Overview#
The Generac SD015 is a 15-kilowatt industrial diesel standby generator powered by a Perkins 2.22-liter turbocharged inline-four engine. Rated at 15 kW standby and 13 kW prime, it is EPA Certified for Stationary Emergency applications and shares the same compact footprint and enclosure system as the SD010, making it a direct capacity upgrade for applications where 10 kW is insufficient. The generator is available in both single-phase (120/240 VAC) and three-phase configurations across voltages from 120/208V to 346/600V.
Generac pairs the Perkins engine with their K0025124Y21 alternator featuring Class H insulation and synchronous brushless excitation. The Digital H control panel provides NFPA 110 Level I and II programmable operation, Modbus communications, and a 7-day programmable exerciser. The engine coolant heater and closed coolant recovery system ship as standard equipment.
At 15 kW, this unit is well suited to small commercial facilities requiring slightly more capacity than the SD010: larger restaurant kitchens, small medical offices, security systems, and facilities with emergency HVAC loads. The identical physical package to the SD010 simplifies specification and permitting for facilities that may need to upsize from a previously installed smaller unit.
Technical Specifications#
| Parameter | Value |
|---|---|
| Standby Rating | 15 kW / 19 kVA |
| Prime Rating | 13 kW / 16 kVA |
| Engine Make | Perkins |
| Displacement | 2.22 L (135 in³) |
| Cylinders | 4, In-Line |
| Aspiration | Turbocharged |
| Compression Ratio | 23.3:1 |
| Engine Speed | 1,800 RPM |
| Alternator Model | K0025124Y21 |
| Insulation Class | H (rotor and stator) |
| Fuel Type | Ultra Low Sulfur Diesel |
| Fuel Consumption (100%) | 1.4 gph |
| Fuel Consumption (75%) | 1.1 gph |
| Fuel Consumption (50%) | 0.9 gph |
| Fuel Consumption (25%) | 0.7 gph |
| Exhaust Flow | 179.0 cfm at rated output |
| Exhaust Temperature | 535°F (279.4°C) |
| Heat Rejection to Coolant | 69,980 BTU/hr |
| Combustion Air | 80.1 cfm |
| Open Set (no tank) L x W x H | 76.0 x 37.4 x 44.8 in |
| Open Set Dry Weight (no tank) | 1,456 -- 1,641 lbs |
| Max Ambient Temperature | 122°F (50°C) |
Our Service Experience#
The SD015 occupies the same installation footprint as the SD010 and is serviced identically. In practice, many small commercial facilities that initially specified 10 kW generators return to request a 15 kW replacement when load growth -- added HVAC equipment, expanded POS systems, expanded lighting -- pushes them past 10 kW peak demand. The identical footprint of the SD015 makes that upgrade straightforward.
The Perkins 2.22L engine requires clean ULSD fuel; the distribution injection pump is sensitive to water contamination and microbial growth in long-dwell diesel. We recommend biocide treatment and annual fuel polishing for any SD015 installation where the unit exercises fewer than 12 times per year. Verify coolant heater operation before cold-weather season, and maintain 50/50 ethylene glycol coolant per Generac's specification.
Frequently Asked Questions#
Does the SD015 require any additional infrastructure versus the SD010? The SD015 uses the same enclosure, fuel tank, and mounting options as the SD010. No additional infrastructure changes are required when replacing an SD010 with an SD015 in the same pad location, assuming the sub-base tank and transfer switch were already sized conservatively.
Is the SD015 available in 600V configuration? Yes. The SD015 is available in 346/600 VAC three-phase at 18 amps full-load at 0.8 pf, covering Canadian distribution systems and US facilities with 600V distribution panels.
What warranty does the SD015 carry? Standard warranty is 2 years limited for standby-rated units and 1 year for prime-rated units. Extended warranty options from 2 to 10 years are available through Generac Industrial dealers.
