Elpriser

MCP server for Danish electricity prices — current spot price, cheapest hours, and a 7-day forecast for DK1 and DK2, straight from elpriser.org.

A Model Context Protocol server that lets an LLM (Claude Desktop, etc.) answer questions like:

• "Hvad er elprisen lige nu?" / "What does electricity cost right now in Denmark?"
• "Hvornår er strøm billigst i morgen?" — find the cheapest hours to charge the EV / run the heat pump
• "Vis elpriser i dag time for time for DK2"
• "Hvordan ser elprisprognosen ud de næste 7 dage?"

Data comes from the free, public elpriser.org API, which is sourced from Energi Data Service (Energinet) / Nord Pool. Prices can be the raw spot price or the total price you actually pay per kWh (incl. system & transmission tariffs, electricity tax and 25% VAT). No API key required.

Tools

Tool	What it does
get_current_price	Current price for this hour (DK1/DK2)
get_today_prices	All 24 hourly prices for a date
get_cheapest_hours	The N cheapest hours of the day (EV/heat-pump scheduling)
get_price_forecast	7-day forecast (actual for today/tomorrow, estimate beyond)
find_net_company	Net company (netselskab) for a lat/lng — for exact total price

All tools take an area (DK1 or DK2, default DK1) and most take a mode:

• spot_ex — raw spot price, no VAT
• spot_inkl — spot price incl. 25% VAT
• inkl_alt (default) — total price incl. all tariffs + electricity tax + VAT
• inkl_alt_minus — total without electricity tax

Install

Requires Node.js ≥ 18.

Claude Desktop

Add to your claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/claude_desktop_config.json, Windows: %APPDATA%\Claude\claude_desktop_config.json):

{
  "mcpServers": {
    "elpriser": {
      "command": "npx",
      "args": ["-y", "elpriser-mcp"]
    }
  }
}

Restart Claude Desktop. You should see the elpriser tools available.

Any other MCP client

Run the server over stdio:

npx -y elpriser-mcp

Or install globally:

npm install -g elpriser-mcp
elpriser-mcp

Examples

You: Hvornår er strøm billigst i morgen i DK1?

Claude (calls get_cheapest_hours area=DK1 hours=5 date=…): De billigste timer i morgen er 02–05 og 13–14 …

Configuration

Env var	Default	Purpose
ELPRISER_API_BASE	https://elpriser.org	Override the API base (e.g. for testing).

How it works

elpriser-mcp is a thin wrapper over the public elpriser.org REST API (/api/now, /api/prices, /api/schedule, /api/forecast, /api/supplierlookup). The full OpenAPI 3.1 spec lives at https://elpriser.org/api/openapi.json and human docs at https://elpriser.org/api.

License

MIT © elpriser.org

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Built and maintained alongside elpriser.org — aktuelle elpriser og spotpriser time for time for hele Danmark.