I have both Solcast and Forecast.Solar integrations installed. When I put either as my solar forecast on the Energy Dashboard I can see forecasts for days in advance.
Where can I find the data for these forecasts? All I see is entities sensor.power_production_next_24hours and sensor.solcast_forecast_tomorrow respectively.
WIth Forecast.Solar you only get today and tomorrow for free. You can have a subscription to get future data (https://forecast.solar/). You can enter an API key (optional) in the HA Forecast.Solar config.