Replacing Diesel-Powered Trucks With Natural Gas, Hybrid, and Battery Power

The U.S. Department of Energy, in partnership with the California Energy Commission and the South Coast Air Quality Management District, awarded $18 million to nine companies and universities to advance natural gas technology for trucks.

2 minute read

March 26, 2019, 1:00 PM PDT

By Irvin Dawid


Rural Traffic

carlos castilla / Shutterstock

The goal is to sharply reduce carbon dioxide emissions from diesel-powered medium- and heavy-duty trucksreports John Fialka for Climatewire. "The challenge is that diesel fuel, while dirtier than natural gas, contains more energy than natural gas or electric power from batteries."

According to the Paris-based International Energy Agency (IEA), CO2 from these trucks contributes 35 percent of emissions from the worldwide transportation sector. The number of trucks on the road is growing faster than passenger cars. 

In a report called "The Future of Trucks [pdf]," IEA predicts that the use of alternative fuels and greater energy efficiency of trucks could reduce CO2 emissions in trucks by as much as 75 percent by 2050.

In addition, the report, released in July 2017, notes that "oil demand from road freight vehicles accounts for around one-fifth of global oil demand, around 17 million barrels per day. While oil use of passenger cars has begun to plateau and decline in many industrialised countries, oil use from road freight vehicles continues to rise."

The March 6 announcement by the National Renewable Energy Laboratory (NREL), part of the U.S. Department of Energy, is timely as the next day, California state Sen. Nancy Skinner, D-Berkeley, introduced Senate Bill 44, dubbed “Ditching Dirty Diesel,” designed to phase out, over time, the use of polluting, diesel-fueled medium- and heavy-duty trucks and buses in California.

One of the more interesting projects comes from US Hybrid Corp. of Torrance, Calif., which "will explore the development of a natural gas-electric plug-in hybrid, using a Cummins natural gas-powered engine and a lithium-ion battery pack to see whether a hybrid truck can operate over 24 months with close to zero emissions," adds Fialka.

The three universities that will submit projects are Michigan Technological UniversityUniversity of Alabama and University at Buffalo. All nine projects and their sponsors are listed here.

Related in Planetizen:

Friday, March 8, 2019 in Climatewire

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

June 11, 2025 - Diana Ionescu

Metrorail train pulling into newly opened subterranean station in Washington, D.C. with crowd on platform taking photos.

Congressman Proposes Bill to Rename DC Metro “Trump Train”

The Make Autorail Great Again Act would withhold federal funding to the system until the Washington Metropolitan Area Transit Authority (WMATA), rebrands as the Washington Metropolitan Authority for Greater Access (WMAGA).

June 2, 2025 - The Hill

Large crowd on street in San Francisco, California during Oktoberfest festival.

The Simple Legislative Tool Transforming Vacant Downtowns

In California, Michigan and Georgia, an easy win is bringing dollars — and delight — back to city centers.

June 2, 2025 - Robbie Silver

Color-coded map of labor & delivery departments and losses in United States.

The States Losing Rural Delivery Rooms at an Alarming Pace

In some states, as few as 9% of rural hospitals still deliver babies. As a result, rising pre-term births, no adequate pre-term care and "harrowing" close calls are a growing reality.

June 15 - Maine Morning Star

Street scene in Kathmandu, Nepal with yellow minibuses and other traffic.

The Small South Asian Republic Going all in on EVs

Thanks to one simple policy change less than five years ago, 65% of new cars in this Himalayan country are now electric.

June 15 - Fast Company

Bike lane in Washington D.C. protected by low concrete barriers.

DC Backpedals on Bike Lane Protection, Swaps Barriers for Paint

Citing aesthetic concerns, the city is removing the concrete barriers and flexposts that once separated Arizona Avenue cyclists from motor vehicles.

June 15 - The Washington Post