http://www.greencarcongress.com/2018/05/20180508-rng.htmlSix trucking firms deploy ultra clean near-zero RNG trucks at Ports of Long Beach and Los Angeles
Six trucking firms operating in the Ports of Los Angeles and Long Beach are deploying trucks powered by Cummins Westport (CWI) near-zero ISX12N engines (earlier post), and fueled with Clean Energy Fuels Corp.’s Redeem brand renewable natural gas (RNG) in an effort to reduce emissions and improve air quality in the ports and surrounding communities. . . .
The California Energy Commission and the South Coast Air Quality Management District provided funding for 20 near-zero Class 8 trucks. The Ports of Los Angeles and Long Beach provided funding for two additional near-zero trucks. The first four near-zero trucks have been successfully operating since mid-2017 and an additional four have been operating since February 2018. . . .
The ultra clean CWI engines achieve the lowest emissions of any heavy-duty engine used in any truck in North America, yet deliver diesel caliber performance with reliability and durability.
The US Environmental Protection Agency (USEPA) and California Air Resources Board (CARB) certified these engines in December 2017 at CARB’s optional low-NOx standard of 0.02 g-NOx/bhp-hr—90% lower NOx emissions than the current EPA NOx standard. The new engines were tested as low as 0.01 g-NOx/bhp-hr, achieving virtually zero tailpipe emissions. Factory production of ISX12N engines began in February.
All these trucks will be fueling at Clean Energy’s network of California stations with Redeem fuel, which reduces greenhouse gas (GHG) emissions by 70% versus diesel. RNG is the cleanest fuel for trucking today, with some GHG sources even reducing GHG by over 100%. . . .
Per the Redeem website, the RNG is methane from landfills and farms (not sewage treatment plants?): http://redeem.cleanenergyfuels.com/
I took a tour of our local sewage treatment plant this past weekend (they had an open house), and they both capture methane from sewage for CHP along with a 468kW grid-intertied solar array to run the plant: https://oroloma.org/sewage-treatment/