Electric power generation from ambient humidity using protein nanowires

A method of continuously producing electric power using atmospheric relative humidity in an ambient environment, the method comprising:

• providing an electric power generation device comprising:
• a thin film or biofilm of protein nanowires or a nanowire composite, the thin film or biofilm having an opposing first surface and second surface,
• a first electrode electrically connected to the first surface of the thin film or biofilm, and
• a second electrode electrically connected the second surface of the thin film or biofilm;
• at least partially exposing at least one of the first surface and the second surface of the thin film or biofilm of the electric power generation device to the ambient environment, wherein the atmospheric relative humidity is at least 20%, forming and maintaining a moisture gradient in the thin film or biofilm, and
• continuously generating power in the electric power generation device.