{"uid":"cap_BOYXIgIOEDfU0io4qN4ni","slug":"gb-carbon-intensity-api-neso-6bca4e9c","name":"GB Carbon Intensity API (NESO)","description":"Carbon intensity of Great Britain's electricity grid from the official NESO Carbon Intensity API (CC BY 4.0), in half-hour periods with a low/moderate/high index. No params -> current national half-hour; ?horizon=fw24h|fw48h adds the forecast; ?region=1..17 (13=London) switches to a DNO region and includes the generation mix per fuel. 30-min upstream cadence, 30-min cache.","url":"https://x402-datashop-production.up.railway.app/v1/gb/carbon","method":"GET","headers":{},"bodySchema":{"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","properties":{"region":{"type":"string","description":"DNO regionid 1-17 (optional; 13=London)"},"horizon":{"enum":["fw24h","fw48h"],"type":"string","description":"Forecast window from now (optional)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_TvviVUl7ia1ByEG0m1chR","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the current or forecasted carbon intensity of Great Britain's electricity grid in half-hour periods, with optional regional breakdown and generation mix by fuel type.","exampleAgentPrompt":"What's the current carbon intensity of the GB electricity grid, and can you show me the 24-hour forecast and generation mix for London (region 13)?","exampleUseCases":null,"resultDescription":"Returns the current national or regional carbon intensity value in gCO2/kWh with a low/moderate/high index for each half-hour period. If a forecast horizon is specified (fw24h or fw48h), returns upcoming half-hour forecast periods. If a region is specified, also returns the generation mix broken down by fuel type for that DNO region.","failureModes":["Invalid region ID (outside 1-17) returns an error","Invalid horizon value (not fw24h or fw48h) returns a validation error","Upstream NESO API unavailable results in a 502/503 error","Stale data if upstream cadence delayed beyond 30-minute cache window"],"whenToPreferThis":"Use this endpoint when you need authoritative, real-time or near-term forecast carbon intensity data specifically for Great Britain's electricity grid, including regional (DNO) breakdowns and per-fuel generation mix. Prefer this over generic energy data APIs when GB-specific official NESO data and the low/moderate/high index classification are required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:55:03.636Z","isFirstParty":false}