Generatorsets

Generator set, commonly called a genset, is a packaged electrical power generation system that combines an electrical generator (alternator) with a prime mover, such as an internal combustion engine or turbine, to produce electric power. Gensets are designed as portable or stationary units and can serve as standby (backup) power sources or prime (continuous duty) power sources, depending on the application and contractual terms.

The core components are the generator, the prime mover, and a range of supporting systems. These include the fuel system, cooling system, lubrication, exhaust, air intake, starting and control systems, and often an enclosure to reduce noise. A control panel, sometimes paired with an automatic transfer switch, manages starting, monitoring, protection, and shutdown procedures.

Common prime movers are diesel engines, natural gas engines, dual‑fuel configurations, and, less frequently, aero‑derivative turbines or microturbines. Generators are typically three‑phase alternators rated for specific voltages and frequencies. Standby gensets automatically start on loss of utility power, while prime gensets can operate indefinitely under load, provided fuel is available.

Applications span data centers, hospitals, commercial buildings, telecommunications, construction sites, and remote power for offshore platforms or villages. In microgrids, gensets supplement intermittent renewables or provide islanded operation.

Maintenance and compliance focus on fuel quality, oil and filter changes, air and fuel filtration, cooling, emissions, and regular testing. Standards and regulations address performance, safety, and environmental impact, including noise and exhaust emissions.