1099-MISC for Solar panels

I am using the 2024 TurboTax app for macOS, Sequoia 15.3.2.   I've received a 1099-MISC for electricity generation by my solar panels.  This was not a problem for 2022 and 2023.  But, now when I enter the information, it treats this income as a business and asks for my "Principal Business Code".  

 

I tried the solutions from last year in the following article, but it didn't work for me:

 

https://ttlc.intuit.com/community/taxes/discussion/received-1099-misc-solar/01/2930992#M1069759

 

A prompt response is appreciated.