Overview#
The Generac SD2500/MD2500 is a 2,500-kilowatt industrial diesel generator powered by a Baudouin 65.6-liter V12 turbocharged and aftercooled diesel engine. This unit is EPA Tier 2 Certified for Stationary Emergency applications and offers both a standby rating of 2,500 kW and a Data Center Continuous rating of 2,250 kW. The SD2500 and MD2500 designations share the same spec sheet and power platform.
Generac pairs the Baudouin engine with the K2500064N24 alternator featuring Class H insulation, permanent magnet excitation, and sealed ball bearings with direct-drive coupling. The DSE G8601 controller provides comprehensive generator management with advanced PLC functionality, SNMP integration, and IP65-rated display. Standard features include a pre-lube system and fuel cooler.
The Baudouin 65.6L platform at 2500 kW#
The SD2500/MD2500 shares the same Baudouin 65.6L V12 engine block used in the SD2250/MD2250, but tuned for higher output. At standby rating, it produces 3,621 horsepower with BMEP of 398 psi and piston speed of 2,538 ft/min. The higher BMEP compared to the 2250's 368 psi means the engine is working harder per cycle. The high-pressure common rail electronic injection system with 4-micron fuel filtering delivers precise fuel metering. The 402-quart (380-liter) oil capacity with gear-driven pump and full-flow spin-on cartridge filtration supports the heavy-duty operating requirements. The 72-inch pusher fan provides 90,000 cfm airflow across the radiator, and the coolant system holds 174.3 gallons.
Our service experience#
The SD2500/MD2500 is increasingly specified for data center backup power in Northern California, where its Data Center Continuous rating of 2,250 kW supports extended parallel operation with the utility grid. At the same physical footprint as the SD2250 (267 x 113 x 123 inches), facility planners can upgrade capacity without modifying foundations or enclosure infrastructure. Fuel consumption of 174.7 gph at full load demands substantial bulk fuel storage -- a facility operating at 75% load for 48 hours of runtime requires over 6,500 gallons. The redundant starting system option eliminates single points of failure in the cranking circuit, which is essential for mission-critical installations. We recommend duplex fuel-water separators for any standby installation where fuel sits for extended periods.
