Tennessee Partners Launch ‘Second-Life’ Battery Storage Project as Electric Vehicle Adoption Grows
June 20, 2022

Nissan, Middle Tennessee Electric, UT-Oak Ridge Innovation Institute, Tennessee State University and Seven States Power Corp. Announce Innovative Battery Storage Project

 

FRANKLIN, Tennessee – June 16, 2022 – Nissan, Middle Tennessee Electric, the University of Tennessee-Oak Ridge Innovation Institute, Tennessee State University and Seven States Power Corporation are teaming up to launch an innovative second-life battery storage project.

The rapid transition to electric vehicles and the escalating need for energy storage is driving demand for innovative approaches to repurposing used electric vehicle (EV) batteries to enhance the resilience of America’s electric grid. This partnership seeks to build a solution that can be helpful locally and modeled globally.

Used battery packs from Nissan ’s all-electric LEAF – the first mass-produced EV in the U.S. – will be used to construct two Battery Energy Storage Systems (BESS) at Nissan America’s headquarters in Franklin, Tenn. The retrieved packs will undergo testing and be assembled in modular, scalable storage systems. The BESS systems will provide supplemental power supply and peak demand shaving* for Nissan’s facilities and support the Middle Tennessee electric grid.

This project will repurpose Nissan’s used EV batteries, giving them a “second life” as a BESS for the Nissan electrical system. The group will also research how to best reduce energy usage, improve battery life, optimize energy distribution within the system and into the grid, house and scale the packs and system, in addition, make it easy and safe for consumers to connect to the electric grid.

The project leverages a circular process model. Batteries lose capacity to fully charge over time. When EV batteries reach that point, the battery’s performance is no longer ideal for use in the vehicle and the battery is replaced. These used batteries have an opportunity to be repurposed in other long-life applications.

The partners have built a strong, cross-collaborative team to assist in the implementation, assess performance and discover potential market applications. The University of Tennessee and Oak Ridge National Laboratory’s UT-Oak Ridge Innovation Institute will lead the research aspect of the project with Tom Zawodzinski , University of Tennessee Knoxville-Oak Ridge National Laboratory’s Governor’s Chair for Electrical Energy Conversion and Storage heading the effort. Middle Tennessee Electric , the utility provider for Nissan’s U.S. headquarters, will assist in integrating the battery storage unit into the electric grid and assess electric system impacts. Seven States Power Corporation will provide expert utility insights, consistent with its mission to design, develop, and deploy next generation technology for local power companies in the Tennessee Valley. Tennessee State University ’s College of Engineering will support this project by providing opportunities to develop diverse workforce and support environmental justice initiatives.

In addition to repurposing EV batteries, the partners will explore how best to package the battery cells to improve the ease of maintenance and to test the functionality and connectivity of control systems and building maintenance systems.

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*Peak demand shaving is the proactive management of expected spikes in energy demand. By reducing or “shaving” peak energy demand in day-to-day operations, energy can be produced more efficiently and at lower costs to the end user.

 

PARTNER QUOTES FOLLOW:

“Nissan has a long history in electrification and battery development, which we have applied to the Tennessee-built Nissan LEAF and the all-new Ariya coming in the fall. Partnering on projects like these play a critical role in driving our Ambition 2030 vision and carbon neutrality goals in the U.S.”  Kent O’Hara , President, Nissan 4R Energy U.S.

“MTE is appreciative of the collaboration with Nissan, and others, on this vital research that will positively impact the evolution of the electric grid. Distributed energy resources, such as second life batteries, will continue to support the steps MTE is taking toward smart grid investments.” Brad Gibson , Chief Cooperative Business Officer at Middle Tennessee Electric.

Seven States Power Corporation is excited to lend its technical expertise to find innovative ways to design, develop, and deploy battery technology in a way that benefits all stakeholders. Second life battery technology is one great example of how our region can lead the nation in technology and advanced manufacturing in the years to come.” Betsey Kirk McCall, President & CEO of Seven States Power Corporation

“Through the UT-Oak Ridge Innovation Institute, we’re able to bring together world-renowned scientists and engineers from UT and Oak Ridge National Laboratory like Tom Zawodzinski, our UT-ORNL governor’s chair in Electrical Energy Storage, to work with Nissan and other industry leaders to develop innovative, practical solutions.” Joan Bienvenue , Executive Director and Vice-Provost, University of Tennessee-Oak Ridge Innovation Institute

“This project provides an exciting opportunity to pull together a multi-disciplinary team of scientists and engineers to engage in a technically challenging, system-level problem with real-world outcomes. At both UT Knoxville and Oak Ridge National Laboratory, we draw from areas as diverse as electrical engineering, materials science and chemical sciences and engineering, to help provide guiding principles to realize maximum performance while maintaining safe operation.  On top of that we hope to use this as a springboard for developing an educated and diverse workforce in Tennessee and to begin to identify with our partners’ relevant areas of environmental justice impact.” Thomas Zawodzinski , UT-Oak Ridge National Laboratory Governor’s Chair in Electrical Energy Storage, University of Tennessee Knoxville

