5 links have been added on this idea.
  1. Check this out: nitrogen generators are also used in wind turbines to increase their efficiency, leading to more cleaner energy.
    https://www.onsitegas.com/blog/nitrogen-for-renewable-energy/

  2. I came across this patent for generating electricity from the energy that is produced as liquid nitrogen expands.
    https://patents.google.com/patent/EP1929197A2/en

  3. Check out this battery that produces energy from atmospheric energy!
    https://www.asianscientist.com/2017/04/tech/nitrogen-battery-renewable-energy/