Generatorfed

Generatorfed is a term used in electrical engineering to describe a power system configuration in which electrical power is provided primarily by on-site generators rather than by the utility grid. The term can apply to standalone generator sets as well as to compact, integrated systems used to supply buildings, campuses, or remote facilities.

In generatorfed architectures, one or more prime movers—such as diesel, natural gas, or biogas engines—drive electrical generators connected to a local distribution network that supplies loads. Systems may pair generators with energy storage, power electronics, and protective relays, and may include automatic transfer switches to connect or disconnect alternate power sources.

Control and operation focus on maintaining stable voltage and frequency, efficient load following, and seamless transitions during outages or reconnection to other sources. Controls use techniques such as governor regulation, droop control, and sequencing logic, while protection schemes detect faults and coordinate with building management, telemetry, and remote monitoring.

Applications range from facility emergency generators and remote telecom sites to off-grid microgrids and temporary events. Generatorfed systems are contrasted with grid-fed arrangements where the utility supplies the load; advantages include resilience and independence from grid disturbances, while drawbacks include fuel logistics, emissions, maintenance, and the need for fuel storage and logistics planning.

Related concepts include stand-by generation, microgrids, and islanding, and implementations are found in industrial facilities, healthcare campuses, data centers, and remote installations. As technology advances, generatorfed configurations increasingly integrate with building management systems and smart controls to optimize reliability, fuel use, and emissions.