Canadian Solar Inc. has announced that e-STORAGE, a division of its majority-owned subsidiary CSI Solar Co., Ltd., has secured Battery Supply Agreements and Long-Term Service Agreements (LTSA) for two major battery energy storage projects in the United States.
These projects are being developed by Aypa Power, a company focused on advancing energy storage and hybrid renewable energy solutions.
Apya Power - BESS Projects Details
Aypa Power specializes in the development, ownership, and operation of utility-scale energy storage systems. The company is committed to reducing reliance on fossil fuels and improving grid reliability while supporting the transition to renewable energy.
Since launching its first energy storage project in 2018, Aypa Power has expanded its portfolio to over 22 GW of projects in development, with 33 projects currently under construction or in operation across North America.
The new BESS projects and Contract Details
The agreements cover the supply and commissioning of two large-scale Battery Energy Storage Systems (BESS):
A 160 MW AC / 806 MWh DC BESS in California.
A 200 MW AC / 998 MWh DC BESS in Texas.
These projects will incorporate approximately 370 SolBank 3.0 units, with construction scheduled to begin in Q3 2025. Following testing and commissioning, it is understood that e-STORAGE will manage system maintenance and operations under a 20-year LTSA, ensuring optimal long-term performance.

SolBank 3.0 - BESS Details
SolBank 3.0 is a containerized energy storage solution designed for high performance and safety. It features:
High Energy Density: Achieves over 5 MWh nominal capacity within a 20-ft container, utilizing 314 Ah battery cells for a 45% increase in capacity.
Optimized Modular Design: A scalable solution suitable for various project sizes and applications, ensuring longevity and efficiency throughout its lifecycle.
Advanced Safety Design: IP67-rated battery pack design to protect against dust, humidity, and water condensation, with multi-stage BMS monitoring and fire alarm systems for enhanced safety.
Installation and Service Efficiency: One-way door opening for flexible configurations, pre-installed and tested battery packs to reduce on-site installation costs.
Further info about SolBank 3.0 is detailed in the video below (courtesy of csestorage.com)
E-storage Leadership Comments on the Project
Colin Parkin, President of e-STORAGE, emphasized the significance of these projects, stating:
“We are proud to support Aypa Power in delivering utility-scale energy storage projects that will play a pivotal role in enhancing grid flexibility and reliability. Our SolBank technology is designed to provide safe, high-performance energy storage solutions that meet the growing demands of the market. These projects highlight the increasing role of battery storage in stabilizing renewable energy supply, and we remain committed to driving innovation and delivering high-quality solutions that support a cleaner, more sustainable energy future.”
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