Direct current (DC) is a continuous flow of electricity in one direction through a wire or conductor. DC is created by generators such as fuel cells or photovoltaic cells, and by static electricity, lightning, and batteries. By convention, electric current flows from a high to a low potential; for example, in a battery, from a positive to a negative pole.
Our latest five minute guide gives a high level overview of the usage of DC including the advantages as well as the challenges. It also looks at the uses of DC in various markets and how it can be used in buildings.