By Lauren Tyler, NGT News.

Cummins Westport Inc. has announced that production of the ISL G Near Zero (NZ) NOx natural gas engine has officially commenced and orders are now being processed.

According to the company, the ISL G NZ is the first mid-range engine in North America to receive emission certification from both the U.S. Environmental Protection Agency (EPA) and the Air Resources Board (ARB) in California to meet the optional 0.02 g/bhp-hr NZ NOx Emissions standards eight years in advance of the 2023 California NZ NOx schedule, contributing to California Clean Air initiatives.

As previously reported, exhaust emissions of the ISL G NZ are 90% lower than the current EPA and ARB NOx limit and also meet the 2017 EPA greenhouse-gas (GHG) emission requirements.