Eos & WATTMORE: How Integrated Systems Are Unlocking Energy Storage

DENVER and PITTSBURGH – August 24, 2026 – In the world of large-scale energy storage, a project's success has long been a complex equation of separate parts: the battery, the power controls, and the management software. Getting these disparate elements to communicate and operate seamlessly is a persistent and costly challenge for developers. A new strategic collaboration between zinc battery manufacturer Eos Energy Enterprises and software specialist WATTMORE aims to solve that equation by delivering a pre-integrated system, signaling a critical shift from selling components to providing holistic solutions.

Eos and WATTMORE announced a non-exclusive agreement to combine WATTMORE's Intellect Operate™ control platform with Eos's Z3™ long-duration battery systems. For an industry grappling with project complexity and supply chain hurdles, this move is more than a simple partnership; it's a direct response to customer demand for simplification and a blueprint for accelerating the deployment of the long-duration storage needed to modernize the American grid.

The Integration Imperative

At the heart of any modern energy storage facility is a layered stack of technology. At the base, you have the battery itself—in this case, Eos's Z3 zinc-based system, designed for long-duration applications of four hours or more. Managing the health and performance of these batteries is Eos’s proprietary DawnOS™ platform, which handles battery-level monitoring and optimization.

But a battery, no matter how advanced, is an inert asset without a brain to tell it what to do. This is where the higher-level control systems come in, and traditionally, where integration headaches begin. A typical project requires stitching together an Energy Management System (EMS) for economic dispatch, a Power Plant Controller (PPC) to interface with the grid, and a SCADA system for overall monitoring. These are often sourced from different vendors, leading to interoperability issues, lengthy commissioning times, and potential performance gaps.

WATTMORE's Intellect Operate platform is designed to collapse this stack. It unifies the EMS, PPC, and SCADA functions into a single, cohesive software environment. This allows a system to simultaneously optimize for revenue (e.g., energy arbitrage) while responding to grid operator commands in sub-second timeframes—a crucial capability for participating in lucrative grid services markets. By pre-integrating this unified control system with Eos's hardware and its native DawnOS, the partnership aims to create a repeatable, scalable model that removes a significant layer of technical risk for developers.

"Energy storage systems depend on battery technology, controls, and software working together as a single operating environment," said Jonathan W. Postal (JW), WATTMORE's Founder and CEO. "Our collaboration with Eos brings together complementary capabilities across those layers, creating a stronger foundation for customers."

From Silos to Solutions

The practical benefit for customers is a streamlined path from project design to deployment. Instead of acting as the system integrator themselves, a developer can procure a solution where the most complex communication links have already been engineered and tested. This "plug-and-play" approach is a significant step toward commoditizing and scaling large-scale storage.

"Customers are looking for integrated solutions that reduce complexity and simplify deployment," noted Nathan Kroeker, Chief Commercial Officer of Eos. He emphasized that while Eos technology can interface with various control systems, the work with WATTMORE provides a powerful new option that strengthens their ability to deliver complete solutions.

This isn't a theoretical exercise. The two companies have already proven the concept in the field. Their most recent collaboration was a 3 MW / 12 MWh project for the Lincoln Electric System in Nebraska. That utility-scale installation served as a real-world test bed, combining Eos's Z3 batteries with WATTMORE's controls to enhance grid reliability. The success of that project validated the integrated approach and laid the groundwork for this broader strategic agreement.

A Domestic Power Play

The partnership also carries significant strategic weight in the context of U.S. energy independence and supply chain security. Eos has built its brand on its American-made Znyth™ aqueous zinc battery technology, which uses readily available, non-precious earth materials and avoids the fire risk associated with lithium-ion chemistries. With manufacturing based in the U.S., Eos helps insulate projects from geopolitical supply chain volatility.

Pairing this with WATTMORE's Denver-based engineering and a platform designed to use FEOC- and BABA-compliant hardware reinforces the domestic-first narrative. For developers and utilities looking to leverage federal incentives tied to domestic content and secure infrastructure, this all-American technology stack presents a compelling advantage. It's a tangible example of how U.S. innovation in both hardware and software can be combined to build a more resilient domestic energy infrastructure.

Unlocking the Long-Duration Market

This move toward integrated systems is happening at a critical moment for the energy grid. The rapid growth of intermittent renewables like solar and wind requires a corresponding increase in long-duration energy storage—assets that can absorb excess generation and discharge it for many hours to cover evening peaks or lulls in generation. Eos's technology, designed for 4- to 16-hour durations, is squarely aimed at this need.

However, the market for LDES can only scale if projects are economically viable and technically straightforward to deploy. By reducing complexity, the Eos-WATTMORE partnership directly lowers the barriers to entry for utilities, microgrid operators, and large industrial customers, including data centers, that require reliable, long-lasting power. As our grid becomes more complex, the value is no longer just in the battery itself, but in the intelligence that controls it. This collaboration demonstrates a mature understanding that execution, not just innovation, is what will ultimately power the energy transition.