In the case of solar panels, I'm going to assume the OP is talking about something like a grid-scale solar farm instead of rooftop solar production:
1: You need an agreement with "the grid" to get payment for the electricity you generate.
2: Feeding electricity into a power grid is a very dangerous thing, at a minimum the grid operator needs to make sure you aren't going to cause a fire or otherwise break their equipment.
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That being said: If you're a homeowner trying to set up a small solar installation, you can pair the panels with batteries and skip feeding into the grid.
What is the relevance of law and law enforcement around online messaging to renewable energy legislation?
https://apnews.com/article/charlie-kirk-meme-tennessee-arres...
Or if you want some actual context rather than twitter outrage bait
> Lucy Connolly, 42, whose husband serves on Northampton Town Council, pleaded guilty in September after posting the expletive-ridden message on X the day three girls were stabbed to death in July 2024.
> She was released from HMP Peterborough earlier after she was handed a 31-month prison sentence in October at Birmingham Crown Court.
Like this one? I mean this is not some hard to find secret.
Sources:
https://www.bbc.com/news/uk-england-leeds-68448867 (does not quote a single sticker that he was jailed for)
https://www.gbnews.com/news/sam-melia-free-speech-activists-...
But we should probably pay attention to what was written on the stickers.
The UK jails people for extreme incitement