# \[APP\]\[Pro\] Solar Forecasts (SolCast + Forecast.Solar)

**URL:** <https://community.homey.app/t/app-pro-solar-forecasts-solcast-forecast-solar/46842>\
**Category:** Apps\
**Created:** [April 29, 2021, 7:25am UTC](https://community.homey.app/t/app-pro-solar-forecasts-solcast-forecast-solar/46842 "2021-04-29T07:25:41Z")\
**Posts on this page:** 1\
**Showing post:** 232

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**Author:** ![fmb](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/fmb/32/27097_2.png) [@fmb](https://community.homey.app/u/fmb)\
**Post date:** [August 30, 2024, 3:11pm UTC](https://community.homey.app/t/app-pro-solar-forecasts-solcast-forecast-solar/46842/232 "2024-08-30T15:11:51Z")

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I have 2 seperate systems which differ from eachother. I choose to add those as two different systems in SolCast. Any best practices how I can combine those in one device?  
I was thinking to make a virtual device and (with a flow) combine the values together in that virtual device. Or are there any better suggestions here?

[Edit]  
I am learning by the day 🙂

I was using Advanced Virtual Devices already (app [[APP][Pro] Advanced Virtual Device (Device Capabilities App) with Unique Text Status Indicator](https://community.homey.app/t/app-pro-advanced-virtual-device-device-capabilities-app-with-unique-text-status-indicator/68198/1) ), but did not yet discover that an Advance Virtual Device by default can sum (or average, or other calculations) values of multiple other devices. So this works! 🙂

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