Just Cause 4 is a rather popular title nowadays, not least because of its ridiculous easter eggs. With all the mooing going on, it's sometimes hard to remember that Just Cause 4 has an actual campaign, and one obstacle you'll face playing it are the infamous generators.
Just Cause 4 generators are a special (explosive) object which powers certain buildings, equipment, and such. In order to disable those, of course, it's important to kill said generators, but that's not such a straightforward task, as it turns out.
In order to destroy generators in Just Cause 4, first you'll need to locate a strategic compound housing them, and you can do so through the use of the game's AR scanning functionality. These buildings will be marked with a green holographic denotation, clearly demonstrating where you need to go.
To access any such building, you're going to have to knock down its doors, which can be done through the use of - you've guessed it - excessive amounts of explosions. In a pinch, though, feel free to grapple-launch nearby red barrels at the doors for a quick entry.
Once you're inside any of these buildings, it's only a matter of time before you come across a massive generator (pictured above), but you're quickly going to notice that it's protected by a heavy cover. What you want to do is use your grappling hook to pull the lid off (double-grapple the lid to a wall, then trigger the hook), exposing the generator's juicy innards. Shoot that, and you're done.