If you power that steam engine with wood or other natural (non-fossil) fuel, then it’s also carbon neutral … and might even be more environmentally friendly than charging it from grid power, since grid power may include coal and natural gas power plants.
Coal fired steam engine to charge it.
Honestly would be kinda cool to charge a bike with a steam engine though.
If you power that steam engine with wood or other natural (non-fossil) fuel, then it’s also carbon neutral … and might even be more environmentally friendly than charging it from grid power, since grid power may include coal and natural gas power plants.