Shore power, or cold ironing, refers to the provision of electricity from shore-based power grids to ships at berth, enabling them to switch off their auxiliary engines, which are typically powered by diesel fuel. This process eliminates emissions from the ship’s engines while docked, improving air quality and reducing noise pollution in port areas.
Shore power is already widely implemented at ports globally, particularly in regions with strict environmental regulations, such as California and Europe. A growing number of ports are investing in shore power infrastructure, and several shipping companies are equipping their vessels with shore connection capabilities. For example, the Port of Los Angeles requires all container ships calling at its terminals to utilize shore power, resulting in significant reductions in emissions.