# UK Grid Carbon Intensity

> UK Grid Carbon Intensity is a paid API for AI agents from bess-x402.onrender.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-28).

Returns real-time and forecast GB electricity carbon intensity (gCO2/kWh) with generation mix and lowest-carbon scheduling slot, nationally or by postcode region.

## Facts

- Endpoint: GET https://bess-x402.onrender.com/v1/power/uk-carbon?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/uk-grid-carbon-intensity-aba11039
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7c-841ABMislZYSGHxD4N

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability uk-grid-carbon-intensity-aba11039
```

Example prompt: What's the current carbon intensity of the UK electricity grid for the SW1A postcode area, and give me a 24-hour forecast so I know the lowest-carbon window to charge my EV?

## When to prefer this

Choose this endpoint when you need real-time or forecast UK grid carbon intensity data to schedule flexible electricity loads (EV charging, heat pumps, batch compute) or to report on the live generation mix. It is specifically scoped to Great Britain and supports regional granularity by postcode, making it more useful than generic energy APIs for UK sustainability scheduling use cases.

## Known failure modes

- Invalid postcode returns an error or falls back to national data
- hours parameter outside 1-48 range returns validation error
- Upstream National Grid ESO API outage causes data unavailability
- Render cold-start latency on first request after idle period

## How this service works

Great Britain electricity carbon intensity (gCO2/kWh) now, nationally or for a postcode region, with the generation mix (wind, gas, nuclear, solar, imports) and a half-hourly forecast up to 48h including the lowest-carbon slot. Use to schedule EV charging, heat pumps or compute jobs.

## Output

Returns current carbon intensity in gCO2/kWh (national or regional), the live generation mix breakdown (wind, gas, nuclear, solar, imports as percentages), a half-hourly carbon intensity forecast for up to 48 hours, and the identified lowest-carbon time slot within that window.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "hours": {
       "type": "integer",
       "description": "Forecast hours (1-48)"
      },
      "postcode": {
       "type": "string",
       "description": "GB postcode or outward code (optional)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/uk-grid-carbon-intensity-aba11039/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bess-x402.onrender.com](https://www.zero.xyz/host/bess-x402.onrender.com/llms.txt)