Start by using Short Names(everywhere), for All i.e Services/Devices, when you add some, And in /Setting/System/Entity-ID format, use only i.e Device-Entity
And Yes some Integrations ( In Specific Custom ) have an weird Idea of using looooong, names for their entities, which can be hard to handle, but you can change entities name manually
( And i really can’t imagine how a developer are thinking, when implemented such, as they should be aware of how an IT system works, and yet they find it appropriate to Bloat Transactions/DB/UI Etc. Etc. … it’s sad to see )
As you don’t show your full " naming " ( And it’s cropped in UI ) it’s hard to give you any hints but standard, i.e
Solar production forecast:
You know what it is " A forecast " is that relevant to “repeat”
Production, same same but different.
Energy, right , that’s what it “Produce” … You know that
Solar, Do you have any other “Production forecasts”
Estimated: Yeah that is what a forecast is … Redundant ?
Etc. Etc.
Start by i.e naming/Renaming each Service/Device by removing redundant, repeated information, and hit , Recreate Entities ( In Integrations/Devices )
I might have even have skipped “Solar” , Depending upon how/what this integration Provides, or used “SolarF” for Forecasts, SolarP for Production, Etc.
This is “The Naming” of your /Services/Devices/Entities , How You want it to “Glow/Show” in Your UI, is an entirely different things, and is Handled in The i.e Dashboards/Cards.
Think of it this way. By Default, HA records Every thing !!!
For each Name you ad 1 letter to, such entry is “filling” your DB/Storage with the Double amount bits/Byte & more( Not literally, for the DB ) , and for each the CPU/Disk/Ram needs to handle the same “increase” you create, with your Naming Strategy
PS: HomeAssistant(OHF) have recently decided to “implement” kind of a “forced” structure , which in certain cases( As they now force the first registered Entity-Name) makes it hard/impossible to “rename” (Shorten Entity Names) , regardless if they are +50 letters long with 20 dashes