How many do you have? Have you clicked the mailbox to make sure you're not autoselling?
I have a tent-dwelling Sim with an off-the-grid lot, but she was doing the food aspiration so she had a fridge and a stove (both options that work off the grid). I bought her two wind turbines (also a laptop and a boombox--those, the fridge, and the stove are the only electrical items on her lot). This was fine in the spring, but in the summer she kept running out of electricity. She has no AC because she doesn't have a house. Does the fridge work harder outside in summer? (If so, the game is smarter than I thought it was.) I suppose it's possible she was "abusing" her boombox, but she did use it in the spring, too. I bought her a third windmill and had her apply "energy-efficient device" upgrades to everything and now it's fine.
So... off the grid with windmill and solar panels can be... unpredictable?
@Sid1701d9 Yeah, that definitely sounds buggy. I assume you've also reloaded the lot?
@Sid1701d9 I mean go out to manage worlds, then re-choose the lot you're playing. I've found that sometimes fixes weird problems.
