An 'APFC Panel Manufacturer' (Automatic Power Factor Correction) is a specialist company that designs, fabricates, and supplies electrical panels that automatically correct the power factor of an electrical system. The power factor is a measure of a system's electrical efficiency; a low power factor indicates that power is being wasted. This is typically caused by inductive loads like motors, transformers, and certain types of lighting. The manufacturer's core function is to build a panel that dynamically monitors this power factor and, using a microprocessor-based relay, switches in or out a series of capacitor banks to neutralize the reactive power, thus bringing the power factor closer to the ideal value of 1.0. This process leads to significant energy savings, reduced electricity bills, and avoidance of penalties from utility companies.