# Saylor Innovations UK Grid Carbon Intensity

> Saylor Innovations UK Grid Carbon Intensity is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-28).

Returns UK electricity grid carbon intensity in gCO2/kWh with generation mix breakdown and cleanest/dirtiest half-hour windows in the next 24 hours, optionally filtered by UK postcode region

## Facts

- Endpoint: GET https://saylorinnovations.com/api/electricity/uk/carbon?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-uk-grid-carbon-intensity-bd2635d8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dPIvejag9P13rchC9ejsW

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 saylor-innovations-uk-grid-carbon-intensity-bd2635d8
```

Example prompt: What's the current carbon intensity of the UK electricity grid, and when's the cleanest half-hour window to use electricity in the next 24 hours? I'm in the RG10 area.

## When to prefer this

Choose this endpoint when you need live or near-term forecast UK electricity carbon intensity data with generation mix detail, especially when you want the optimal low-carbon time window in the next 24 hours or need regional granularity by postcode. Prefer it over generic energy APIs when the use case is specifically UK grid carbon awareness, EV charging scheduling, demand-shifting automation, or sustainability reporting.

## Known failure modes

- Invalid or unrecognised UK postcode returns null region or an error
- Carbon Intensity API upstream outage results in stale or unavailable data
- Postcode outside GB coverage (e.g. Northern Ireland) may return national figure only
- Network timeout or 402 payment failure if USDC micropayment is not properly handled

## How this service works

UK grid carbon intensity in gCO2/kWh with generation mix, the cleanest and dirtiest half hour in the next 24 hours and optional postcode region

## Output

A JSON object containing: national carbon intensity with forecast and actual gCO2/kWh values and an index band (very low to very high); generation mix as percentages across gas, coal, wind, hydro, solar, biomass, imports, nuclear, and other; a next_24h summary identifying the cleanest and dirtiest half-hour windows; an optional region object if a postcode was supplied; and metadata fields for data source and any caveats.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "postcode": {
       "type": "string",
       "description": "optional UK postcode or outward code (e.g. RG10, SW1A 1AA) for a regional figure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "national"
     ],
     "properties": {
      "note": {
       "type": "string",
       "description": "Caveat or context for reading the result"
      },
      "region": {
       "type": [
        "object",
        "null"
       ],
       "description": "Region"
      },
      "source": {
       "type": "string",
       "description": "Data source the values come from"
      },
      "national": {
       "type": "object",
       "description": "National grid carbon intensity now: forecast and actual gCO2 per kWh and the index band (very low to very high)"
      },
      "next_24h": {
       "type": [
        "object",
        "null"
       ],
       "description": "Forecast summary for the next 24 hours"
      },
      "generation_mix_percent": {
       "type": "object",
       "properties": {
        "gas": {
         "type": [
          "number",
          "null"
         ],
         "description": "Gas amount"
        },
        "coal": {
         "type": [
          "number",
          "null"
         ],
         "description": "Share of generation from coal, percent"
        },
        "wind": {
         "type": [
          "number",
          "null"
         ],
         "description": "Share from wind, percent"
        },
        "hydro": {
         "type": [
          "number",
          "null"
         ],
         "description": "Share from hydro, percent"
        },
        "other": {
         "type": [
          "number",
          "null"
         ],
         "description": "Share from other sources, percent"
        },
        "solar": {
         "type": [
          "number",
          "nul
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-uk-grid-carbon-intensity-bd2635d8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)