Are Cascade batteries a cost barrier in energy storage?

This study explores technological and policy-driven innovations to mitigate the cost barrier of cascade batteries in energy storage, leveraging national support and optimized recycling. It presents strategies to enhance economic and operational viability for the secondary use of retired batteries.

How does a cascade energy storage system work?

The cascade energy storage system serves the load with power when fully charged and draws electricity from the main power grid when its charge is inadequate. Furthermore, should the energy storage battery remain uncharged, the primary power grid concurrently powers both the load and the cascade energy storage system.

How long does a cascade energy storage system last?

4.2.2. Model solution and analysis Assuming an initial available capacity of 80 % for retired batteries, with cascade utilization ceasing when the remaining capacity reaches 60 %, it is determined that the operational lifespan of the cascade energy storage system is 7 years.

Can cascade utilization extend battery service life?

Detailed cost, revenue, and policy subsidy analyses demonstrate that cascade utilization can extend battery service life by 7 years from an initial 80 % state of charge (SOC) and reduce energy storage system costs.

Why should we use Cascade batteries?

The utilization of cascade batteries can significantly reduce resource wastage, decrease environmental degradation, alleviate the pressure on the recycling and disposal of spent batteries, and foster the green development of the electric vehicle industry .

Do Cascade batteries improve economic and operational viability?

It presents strategies to enhance economic and operational viability for the secondary use of retired batteries. Based on the research presented in Fig. 11, Fig. 12, the results demonstrate that as the unit cost of cascade batteries progressively decreases, the system's net revenue exhibits a pronounced positive growth trend.