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Battery energy storage system design, construction, & BESS commissioning support to help reduce schedule & execution risk and achieve project goals.

Are you looking to limit unforeseen costs and schedule delays for your BESS projects? Could you benefit from additional help during the BESS design process, including partner engineering support for proper BESS integration, oversight of product documentation and commissioning plans, and proactive identification and resolution of issues across project stakeholders? 

Anza offers a wide range of energy storage project services, design support, BESS commissioning support, and commissioning management to help clients achieve superior results. Whether your team has limited resources to manage project execution or you are looking to derisk energy storage system design and commissioning, our experts serve as your partners every step of the way. Explore the scope of energy storage technical services available from Anza to support your next project.

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Solved BESS integration challenges leading to top 5 rank for CAISO availability

After our client called in Anza’s team to resolve a variety of controls and operational issues on a 100 MW, 4 hour system, performance exceeded customer expectations in earnings and availability. The project was recognized among the top five most available BESS under CAISO control in Q2 2025.

Achieved ERCOT commissioning while addressing changing customer priorities

Anza helped bring a 220 MW, 2 hour utility-scale site from hot commissioning through ERCOT-required BESS testing by aligning Qualified Scheduling Entity, Energy Management System (EMS) provider, PCS provider, battery manufacturer, and owner.

Telemetry and market readiness

Anza’s expertise enabled market participation by efficiently coordinating telemetry configuration and troubleshooting across stakeholders, efficiently completing ERCOT commissioning steps and market tests.

De-risked first-of-a-kind products during FAT

Anza supported Factory Acceptance Testing (FAT) for a new BESS product to be paired with a new PCS to catch issues early and reduce integration risk before site deployment.

BESS Project Schedule Support

Anza’s expert team will review & adjust sequencing and activities and give advice on representation of pre-commissioning activities and BESS testing as project execution begins. Increase the accuracy of your schedule with detailed tracking of EPC & vendor progress – including developing a coordinated project schedule for construction & commissioning – and receive estimated project trajectory graphs to easily determine if your project is on time.

Documentation Control & UL 9540 Field Evaluation Support

From technical specifications, installation, and user manuals to BESS drawing packages, engineering studies, materials for UL 9540 field evaluations, BESS certification/testing reports, and maintenance guides, managing product documentation is crucial for energy storage project success. Our team will proactively ensure all documents are accurate, up-to-date, and accessible to relevant stakeholders to keep your project on schedule and ensure compliance with industry standards. We’ll also help facilitate UL 9540 field evaluations and work to provide relevant project documentation and assist with resolving any questions or issues.

BESS Design & Testing Support

Validate that all project equipment in your BESS design is compatible with a detailed report from Anza flagging any concerns and recommendations regarding DC voltage, cable quantity and size, DC overcurrent, DC short circuit, low voltage ride-through, and communications. Anza’s energy storage engineers will also review test procedures and results, including Factory Integration Tests (FIT) and Factory Acceptance Tests (FAT), and the project drawing set to provide detailed recommendations to enhance overall system performance. This review process can help prevent potential problems at the commissioning stage by catching problems early, setting the groundwork for successful project execution.

Product Installation RFI Support & OEM Parameter Review

Receive robust support for Request for Information (RFI) processes related to energy storage system product installation, minimizing the risk of errors and ensuring that the project progresses smoothly. Our team will review OEM-provided parameters and settings for the BESS, Power Conversion System (PCS), and battery Energy Management System (EMS) and provide recommendations for parameter and setting changes to best suit your project.

BESS Commissioning Support

Receive a comprehensive commissioning plan and thorough review of contractual commissioning requirements to ensure handoffs between parties are clearly defined and carefully planned ahead of time. Our team will validate that all necessary aspects of BESS, PCS, and EMS commissioning are well-represented and meet with all parties involved to further understand their commissioning requirements. Anza will also ensure all EMS/DAS data is configured correctly and meets ISO/utility standards. Anza will visit the project site to document findings and facilitate a successful commissioning process across all stakeholders.

BESS Commissioning Management

Utilizing our experience and tools we’ve developed to assist with commissioning over 70 energy storage projects, our team will provide detailed tracking of project issues, unit progress, logistics, battery warranties, and log all major faults that occurred on battery energy storage system and Power Conversion System (PCS) equipment. Our team will work closely with all parties involved to prepare for commissioning, identifying and tracking resource plans, tactical schedules, scope ambiguities, and key risks to streamline the commissioning process.