The EPA (Environmental Protection Agency) requires a Tier 4-certified generator if it will be operated more than 50 hours per year for non-emergencies, or the owner has a relevant financial arrangement with the local utility. Tier 4 Interim regulations came into effect on January 1, 2011 and Tier 4 Final will be effective January 1, 2015. Tier 4F emissions standards are much more stringent than Tier 4i, with the limit on particulate matter (PM) being reduced to near-zero levels, thus requiring PM reduction below the Interim levels. This makes the Tier 4 Final aftertreatment system substantially more expensive than the Tier 4 Interim solution.
So if you are planning a project for 2014 and beyond, consider the option of buying Tier 4i-certified generator sets NOW while you still can, because Tier 4i technology is much simpler and cheaper than Tier 4F. As of January 1, 2015 when Tier 4 Final takes effect, you will no longer be able to purchase Tier 4i generator sets.
Cummins Power Generation offers a complete range of generators (680 – 2750 kW) meeting both Tier4i and Tier4F federal emissions regulations TODAY. If you’d like more information, contact your local Cummins distributor.