Great Britain National Demand Forecast, Day Ahead, Half-Hourly (Elexon BMRS NDF and TSDF)

elexon/demand-forecast

The latest day-ahead electricity demand forecast for Great Britain from the Elexon Balancing Mechanism Reporting Service: national demand (NDF) and transmission system demand (TSDF) in megawatts for each half-hour settlement period from now through the end of the next day, about 41 to 48 points as last published. National boundary only. Takes no input. Contains BMRS data © Elexon Limited copyright and database right 2026. Served by Eden Engine; not an official Elexon product.

activeper callv1

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $0.50.

Data source

Elexon Limited

Contains BMRS data © Elexon Limited copyright and database right 2026. Licence: https://www.elexon.co.uk/bsc/data/balancing-mechanism-reporting-agent/copyright-licence-bmrs-data/ Served by Eden Engine; not an official Elexon product.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

Connect once and your AI can find and run this tool, and any other it needs.

Install it Create an account

agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "elexon/demand-forecast" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "elexon/demand-forecast" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "elexon/demand-forecast", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "elexon/demand-forecast", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0026

Updated: Oct 25, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "data"
  ],
  "properties": {
    "data": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "startTime",
          "transmissionSystemDemand"
        ],
        "properties": {
          "boundary": {
            "type": [
              "string",
              "null"
            ],
            "description": "The demand boundary; N for the national figure. Null when the service omits it."
          },
          "startTime": {
            "type": "string",
            "description": "Start of the half hour, UTC ISO 8601."
          },
          "publishTime": {
            "type": "string",
            "description": "When the forecast was published, UTC ISO 8601."
          },
          "nationalDemand": {
            "type": [
              "integer",
              "null"
            ],
            "description": "Forecast national demand (NDF), megawatts. Null when the service has no national figure."
          },
          "settlementDate": {
            "type": "string",
            "description": "Settlement date, YYYY-MM-DD."
          },
          "settlementPeriod": {
            "type": "integer",
            "description": "Settlement period, 1 to 50."
          },
          "transmissionSystemDemand": {
            "type": "integer",
            "description": "Forecast transmission system demand (TSDF), megawatts."
          }
        },
        "additionalProperties": true
      },
      "description": "One row per half hour, oldest first."
    },
    "metadata": {
      "type": "object",
      "properties": {
        "datasets": {
          "type": "array",
          "items": {
            "type": "string",
            "description": "A dataset code."
          },
          "description": "The dataset codes, NDF and TSDF."
        }
      },
      "description": "Which datasets the rows carry.",
      "additionalProperties": true
    }
  },
  "additionalProperties": true
}