Eos and WATTMORE Integrate Controls for Long-Duration Battery Storage Projects

Eos Energy Enterprises and WATTMORE announced on August 24 that they will integrate WATTMORE’s energy-management, power-plant-control and SCADA platform with Eos Z3 long-duration battery systems for selected customer projects in the United States. The Eos WATTMORE battery storage agreement creates a pre-integrated controls option intended to reduce deployment complexity across utility, microgrid, data-center and commercial energy-storage applications.

Under the non-exclusive agreement, Eos has committed to deploy WATTMORE’s Intellect Operate Energy Management System and Power Plant Controller on selected projects while supporting integration with Eos’ DawnOS battery-management platform and Z3 storage technology. The companies have already used the technologies together on a 3 MW/12 MWh project for Nebraska utility Lincoln Electric System.

The agreement connects battery-level and plant-level controls

WATTMORE and Eos announced the collaboration on August 24, describing it as a non-exclusive software-and-hardware integration agreement.

The two control layers perform different functions. Eos’ DawnOS manages monitoring, control and optimization at the Z3 battery level, while WATTMORE’s Intellect Operate platform manages functions including system dispatch, energy optimization and interaction with the electric grid.

Integrating those layers before project deployment is intended to provide customers with a repeatable controls architecture rather than requiring each project team to build the connection between battery hardware and plant-level controls from the beginning.

DawnOS was designed specifically around Eos’ zinc battery chemistry

Eos’ Z3 systems use zinc-based battery chemistry rather than the lithium-ion cells that dominate much of today’s stationary battery market.

Eos launched DawnOS in 2025 as a battery-management, software, controls and analytics platform developed specifically for the operating characteristics of its Z3 systems.

The platform tracks state of charge, state of health and available energy while coordinating battery modules. Eos says the architecture is intended to improve system balancing, automate operations and provide operators with more precise information for grid dispatch.

WATTMORE’s platform operates above that battery-management layer, adding plant-level dispatch and optimization. The Eos WATTMORE battery storage collaboration is therefore aimed at connecting controls from the individual battery system through the overall power plant.

A Nebraska project provided an earlier integration test

The companies have already worked together on a 3 MW/12 MWh battery project associated with Lincoln Electric System in Nebraska.

WATTMORE previously described its role in the Lincoln project as supplying its Intellect Operate energy-management and optimization platform for the four-hour storage system.

Lincoln Electric System board records document a 3 MW, four-hour Eos zinc battery project and an amended power-purchase agreement that put the project back into development after an earlier financing delay.

The companies cite that installation as evidence that the combined Eos and WATTMORE architecture can operate at multi-megawatt scale. The new agreement is broader because it creates a framework for using the integration on additional selected Eos projects rather than one named installation.

Controls are becoming a larger part of battery project integration

Battery storage projects require multiple layers of software and controls to coordinate individual battery modules, inverters, plant operating limits, grid signals and market or customer dispatch requirements.

Those interfaces become especially important for long-duration systems that may be expected to perform different functions over multi-hour operating periods.

Eos markets Z3 for applications including utility storage, microgrids, commercial and industrial sites and data centers. WATTMORE develops controls for storage, solar, microgrids and virtual power plants.

The new agreement does not make WATTMORE the exclusive controls provider for Eos. Eos says its systems can interface with multiple energy-management platforms and that Intellect Operate will become another option for customers.

The companies are targeting several fast-growing power applications

The agreement is notable because Eos specifically identified utilities, data centers, microgrids and other large-scale applications as areas where its project pipeline is growing.

Each presents different operating requirements. Utility batteries may respond to grid or market signals, microgrid systems may coordinate storage with local generation and critical loads, and data-center installations can use storage for backup power, demand management or grid-support functions.

A common controls architecture does not eliminate those project-specific requirements, but pre-integrating the battery-management and plant-control layers could reduce one source of engineering work when systems move from design into commissioning.

What happens next

Eos and WATTMORE have not identified which upcoming customer projects will first use the newly formalized integration.

The agreement commits Eos to deploy Intellect Operate EMS and PPC technology on selected projects and support integration with DawnOS and Z3, but it does not establish a minimum project capacity, contract value or deployment schedule.

The next meaningful evidence will come from named projects using the integrated architecture and from operating data showing whether the pre-integrated approach reduces commissioning complexity while maintaining the performance required for long-duration storage.

Microgrid Media Editorial Desk

The Microgrid Media Editorial Desk reports on microgrids, energy storage, grid modernization, data center power demand, distributed energy resources, and energy policy. Reporting published under the Editorial Desk byline is developed from primary regulatory records, utility filings, government documents, company disclosures, and independently verifiable sources, and is reviewed under Microgrid Media’s editorial standards.

Editorial oversight: Jonas Muthoni, Editor-in-Chief