Compact Performance
When Mission Critical can mean grain elevators or data towers, irrigation pumps or HVAC systems, stable power makes all the difference when it matters most. Flexible deployment and ample capacity makes the Generac 500kW Diesel Generator an ideal solution when you need portability that packs a punch.
Rugged and Purpose-Built
Since its founding in 1959, Generac has built a reputation for delivering dependable, industrial-grade power systems engineered for the toughest environments. Today, it remains a backbone of industrial power, manufacturing diesel and natural gas units trusted by facilities managers, engineers, and operators who depend on proven performance every day.
Generac’s stationary generator line, including this SD500 model, is designed for resilience, efficiency, and long-term performance across critical infrastructure settings. Each unit emerges from a vertically integrated manufacturing process that ensures enclosure integrity, weather resistance, and noise control are built in, not added on
Featured Unit
The Generac SD500 sits in the sweet spot for industrial power, balancing mobility and output for sites that need dependable standby power. This 2019 Perkins-powered diesel unit is rated at 500kW and shows only 571 hours. The enclosure keeps weather and noise in check while protecting critical components for long service life.
This model is configured for 277/480v, three-phase operation with a 12-lead reconnectable alternator for flexible voltage setups. It delivers 751 amps with an 800-amp circuit breaker for protection, and the integrated 1,026-gallon base tank supports extended runtime during prolonged outages. The package measures 229″ x 71″ x 106″ and weighs approximately 13,500 lbs, making it a manageable footprint for transport and installation. Unit details: SD500, serial 3004189722, located at our Brighton facility.
Every generator we sell is fully inspected and load-bank tested by our EGSA-certified team in Brighton before shipment. The SD500’s combination of output, efficiency, and portable enclosure makes it a proven performer for agriculture, manufacturing, telecommunications, utilities, and other mission-critical applications.
Real-World Applications
A 500kW class generator hits a proven sweet spot: big enough to carry mission-critical loads, compact enough to deploy quickly. In real operations, units at this size keep production lines, building life-safety systems, data rooms, and heavy HVAC online when the grid can’t.
Agriculture
In modern farming, power interruptions can stop essential systems in seconds. A 500kW diesel generator can run multiple high-horsepower pumps, grain dryers, or conveyors simultaneously, keeping operations steady. During Hurricane Helene in 2024, farms across Georgia relied on backup power to protect crops, livestock, and cold storage when outages lasted for days. The SD500’s runtime and durability make it ideal for maintaining feed systems, ventilation, and refrigeration in demanding environments.
Telecommunications
Reliable communication depends on uninterrupted power to cell sites, routers, and cooling systems. With UPS batteries lasting only minutes, standby generation is vital for long outages. Diesel generators in the 300–500kW range, like the SD500, provide stable power to switching hubs and relay sites that keep networks running. During Winter Storm Uri in 2021, many telecom providers stayed operational thanks to units like these that kept signals live while the grid was down.
Healthcare
Hospitals and clinics rely on backup systems that start instantly to protect patients and equipment. A 500kW generator can carry life-safety circuits, imaging systems, and HVAC for mid-sized facilities or support specific wings in larger hospitals. The SD500’s quick start-up and efficient runtime offer confidence for facilities where even a brief outage can impact care.
Utilities and Municipal Infrastructure
Water treatment plants and pump stations need dependable backup power to maintain essential services. A 500kW generator can operate multiple motors, aeration systems, and monitoring equipment during grid failures. Whether supporting a lift station or emergency operations center, the SD500 provides the power and endurance needed to keep infrastructure online when utilities can’t
Why 500kW works: It pairs portable packaging with industrial headroom, supporting multi-motor starts, UPS recharge, and HVAC simultaneously, making the SD500 a practical, quickly deployable block for ag producers, telecom operators, and critical facilities alike
Why Choose Generator Source?
With over 50 years of experience in industrial power systems, Generator Source stands behind every generator we sell. Our EGSA-certified technicians perform full inspections, maintenance, and load testing to ensure each unit meets operational standards. We offer nationwide shipping, on-site service, and flexible purchase or trade-in options, delivering dependable power backed by trusted expertise.
Ready to Power Your Operation?
This Generac 500kW SD500 diesel generator is fully tested, inspected, and available now from our Brighton, Colorado facility. Contact our sales team for details or browse our current Generac inventory to find the right power solution for your operation.