Energy storage needs to go where power demand is growing fastest. Data centers, urban substations, military installations, and commercial campuses all present new constraints on space, labor, deployment, and infrastructure. The assumptions built into conventional systems don’t transfer easily to these environments. That’s the challenge behind Eos Indensity™. Our latest white paper explores how Eos reimagined energy storage architecture from the ground up, moving beyond the traditional “big box” BESS model toward a modular, stackable, high-density system designed around the real-world constraints of space, speed, constructability, reliability, and resilience. The paper breaks down three generations of compounding insight that led to what the Indensity architecture delivers: a complete plant-level energy storage solution for places it hasn’t been practical before. Read the full white paper: eose.com/insight/eos-indensi…

Great projects aren't built overnight. They take vision, planning, sourcing, and strong partnerships to turn an idea into reality. In this recent @Forbes article, Eos CEO Joe Mastrangelo and MN8 CEO Jon Yoder provide a behind-the-scenes look at what it takes to develop and launch a first-of-its-kind project like this one. Read the article here: forbes.com/sites/alanohnsman…

We're excited to be a part of @Google's mission, alongside MN8 Energy, to accelerate LDES technology commercialization with the aim to rapidly bring reliable, affordable electricity to communities everywhere. Missed the announcement about how we’re doing it? Read more in Google’s blog here: blog.google/innovation-and-a…

Today, Eos, @Google and MN8 Energy announced an advanced clean energy project in West Virginia that will add new energy and capacity to the PJM grid. The project brings together an integrated solar and storage portfolio operating as one dispatchable resource. Eos’ American-made Z3™ technology provides the long-duration layer, extending the availability of solar generation and supporting grid reliability. This collaboration is about more than a project. It's about putting the right technologies to work against a real grid need, strengthening communities, and meeting growing energy demand. Together, we're moving American-made long-duration storage into project execution. Read more here: investors.eose.com/news-rele…

On July 15th, 2026, Eos was selected for Golden Dome for America, the initiative safeguarding our nation. American-made energy storage, designed with American ingenuity, built with American determination for the missions where power cannot fail. From the factory floors of Pennsylvania to the front lines of national security, Eos is powering a stronger, more secure, independent America. Eos. American energy. Unstoppable.

America’s defense runs on power that cannot fail. At @SenMcCormickPA's Defense and Innovation Summit, @POTUS announced Eos has been awarded a Golden Dome for America contract, stating "Eos in Pittsburgh just agreed to a multi-million dollar partnership with the Department of War to build energy storage technology in support of our Golden Dome missile defense." This strategic partnership with the Department of War strengthens the energy backbone of America's defense and is structured to scale as national defense needs evolve. Read the full press release: investors.eose.com/news-rele…

Attention Stockholders: DTC distributed the rights to banks and brokerage firms on Thursday. If you hold your shares through a brokerage account, your rights may not appear immediately. Given the holiday weekend, some brokers may still be completing their internal processing before rights are credited to client accounts and notifications are sent. If you do not yet see your rights in your account, please allow additional time for your broker's processing procedures, as timing may vary among financial institutions. If you have specific questions regarding your rights distribution, please contact Sodali & Co., the Company’s information agent for the rights offering, at (203) 658-9400 (For Banks and Brokers), (833) 225-0490 (Toll Free), or by email at EOSE.info@investor.sodali.com. See eosrightsoffering.com/ for shareholder resources regarding the rights offering. DISCLAIMER: please read the disclaimer at eosrightsoffering.com/discla… for important information.

Today, Eos announced the commencement of its rights offering. The offering is intended to raise equity capital to fund Eos’ planned investment in Frontier Power USA, as described in the Company’s public filings. Rights offering information: eosrightsoffering.com/ Read more: globenewswire.com/news-relea… Disclaimer: eosrightsoffering.com/discla…

Eos CEO, Joe Mastrangelo, will join Mark Strouse for a Fireside Chat at the J.P. Morgan Natural Resources Conference today at 9:10am ET! Join the live webcast here: jpmorgan.metameetings.net/ev…

The first Eos Cube built entirely with batteries from Battery Line 2 has shipped. The batteries were produced at our Thorn Hill manufacturing facility, where we moved from Site Acceptance Testing into commercial production in four days. The Cube was assembled at our Turtle Creek facility. Two battery lines are now running. Line 1 surpassed its full-year 2025 output in 164 days. Line 2 is launched and delivering. This is scale meeting execution on the path to 4 GWh of American-made annual capacity.

Attention Eos Shareholders! Proxy voting is now open through June 2 and the Board of Directors recommends voting FOR all five proposals! Vote using the instruction form provided by your broker and visit proxyvote.com to have your voice heard. For information on the five proposals to be voted on at the annual meeting, visit the Annual Reports & Proxy Statements page of the Eos IR website: investors.eose.com/financial… For information on how to vote, visit the Annual Meeting Resources section of the IR Resources page of the Eos IR website: investors.eose.com Every vote matters, and your voice adds real weight.

Everyone is counting megawatt additions to power AI. The real constraint is millisecond reaction to demand fluctuations. Most storage wasn’t built for that. We tested it. We validated it. Millisecond response. Sustained rapid cycling. No measurable degradation. This is not storage adapted for AI. It’s storage engineered for the realities AI inference creates. Full technical breakdown: eose.com/ai-inferencehow-the…

Stop waiting. Start powering. Power is on the critical path. Capacity is needed in months, not years. To keep up with accelerating AI demand, Eos and TURBINE-X have partnered to deliver a new model of infrastructure designed specifically for constrained, high-load environments. At @DataCenterWorld today, both the Eos and TURBINE-X teams are on the floor ready to talk directly about this partnership and what it unlocks for hyperscale operators. Accelerated timelines. High density, compact footprint. Millisecond-class storage response. Integrated gas-fired generation with Eos Indensity™ storage architecture is the fastest path to future-proof, reliable power for hyperscale data centers. #DataCenterWorld

Imbalance doesn’t have to cascade. When a single module falls out of balance, DawnOS™ isolates it and routes around the issue. Keeping the string online with less than 1% impact. Most modules recover on their own and are automatically reintegrated. No technician. No restart. No downtime. That’s how more installed capacity becomes usable capacity, and why the economics of storage change when imbalance is contained at the source. Read the DawnOS paper: eose.com/how-eos-redefined-c…

In most storage systems, installed capacity ≠ usable capacity. Energy gets stranded because controls are designed around the weakest module—so systems are oversized to compensate. By managing imbalance at the module level, DawnOS™ allows Eos systems to deliver virtually all installed energy and stay operational. The result: More delivered energy. More predictable performance. More value from the same infrastructure. Our technical paper breaks down how this shift changes real‑world system economics. Read the DawnOS paper: eose.com/how-eos-redefined-c…

To meet accelerating AI demand, infrastructure has to move faster—and at scale. Eos has entered a Joint Development Agreement with TURBINE‑X to develop private power infrastructure for AI. By integrating gas‑fired generation with Eos Indensity™ storage architecture, this model is designed to provide dispatchable, on‑site power in months, not years, aligned with AI deployment timelines. Read the full announcement here: investors.eose.com/news-rele…

Our 2025 Annual Report and Shareholder Letter is available now. Hear directly from our CEO, Joe Mastrangelo, and read the full report here: investors.eose.com/static-fi…