GF Blue logo
MenuMENU
SearchSEARCH

Vehicles in DC Fleet Receive Tech to Boost EV Battery Range, Efficiency

Energy Management Module units were installed in Chevrolet Bolts within the D.C. city government's vehicle fleet.

Christy Grimes
Christy GrimesFormer Senior Editor
May 1, 2023
Vehicles in DC Fleet Receive Tech to Boost EV Battery Range, Efficiency

An Energy Management Module was installed to a DC Public Works Chevy Bolt.

Photo: Mullen Automotive

2 min to read


UPDATE: As of July 18, 2023, D.C. Public Works is no longer testing the EMM technology on its vehicles. 

Mullen Automotive announced that its majority-owned subsidiary, Mullen Advanced Energy Operations (MAEO), began the execution of a $680,000 contract that was previously awarded by the District of Columbia, Washington, D.C., to EV Technologies, LLC.

Ad Loading...

The contract is for the purchase and installation of Energy Management Module (EMM) units on Chevrolet Bolts within the D.C. city government’s vehicle fleet. Mullen and EV Technologies’ team of engineers visited Washington, D.C. on April 24 to begin the installation of the EMM units onto 40 of DC Public Works' high usage Chevrolet Bolts and to perform the required tests included in the pilot.

MAEO has also named Lawrence Hardge to the position of Senior Vice President of Technology. Lawrence will be overseeing all technological aspects of the Energy Management Module applications.

“I am very proud that the first major field application is with the DC city government, where we will demonstrate the benefits of our EMM technology. We have been working on this bid to secure the business for some time and it is a great achievement to win this opportunity. I would like to thank the many D.C. government officials who made this a reality,” said Hardge.

Improving EV Battery Performance on Fleet Vehicles

Previous testing indicates that EMM technology substantially increases the driving range and efficiency of any current EV battery, according to Mullen. In March 2021, Element Materials Technology conducted specific vehicle testing on 2020 Chevy Bolts installed with EMM units with test results being a calculated increase in range from 269 to 431 miles, a 60% increase in efficiency.

“The DC city project is the first of many that we have planned for the new EMM technology,” Mullen Automotive CEO David Michery said. “Municipal city fleets are a perfect use case for EVs and even better with our Energy Management Modules added for extending vehicle range and performance. Ideally, the vehicles can spend less time charging and more time in the local communities for civic use and support.”

Ad Loading...

Mullen Advanced Energy Operations is a 51%-owned subsidiary of Mullen Automotive with EV Technologies, LLC and Global EV Technology, Inc. as partners.

Editor's Note: This story was updated on July 19, 2023, to reflect that D.C. Public Works is no longer testing EMM technology on its vehicles.

More Green Fleet

A graphic of solar panels.
Green Fleet•by News/Media Release•September 14, 2026

Sustainability Partners, Energy Systems Group Help Albuquerque Close the Gap on its 100% Renewable Energy Goal

The eight-site, 6 MW solar project has advanced the city toward 100% renewable energy for municipal operations.

Read More →
Port Authority's three chargers.
Green Fleet•by Staff Writer•September 8, 2026

Port Authority and CALSTART Launch $45 Million Electric Truck and Charging Programs

The programs aim to boost sustainable operations across the East Coast's busiest seaport.

Read More →
GovCast podcast graphic.
Green Fleet•September 2, 2026

Moving Government Fleets Beyond the Vehicle Purchase: EV as a Service

A discussion on how EVaaS is moving beyond pilot programs and what fleets should consider before beginning a larger deployment.  

Read More →
Ad Loading...
A graphic of EVs and a charger.
Green Fleet•by Nichole Osinski•August 26, 2026

Moving Government Fleets Beyond the Vehicle Purchase: EV as a Service

As fleets move beyond small EV pilots, Sustainability Partners CEO Adam Cain explains how EVaaS can address the infrastructure and long-term planning required for larger deployments.

Read More →
An EV line up vehicles.
Green Fleet•by News/Media Release•August 4, 2026

Peterbilt Expands Sourcewell Partnership with Electric Vehicle Lineup

The agreement aims to provide streamlined procurement of Peterbilt trucks for government, education, nonprofit and tribal organizations across the United States and Canada.

Read More →
Cover of the "Top 50 Green Fleets" report presented by Automotive Fleet and Inspiration Fleet, featuring an aerial nighttime photo of a lit highway interchange with looping ramps.
Sponsored•July 16, 2026

The Top 50 Green Fleets

The List Is in: The Top 50 Green Fleets

Read More →
Ad Loading...
A GovCast podcast logo.
Green Fleet•June 26, 2026

EV Adoption & Charging Challenges

Where is your fleet in the journey of vehicle electrification? If you're still looking for answers to fleet electrification you've come to the right place.

Read More →
Graphic of the Hawaiian Islands with the American Biogas Council logo highlighting Hawaii’s new clean fuel legislation supporting renewable natural gas and biogas energy projects.
Green Fleet•by News/Media Release•June 2, 2026

Hawaii Passes Clean Fuel Policy

Hawaii lawmakers passed clean fuel legislation that could support renewable natural gas production, biogas-powered transportation, and lower-carbon fueling options for public and commercial fleets.

Read More →
Beam Global EV ARC solar-powered charging stations installed in Stanislaus County, California, providing off-grid EV fleet charging with on-site renewable energy.
Green Fleet•by News/Media Release•May 29, 2026

Stanislaus County Deploys Ten Beam Global EV ARC Systems to Support County Fleet Electrification

Stanislaus County deployed 10 off-grid solar-powered EV charging systems and a mobile charging trailer from Beam Global to support its electric fleet operations and emergency response flexibility.

Read More →
Ad Loading...
a battery electriv city bus and a Heliox battery charger
Green Fleet•by Staff Writer•May 26, 2026

Heliox Pilots 480-kW Bus Charger with King County Metro

King County Metro is piloting Heliox’s new 480-kW Flex Pro charger to support expansion of its battery-electric bus fleet and depot charging infrastructure. The compact charging system supports pantograph and plug-in charging configurations for high-density transit operations.

Read More →