Bioelectricity is not the same as the electricity that powers your lights when you turn on the light switch. Bioelectricity is a term that refers to the electrical events that occur during living processes and is related to the medical field of electrophysiology. Electrical currents and electrical potentials generated by or occurring within living cells, tissues, and organisms are referred to as bioelectricity. Sugarcane biomass (bagasse and straw), wood waste, charcoal, rice hulls, elephant grass, and other biomasses are used to generate renewable and sustainable electricity. The activity of electric fish like the Nile catfish and the electric eel was known in ancient times to have bioelectric effects. Bioelectric potentials are the same as potentials generated by devices like batteries or generators. The resting potential is the bioelectric potential across a cell membrane that is normally around 50 millivolts.