California-based B2U Storage Solutions successfully deploys a solar power and energy storage installation using second-life EV batteries in New Cuyama, Santa Barbara County, CA.

As the popularity of electric vehicles (EVs) continues to rise, so does the concern about what happens to their batteries once they reach the end of their life cycle. However, a California-based company called B2U Storage Solutions is challenging the notion that EV batteries are difficult to recycle or repurpose. In fact, they have recently made a breakthrough by using second-life EV batteries for a solar power and energy storage project in New Cuyama, Santa Barbara County, CA. This innovative approach not only extends the lifespan of these batteries but also showcases their potential for stationary energy storage. CleanTechnica had the opportunity to speak with Freeman Hall, co-founder and CEO of B2U Storage Solutions, to learn more about this groundbreaking project.

The Cuyama hybrid system: Combining solar power and energy storage

The Cuyama hybrid system, located in New Cuyama, Santa Barbara County, CA, is a solar power and energy storage installation that utilizes second-life EV batteries. The initial commercial operation of the system has a storage capacity of 6 MWh, which is expected to expand to 12 MWh by the end of the year. The system consists of 1.56 MW of photovoltaic (PV) generation and is supplemented with grid charging as needed. The interconnection capacity of the system is 3.0 MW.

Sourcing batteries from Honda Clarity BEV

When it comes to sourcing the batteries for their projects, B2U Storage Solutions collaborates directly with original equipment manufacturers (OEMs). For the Cuyama project, they worked with Honda to source the batteries from the Honda Clarity BEV. This partnership enables B2U to acquire the necessary batteries for their energy storage installations.

The process of working with second-life batteries

B2U Storage Solutions utilizes their EPS (Energy Power System) technology to deploy EV batteries in their original pack casing, utilizing the pack’s native battery management system (BMS) software. This eliminates the need for costly repurposing. In the case of the Cuyama project, each battery cabinet contains 24 Honda Clarity EV batteries. The cabinets are assembled and tested at B2U’s hub in Lancaster, CA, before being shipped to the project site.

Certification and safety considerations

To ensure the safety and compliance of their energy storage systems, B2U Storage Solutions undergoes the necessary testing and certification processes. The permitting authorities require energy storage systems to achieve UL (Underwriters Laboratories) certification. B2U performs all the required testing to achieve UL9540 certification, which is specific to energy storage systems.

The cost and benefits of second-life EV batteries

While there is currently no established market price for selling used EV batteries, B2U Storage Solutions recognizes the substantial value in reusing these batteries for large-scale stationary storage projects. As a result, they are willing to pay a significant premium over the recycling value. This approach not only extends the life of the batteries but also reduces the overall cost of energy storage systems. B2U deploys energy storage systems for about half the cost of new systems.

Expanding the scope of second-life batteries

B2U Storage Solutions has successfully deployed batteries from various EV manufacturers, including Nissan, Chevy, Tesla, and Ford, which represent over 80% of today’s EV market. They are also working with Volvo, BYD, and other OEMs to deploy additional battery types as they continue to expand their energy storage capabilities.

Conclusion:

The successful deployment of the Cuyama hybrid system using second-life EV batteries is a testament to the potential of repurposing these batteries for stationary energy storage. B2U Storage Solutions has demonstrated that EV batteries can have a second life, extending their usefulness and reducing waste. With their EPS technology and partnerships with OEMs, they are paving the way for a more sustainable and cost-effective approach to energy storage. As the demand for renewable energy and EVs continues to grow, the utilization of second-life EV batteries in energy storage projects could play a crucial role in creating a more sustainable and efficient energy system.