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Generator Emissions

Cummins Power Generation is Equipped for Tier 4

The EPA’s Tier 4 regulations are frequently a source of confusion for those who rely on large stationary generators for backup and prime power uses. Owners and operators of these generator sets (gensets) have many questions about the EPA’s emission standards and what the implications mean to them.    Cummins Power Generation has developed a tool to provide you answers to all your Tier 4 questions. 

Tier 4i Literature & White Papers

2012 Stationary Generator Emissions Update for California

  • With modification to the ATCM in 2011, emergency standby generators must meet EPA regulations, hence T4i emission levels are not required by CARB. Local air districts, however, may enforce more stringent emission regulations as they see fit. Usually, this is done on a case by case basis, based on a risk screen analysis when a permit is secured.
  • In late 2011 The BAAQMD mailed out a compliance advisory to owners and operators of stationary IC engines. The subject line reads "New Emission Limits for Stationary IC Engines (Reg 9, Rule 8) and CARB ATCM's for Diesel Engines". This advisory outlines new NOx limits which go into effect on 1/1/2012. That said, page two of the advisory states that emergency engines are exempt from these new emission requirements. A link to the website with the advisory can be found at: BAAQMD Advisory
  • All new prime power stationary generators in California are subject to both CARB's ATCM and EPA's T4i emission requirements. Aftertreatment will be included on all prime power proposals.

Generator Data Sheets

Generator Size (kW) Engine Model Factory D2 Emissions Data EPA Certification
35kW QSB4.5 D2 Certification Summary Coming Soon
40kW QSB4.5 D2 Certification Summary Coming Soon
50kW QSB4.5 D2 Certification Summary Coming Soon
60kW QSB4.5 D2 Certification Summary Coming Soon
80kW QSB4.5 D2 Certification Summary Coming Soon
100kW QSB6.7 D2 Certification Summary EPA Data
125kW QSB6.7 D2 Certification Summary EPA Data
150kW QSB6.7 D2 Certification Summary EPA Data
175kW QSB6.7 D2 Certification Summary EPA Data
200kW QSB6.7 D2 Certification Summary EPA Data
230kW QSL9 D2 Certification Summary EPA Data
250kW QSL9 D2 Certification Summary EPA Data
275kW QSM11 D2 Certification Summary Coming Soon
300kW QSM11 D2 Certification Summary Coming Soon
350kW QSX15 D2 Certification Summary EPA Data
400kW QSX15 D2 Certification Summary EPA Data
450kW QSX15 D2 Certification Summary EPA Data
500kW QSX15 D2 Certification Summary EPA Data
600kW QSK23 D2 Certification Summary Coming Soon
750kW QST30 D2 Certification Summary EPA Data
800kW QST30 D2 Certification Summary EPA Data
900kW QST30 D2 Certification Summary EPA Data
1000kW QST30 D2 Certification Summary EPA Data
1250kW QSK50 D2 Certification Summary EPA Data
1500kW QSK50 D2 Certification Summary EPA Data
1750kW QSK60 D2 Certification Summary EPA Data
2000kW QSK60 D2 Certification Summary EPA Data
2500kW QSK78 D2 Certification Summary Coming Soon

Generator Technical Sales, Service & Support

Cummins West offers comprehensive genset service and maintenance packages that ensure your gensets and related systems are up and running when you need them.

For more information or to obtain a quote for your project, please contact the Power Generation Sales Engineer at the local Cummins West branch or submit an inquiry and a representative from Cummins West will contact you.