Solcast Products

Evaluate Data Access

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Live and Forecast

How often do you update the forecast?

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Historical Time Series

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

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Typical Meteorological Year (TMY)

Testing the historical data TMY API

Data Modelling

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Explaining Terms

AzimuthWhat is Spatial Resolution?Why we don't provide data in local time?

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Resolution and Accuracy

Solar Radiation Forecasting and Historical DataGlobal Coverage

Solcast API

Data Troubleshooting

Subscription Management

Hobbyists and Researchers

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Home Hobbyist Accounts

PV Tuning DiscontinuedIssues adding your 2nd home PV site

Troubleshooting and FAQs

Data Troubleshooting and FAQS

Third Party Integrations

User Guides

Hobbyist And Researches

Historical forecasts are not archived

While we don't store old forecasts, Solcast provides forecasting solar data with proven accuracy levels. Learn how you can access them.

Can I access old forecasts? Do you have old forecasts archived? How do I see past forecast data? How accurate are your forecasts?

We do not store our forecasts.

This is simply because of the incredible volume of forecasts we generate - 600 million each hour!

If you are interested in forecasting accuracy, there are a few things you can do:

1. Use the API Toolkit to create a site at your location of interest and then review the 'accuracy' chart which has the 1-hour ahead forecasts for the past 7 days archived. 2. Use the API Toolkit to create a site at your location of interest and begin downloading the forecast data regularly for your own comparison. 3. If you need these data for a project and have budget available, we can offer one-off forecast extracts for you at cost. Get in touch with us to learn more!

On this page

• Historical forecasts are not archived