What is the difference between AC and DC power?
AC – or alternating current – is the power that comes from standard wall outlets and is well suited for traversing long distances (i.e. from a power station to a building). The power that naturally comes from batteries and solar panels is direct current, or DC. Some electrical devices use AC power and some use DC power. Generally big motors and older (buzzing) fluorescent lighting use AC power while modern digital devices (IT equipment, sensors, etc.) and electronic lighting use DC power.
