Sounds like your government doesn’t want you getting energy independence. Australia was like that 10+ years ago, but now it’s super easy. There are only 2 forms (one for the inverter, one for the panels) and the installer fills it all out for you. Systems <5kW per phase don’t even need prior approval, the installer just submits paperwork after the job is done. The only time it costs you, is if you need your old meter upgraded to a smart meter.