“As the EV battery industry moves to deploy second life battery technologies, it is key that we prepare an inclusive, technically capable workforce that is equipped with the knowledge and technical ability to enter industry. Tennessee State University’s College of Engineering is excited for this opportunity to create educational programs to aid in diverse workforce development for future environmental, electrical, and mechanical engineers.  Additionally, Tennessee State University has a commitment to environmental justice and is prepared to provide technical support to communities in need.” Andrea Resch Gardiner , Assistant Professor of Civil Engineering, Tennessee State University

 

PLEASE NOTE: Above is an image of Nissan’s Circular Process that is referred to in this release. This diagram was taken from the “ Nissan Motor Corporation Sustainability Report 2021 ” located at https://www.nissan-global.com/EN/SUSTAINABILITY/LIBRARY/SR/2021/

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By Jessica Bradshaw October 3, 2025
PIGEON FORGE, Tenn. — October 3, 2025 — Seven States Power Corporation (Seven States), in partnership with Sevier County Electric System (SCES), and Dollywood is proud to announce the ribbon cutting and official unveiling of 7 new electric vehicle (EV) charging stations with 14 charging ports, and 10 solar-powered umbrella charging units at Dollywood, one of the nation’s leading theme park destinations. The new EV charging stations mark another exciting step forward in advancing transportation infrastructure to support the growing demand for electric vehicles in East Tennessee. Designed, developed, and deployed by Seven States, the project reflects a commitment to innovation, community partnership, and serving Dollywood guests. The ten solar-powered umbrellas will be installed in the Country Fair area, providing guests with a convenient place to charge their devices while they enjoy watching ride goers from the comfort of the shade. “Dollywood is a treasured landmark for families and visitors from across the country,” said Betsey Kirk McCall, President and CEO of Seven States. “We are honored to partner with SCES and Dollywood to deliver technology that adds convenience for guests while enhancing innovation in the region.” The addition of the charging stations and umbrellas highlight the shared vision of Seven States Power and SCES to expand access to energy solutions across the region. SCES provides electric power to more than 61,000 customers across Sevier County, Tennessee. As a locally owned public power utility, SCES has served the community for over 80 years with a focus on reliability, affordability, customer service, and innovation. “These projects represent our commitment to supporting innovation to meet the needs of our community. By working together, we’re helping ensure that both residents and visitors have access to the energy solutions of tomorrow, right here in Sevier County," said Allen Robbins, CEO of SCES. The ribbon cutting ceremony celebrates not only the completion of these projects, but also the growing collaboration between local utilities, community partners, and attractions to create a more modern energy future for Tennessee. “This partnership with Seven States and Sevier County Electric highlights the importance of regional collaboration to build infrastructure that supports both the local community and the millions of visitors to the Great Smoky Mountains each year. By investing in this technology, we are helping pave the way for a more sustainable future, while reinforcing our role as a leader in both the tourism industry and the community we call home," said Eugene Naughton, Dollywood Parks & Resorts President. “These investments further enhance our guest experience by providing services to help meet two emerging needs of those who visit.”  The charging stations will be available for use to patrons in the Preferred Parking Lot of Dollywood Theme Park beginning October 6, 2025 while the umbrellas are available for use immediately.
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With his extensive experience in the industry, Kendall Bear’s leadership as General Manager of Rockwood Electric Utility has given him the opportunity to ensure his community is prepared for the future. “Although we’ve had many of the following systems implemented for a few years now, looking back, I would say that building a fiber network between our main office and our substations has been beneficial in a variety of ways for Rockwood Electric. This opened the door for additional technology developments such as AMI, SCADA, distribution automation, Dispatchable Voltage Regulation, a 900 Mhz radio system, and a Meter Data Management System. Implementing a GIS system was extremely valuable as well, as we are now able to export that information to other systems such as Outage Management. We have a business and customer portal from CSA that is used extensively by our employees and customers—everyone really benefits from it.” Kendall knows his LPC is responsible for both the present and future of his community’s needs, and he wants his community to know that he is always looking for ways to better their lives. “We are working very hard to provide a reliable power supply to all our customers and using these different technologies helps us manage the power system. We want to be able to provide real-time information to our customers; something they would not normally have access to without these technologies. I would also want our community to know that we are their ‘trusted energy advisor’ and every employee at Rockwood Electric is committed to helping them make good decisions about the power they use.” With so much technological advancement in the Valley, Kendall encourages fellow leaders to make a strategic plan and collaborate with their peers.  “The possibilities for innovation are almost endless, and there are a variety of products that are offered by many vendors. It is more than a little overwhelming! I would encourage a new GM to develop a strategic plan if the utility doesn’t already have one that is up-to-date. This may involve getting input from the many stakeholders in the community. After prioritizing your goals, get to work. Finally, I would tell a new GM to talk to his or her peers and colleagues a LOT. They will tell you what they have done that has been a colossal flop so you’ll know to avoid it, or they will tell you what they have been successful with. I guarantee every manager will share their story if you ask.”
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