News | September 9, 2011

Caterpillar Introduces 3516C-HD Tier 4 Interim Certified Diesel Generator Set

Source: Caterpillar Inc., Electric Power Division

New unit extends industry leading lineup of Tier 4 Interim certified generator sets ranging from 455 kW to 2500 kW

Caterpillar Inc. announces recently the availability of the new Cat 3516C-HD diesel generator set, certified to meet United States EPA Tier 4 Interim standards. This 60 Hz package is rated at 2500 ekW for standby power, 2250 ekW at prime power and 2050 ekW at continuous power, offering highly efficient fuel consumption rates, compact footprint and lower emissions for prime power, peak shaving, standby and mission critical applications.

"This is the first diesel generator set producing more than 2MW that has been certified by the EPA," said Robert Koval, global product director of Caterpillar Electric Power Division. "Tier 4 Interim certified generator sets are required for high-hour applications, such as rock crushers, peaking plants and remote installations. Our emergency standby customers will also realize benefits with this genset, particularly in areas with especially stringent local standards. The lower emissions from the Tier 4 Interim generator set should eliminate or minimize the amount of additional aftertreatment needed to comply with local emissions regulations."

The 3516C-HD is the latest addition to Caterpillar's line of Tier 4 Interim certified generator sets. Ranging from 455 kW to 2500 kW, Caterpillar offers the widest range of Tier 4 Interim certified generator sets in the industry.

To provide customers with the most economical and efficient emissions solutions, Caterpillar continues to develop generator sets engineered to deliver flexibility, expandability, reliability and cost-effectiveness, while at the same time addressing the emission reduction levels required by EPA regulations. The 3516C-HD Tier 4 Interim certified generator set is optimized for use with the Cat clean emissions module (CEM). This aftertreatment system features a diesel oxidation catalyst (DOC) combined with a selective catalytic reduction (SCR) module and an air-assisted urea injection system.

This diesel generator set also features integrated electronics for monitoring, protection and closed loop NOx control, an ADEM A4 controller, Air-to-Air After Cooler cooling system, MEUI fuel system and state-of-the-art Cat EMCP 4 control panel. This simple-to-use control panel delivers a more intuitive, user-friendly interface and navigation, and is scalable to meet a wide range of customer power requirements.

Available with a full range of factory designed and tested attachments, the 3516C-HD offers flexible packaging options for easy installation and optimal performance, while minimizing impact on generator set space requirements and maintenance hours. Cat Tier 4 generator sets are capable of integrating into larger power systems that could include UPS, Switchgear and ATS products. To support this new line of generator sets, Cat Dealers and technicians will be factory trained in emissions technology installation and service.

Caterpillar is a leader in the power generation marketplace with power systems engineered to deliver unmatched durability, reliability and value. The company offers worldwide product support, with parts and service available globally through the Cat authorized service and dealer network. In addition, dealer service technicians are trained to service every aspect of Cat equipment.

For technical or dealer information, visit For additional information on emissions regulations and our emissions reduction technology, visit To interact with other power generation professionals in our online community, register at

About Caterpillar
For more than 80 years, Caterpillar Inc. has been making progress possible and driving positive and sustainable change on every continent. With 2010 sales and revenues of $42.6B, Caterpillar is a technology leader and the world's leading manufacturer of construction and mining equipment, clean diesel and natural gas engines and industrial gas turbines. For more information, visit

SOURCE: Caterpillar Inc., Electric Power Division