Solcast Products

Evaluate Data Access

Testing the Solcast data API

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Live and Forecast

How often do you update the forecast and live data?Getting started with Rooftop PV sitesWhere do I find my Resource Id?Rooftop PV ModelAdvanced PV Model

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Historical Time Series

Historical Time Series OverviewHistorical Time Series - Time Date FormatsWhat is a Time Series data 'request'? How many 'requests' do I need?Do you store old/historical forecasts?

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Grid Aggregations

Grid Aggregations

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Horizon Angles

Horizon Angles - FAQs

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Historical Forecast

Historical Forecast

Data Modelling

Modelling - FAQs

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Explaining Terms

Glossary of termsAzimuthSolar AzimuthSolar ZenithWhat is Spatial Resolution?Why we don't provide data in local time? Terrain Tilt and AzimuthWhat is tilt? How can I estimate my rooftop solar system's tilt?

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Resolution and Accuracy

Solar Radiation Forecasting and Historical DataGlobal Coverage

Solcast API

What is an API request? How many API requests do I need?

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Documentation

Postman API (Spec) Documentation

Data Parameter DefinitionsAPI Change LogWhat is an API? What is an API key? How do I use my API key?Authentication with the Solcast APIPVsystWhat is the difference between PV, PV10, PV90?

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API Troubleshoot

Data Troubleshooting

Hobbyists and Researchers

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Home Hobbyist Accounts

Home Hobbyists - FAQsIssues adding your 2nd home PV sitePV Tuning DiscontinuedCreating a second PV siteHow do I create a multiple azimuth Rooftop Solar site?How do I delete my account?

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Researchers and Academic Accounts

Researcher - FAQsResearcher and Student access to the Solcast API serviceHow do I cite the Solcast API service in my research work?

Troubleshooting and FAQs

Data Troubleshooting and FAQs

What timezone are the timestamps?

User Guides

Subscription Management

Understanding the frequency of solar forecast data updates

Solcast's real time and forecast data tracks and forecasts real clouds at a resolution of 1-2km and 5 minutes. With that, you can anticipate frequent, regular updates to help you make informed decisions.

What is the forecast update cycle? When or how often are new forecasts available? When does the 'live' data update?

All of Solcast's data products are 'Rapid Update', meaning we update all of our live and forecast data every 5-15 minutes, depending on where you're located in the world. Solcast forecast update frequency include dayahead forecasts 4 times/day.

These updates apply to the next 4 hours of our forecast data and the most recent interval of the live data. These updates occur with each new satellites scan, and include updates to each of the members of our probabilistic forecasting ensemble (represented in the P10 and P90 data in the forecasts).

• Understanding the frequency of solar forecast data updates