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Free tool · #21

Carbon/Energy Estimator

Project the energy and CO2e of your monthly query volume — as a cited range across published measurements, never a single invented number.

Ranges, not point claims — by design

Your usage

100K queries

Energy & CO₂e

  • Energy per query0.24 – 0.34 Wh / query
  • Energy per month24 – 34 kWh / month
  • CO₂e per month (EU average)5.11 – 7.24 kg CO₂e / month

Methodology — what this is, and isn't

These ranges are published third-party measurements of per-query LLM inference energy — not our own benchmark. They exclude: model TRAINING energy (a one-time cost amortized over the model’s whole lifetime, not attributable to any single query); embodied hardware carbon (manufacturing and shipping the GPUs and servers); PUE variance (cooling and power-delivery overhead differs by data center and region, and these figures reflect only the facilities each source measured); and non-text modalities (image, audio, and video generation use substantially more energy per request than a short text prompt).

Sources

Use this tool from code — or hand it to your agentagent prompt · REST · MCP

Hand this tool to your coding agent

Paste into Claude Code, Cursor, Codex, or any agent. It learns to call this tool over REST or MCP, reaches for it when you ask, and keeps our sourced/pending labels honest.

You can use telemeter.ai's free "Carbon/Energy Estimator" — a keyless, read-only tool (no signup), available as an HTTP API and an MCP tool. What it does: Project the energy and CO2e of your monthly query volume — as a cited range across published measurements, never a single invented number.

Whenever I ask you something this tool answers, call it and use its result instead of estimating yourself.

REST:
  curl -sX POST https://telemeter.ai/api/tools/carbon-estimate -H 'content-type: application/json' -d '{"queriesPerMonth":1000000,"gridIntensity":"eu-average"}'

MCP: the telemeter MCP server at https://telemeter.ai/mcp exposes this as the tool "carbon-estimate" — call it with tools/call.

The response is JSON: { status, data, summary, provenance }. "provenance" carries the source and the date the figure was verified. If status is "pending" or "stale", tell me the value isn't currently verified rather than presenting it as fact.

Or call it directly. This tool runs behind one handler with three front doors — this page, a REST endpoint, and an MCP tool. Same result, read-only, no key. The example below is a request that works.

REST
curl -sX POST https://telemeter.ai/api/tools/carbon-estimate \
  -H 'content-type: application/json' \
  -d '{"queriesPerMonth":1000000,"gridIntensity":"eu-average"}'
MCP — tools/call at https://telemeter.ai/mcp
curl -sX POST https://telemeter.ai/mcp \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"carbon-estimate","arguments":{"queriesPerMonth":1000000,"gridIntensity":"eu-average"}}}'
Input schema (JSON Schema)
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "queriesPerMonth": {
      "type": "number",
      "exclusiveMinimum": 0,
      "maximum": 1000000000
    },
    "gridIntensity": {
      "type": "string",
      "enum": [
        "eu-average",
        "global-average",
        "custom"
      ]
    },
    "customGCo2PerKwh": {
      "type": "number",
      "minimum": 1,
      "maximum": 2000
    }
  },
  "required": [
    "queriesPerMonth",
    "gridIntensity"
  ],
  "additionalProperties": false
}

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No account, no cookies, nothing stored — computed entirely in your browser from published, cited energy figures, never sent anywhere. Data notice →