electric energy vs electrical energy

electric energy

noun
  • Electrical energy. 

  • The potential energy of an electric charge in an electric field, or of an electric current in a magnetic field. 

electrical energy

noun
  • Energy made available for consumption or consumed in the form of electricity or electric power; electricity. 

How often have the words electric energy and electrical energy occurred in a corpus of books? (source: Google Ngram Viewer )