Direct Current Transmission (DC transmission) is a method of transmitting electrical energy where the current flows in a single direction. Unlike Alternating Current (AC), which changes direction periodically, DC is more efficient for long-distance power transmission. This is because it reduces energy losses that occur due to resistance in the wires. DC transmission systems often use converter stations to change AC power from the grid into DC for transmission. Once the electricity reaches its destination, another converter station transforms it back into AC for use in homes and businesses. This technology is increasingly used for renewable energy sources like solar and wind power.