It’s a rather simple mod, but I’ve created two simple vehicle parts that can be used to create kinetic energy out of… Nothing. It’s on the player to use these responsibly and place them in places that make sense.
Axle with paddles: 1000Watts of kinetic energy. Should be placed next to a river. Should. But it’s up to you, if you want to be a cheater cheater moose brain eater. Ideally its output would change according to season, but that’s beyond what it achievable by JSON, I believe.
Gravity powered engine: 100Watts of kinetic energy. Needs to be hooked up to an bicycle alternator and battery to work. Will power a dashboard light. Inspired by this: https://www.deciwatt.global/gravitylight/