US state code (required), e.g. OH, GA, TX — the timeline grain; a state can span ISOs and the response reports ISO membership as context
`years`	No	Window in years from now, 1-6 (default 5)

Output Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed9 schema fields changedv2.12.45Oct 22, 2026

changedOutput schema / additionalProperties
```
Previous value: -{}New value: +true
```

removedOutput schema / description

Removed value: -"DC Hub envelope: tool data fields ride at the top level beside these keys."

removedOutput schema / properties / _entity

Removed value: -{
-  "description": "Payload class (facility|market|iso_grid|queue_results|deal|report|response); branch on it.",
-  "type": "string"
-}

removedOutput schema / properties / _front_door

Removed value: -{
-  "additionalProperties": {},
-  "description": "First-tool hint: plan_query(intent) returns the ordered plan.",
-  "properties": {},
-  "type": "object"
-}

removedOutput schema / properties / _return_loop

Removed value: -{
-  "additionalProperties": {},
-  "description": "Next-session delta call (get_changes).",
-  "properties": {},
-  "type": "object"
-}

removedOutput schema / properties / citation

Removed value: -{
-  "anyOf": [
-    {
-      "additionalProperties": {},
-      "properties": {},
-      "type": "object"
-    },
-    {
-      "type": "string"
-    }
-  ],
-  "description": "How to attribute DC Hub: {source, url, license, cite_as, retrieved_at}, or the attribution line as a string."
-}

removedOutput schema / properties / provenance

Removed value: -{
-  "additionalProperties": {},
-  "description": "Source, method, as_of, verification_counts, license, cite_as; quote it when citing.",
-  "properties": {},
-  "type": "object"
-}

removedOutput schema / properties / quota

Removed value: -{
-  "additionalProperties": {},
-  "description": "Caller quota state (remaining calls, tier).",
-  "properties": {},
-  "type": "object"
-}

removedOutput schema / properties / site_evaluation_handoff

Removed value: -{
-  "anyOf": [
-    {
-      "items": {
-        "additionalProperties": {},
-        "properties": {},
-        "type": "object"
-      },
-      "type": "array"
-    },
-    {
-      "additionalProperties": {},
-      "properties": {},
-      "type": "object"
-    }
-  ],
-  "description": "Follow-up calls [{tool, parameters, why}] when the payload carries coordinates."
-}

Changed8 schema fields changedv2.12.43Oct 15, 2026

changedOutput schema / description

Previous value: -"DC Hub envelope: structuredContent mirrors the JSON payload in content[0].text — tool-specific data fields ride at the top level alongside these envelope keys."New value: +"DC Hub envelope: tool data fields ride at the top level beside these keys."

changedOutput schema / properties / _entity / description

Previous value: -"Payload class discriminator (e.g. facility|market|iso_grid|queue_results|deal|report|response) — branch on this before parsing the rest."New value: +"Payload class (facility|market|iso_grid|queue_results|deal|report|response); branch on it."

changedOutput schema / properties / _front_door / description

Previous value: -"In-band front-door hint (first workflow-entry tool of a session): call plan_query(intent) first for the ordered multi-step plan."New value: +"First-tool hint: plan_query(intent) returns the ordered plan."

changedOutput schema / properties / _return_loop / description

Previous value: -"Suggested next-session delta call (get_changes since=24h) so you pull only what changed."New value: +"Next-session delta call (get_changes)."

changedOutput schema / properties / citation / description

Previous 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."New value: +"How to attribute DC Hub: {source, url, license, cite_as, retrieved_at}, or the attribution line as a string."

changedOutput schema / properties / provenance / description

Previous value: -"Collection-level provenance block: {source, method, as_of, verification_counts, cite_url_template, license, cite_as}. Quote the verification level when citing."New value: +"Source, method, as_of, verification_counts, license, cite_as; quote it when citing."

changedOutput schema / properties / quota / description

Previous value: -"Caller quota state (remaining calls, tier) when available."New value: +"Caller quota state (remaining calls, tier)."

changedOutput schema / properties / site_evaluation_handoff / description

Previous value: -"Pre-built follow-up calls (analyze_site / get_water_risk args) when the payload carries coordinates — an array of {tool, parameters, why} entries."New value: +"Follow-up calls [{tool, parameters, why}] when the payload carries coordinates."

Changed3 schema fields changedAug 30, 2026

removedInput schema / $schema

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

addedInput schema / required
```
Added value: +[
+  "state"
+]
```

removedOutput schema / $schema

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

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"
```

Addedv2.3.15Aug 7, 2026

TDQS

A4.2/5.0

Behavior3/5

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

Annotations already declare readOnly/idempotent/non-destructive, so safety is covered structurally. The description adds substantial beyond-schema context: confidence-class lanes are never blended, queued MW has no delivery dates, cumulative_firm_signal_mw excludes speculative MW, and out-of-scope concerns are declared in constraint_coverage. That is meaningful disclosure, but it is framed as product philosophy and data caveats rather than the operational behaviors (latency, sizing, pagination) an agent might need — and the honesty framing is repeated twice.

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 trigger condition and grain, then composition, then exclusions — a sensible ordering. It is however long and dense, with the honesty/coverage disclaimer appearing twice, so a sentence or two could be cut without loss.

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?

An output schema exists, so return values need not be explained; the description instead covers the interpretive frame (per-lane vintaging, confidence classes, what the cumulative number does and does not include) and explicitly declares out-of-coverage areas. For a nuanced, multi-source analytical tool this is sufficient to call it correctly.

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

Parameters3/5

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

Schema coverage is 100%, so the baseline is 3. The description reinforces the state grain and re-states that mw is context-only and never converted to an energize date, but that constraint is already spelled out in the schema's own parameter description, so little value is added beyond the structured fields.

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 verb (timeline of when power becomes available), the resource (EIA-860M new generation, retirements, LBNL queue depth), the grain (year-by-year, per state), and the derived metric. It is clearly separable from siblings like get_power_pipeline and get_refined_queue, which the description names.

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

Usage Guidelines5/5

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

Gives explicit triggering user phrasings ("when is new capacity landing in Ohio", "what comes online in Georgia by 2027") and an explicit do-not-use list mapping four alternatives to their distinct jobs, ending with the crisp discriminator "this answers WHEN, for one state."

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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