Where are you located? I've never heard of a power company needing to approve a solar installation, unless you had plans to tie into the grid. Buying solar panels and connecting to a offgrid all-in-one inverter or portable power station shouldn't require anyone's approval
Discussion
I was finally able to get through to the right person at the power company and they confirmed approval is only needed if the solar install will be connected to the grid. The installers I had spoken to were wrong.
Do you have any suggestions for self installation kits?
I don't personally have any installed systems. It's just something I've been interested in. I would watch Will Prowse on YouTube. He tests many off grid systems and is a wealth of experience.
Other youtube channels I follow:
East Texas Homestead
Oklahoma Off-grid
Projects With Everyday Dave
Rodney Hunt
Average Joe
The Solar Farmer
Jasonoid