{"uid":"cap_xNNGKfYKd--F7v5OmQgjV","slug":"2s-io-solar-irradiance-pv-yield-forecast-67c47545","name":"2s.io Solar Irradiance & PV-Yield Forecast","description":"Solar irradiance + PV-yield forecast for any coordinate (free/keyless, global). Returns a daily 1-16 day forecast: GHI (kWh/m²), peak sun hours, sunshine hours, and estimated yield per kWp of panels (at a 0.75 performance ratio). For rooftop-solar planning, agrivoltaics, and EV-charge scheduling. Complements energy.solar-resource (NREL long-run averages, US).","url":"https://2s.io/api/energy/solar-forecast?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","queryParams"],"properties":{"type":{"const":"http"},"method":{"const":"GET"},"queryParams":{"type":"object","required":["latitude","longitude"],"properties":{"days":{"type":"integer","maximum":16,"minimum":1},"latitude":{"type":"number","maximum":90,"minimum":-90},"longitude":{"type":"number","maximum":180,"minimum":-180}},"additionalProperties":false}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0036","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":"$0.0036/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0036","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0036","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_44ZPj41jKkYNVvl93oz1I","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0036","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a 1–16 day daily solar forecast (GHI, peak sun hours, sunshine hours, estimated kWp yield) for any global coordinate","exampleAgentPrompt":"Can you give me a 7-day solar irradiance and estimated PV yield forecast for latitude 34.05, longitude -118.25 — I want to know peak sun hours and how many kWh per kWp I can expect each day?","exampleUseCases":null,"resultDescription":"A daily array of up to 16 days of solar data for the given coordinate, including GHI (kWh/m²), peak sun hours, sunshine hours, and estimated PV yield per kWp of installed panels (at 0.75 performance ratio)","failureModes":["Missing required latitude or longitude returns a 400 error","Latitude outside -90 to 90 or longitude outside -180 to 180 returns validation error","Days parameter exceeding 16 or below 1 returns a schema validation error","Payment failure (x402) if USDC balance insufficient","Upstream forecast model unavailable may return 503 or empty data","Coordinates over ocean or polar regions may have reduced data quality"],"whenToPreferThis":"Choose this endpoint when you need short-term (1–16 day) daily solar forecasts for any global location, especially for rooftop solar yield estimation, agrivoltaic planning, or EV charge scheduling. Prefer over NREL energy.solar-resource when you need forward-looking forecasts (not long-run historical averages) and when the location is outside the US or you need near-term operational planning data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-14T00:34:56.649Z","isFirstParty":false,"canonicalSlug":"2s-io-solar-irradiance-pv-yield-forecast-67c47545"}