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

Live and Forecast API data parameters

Get to know the key parameters of solar radiation data, such as Global Horizontal Irradiance, Global Horizontal Irradiance, and the like, that are crucial to understanding and operating your PV power systems.

What is GHI? What is DNI? What is DHI? What is included in Solar Radiation Data?

Our live and forecast solar radiation data product contains all of the solar radiation and weather data required to run most major PV power conversion models and to meet the requirements of a wide variety of customers.

Forecast Data

Live/Recent Data (for past 7 days or past 3 months)

You can view more information about the data specifications for the live and forecast solar radiation data product at https://solcast.com/data-specifications.

• Live and Forecast API data parameters
• Forecast Data
• Live/Recent Data (for past 7 days or past 3 months)