Advanced VGI Control to Maximize Battery Life and Use of Second-Life Batteries to Increase Grid Service and Renewable Power Penetration

Demonstrating a cost-effective, scalable approach to deploying second-life electric vehicle batteries.

Lawrence Berkeley National Laboratory


Berkeley, CA

Recipient Location


Senate District


Assembly District



Amount Spent



Project Status

Project Update

Memorandums of Understanding (MOUs) between CEC and the Los Angeles Air Force Base (LAAFB) for energy projects and between the United States Air Force and the LAAFB for electric vehicle charging equipment installation and maintenance have been agreed upon. The MOU between the CEC and LAAFB is in the process of being signed. The chargers will be installed on LAAFB early this year. The project team will then develop and test a software solution for accurately monitoring and calculating electricity costs for each personally-owned electric vehicle charging session and implement a plan for participation in the day-ahead demand response program.

The Issue

California needs to shift plug-in electric vehicle (PEV) charging from overnight home charging to daytime workplace charging so that charging load better coincides with solar power generation. A major challenge military bases face in promoting employee PEV adoption through workplace charging is meeting government cost recovery requirements. Military bases have attempted to deploy commercial off-the-shelf products (hardware and software) to address charging at federal facilities, but demand is often not sufficient to support the ongoing cost of software, operations, and maintenance. Further, these products lack capabilities to locally curtail charging in response to demand and meet current security requirements.

Project Innovation

This project will develop a software solution to monitor the cost of electricity delivered to personally owned and fleet electric vehicles using shared chargers, ensure cost recovery requirements for military bases and other government workplaces are met, and meet government security requirements. Charging data will be collected to inform advancement of similar solutions for other military bases and government workplaces across California.

Project Goals

Recover personally owned electric vehicle workplace charging costs at military bases and other government workplaces.
Manage charging to maximize service to drivers and minimize additions to monthly peak demand charges.

Project Benefits

Project activities resulting in benefits include (1) developing accounting and settlement methods to recover personally owned electric vehicle workplace charging costs at military bases and other government workplaces, (2) managing charging for chargers behind the same meter as buildings to maximize service to drivers and minimize additions to monthly peak demand charges, and (3) determining costs and benefits of combining charging stations with solar generation and/or battery energy storage. These costs and benefits will be simulated for sites and conditions other than Los Angeles Air Force Base.

Greater Reliability


The managed charging system will be able to control charging of all personally owned and fleet workplace electric vehicles and ensure distribution system health is not compromised.

Economic Development

Economic Development

Personally owned electric vehicle drivers that utilize charging stations at military bases and other government workplaces will be appropriately compensated with the use of this project's developed software solution that meets government requirements.

Key Project Members

Project Member

Douglas Black

Grid Integration Group Leader
Lawrence Berkeley National Laboratory
Project Member

Christoph Gehbauer

Technology Researcher 3
Lawrence Berkeley National Laboratory


grade Tech Partner

TechFlow, Inc.

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