Fluence Energy shares rose after Siemens and Nvidia released an AI power plan that centers batteries in the data-center rollout.
NEW YORK, June 1, 2026, 10:04 EDT
- Fluence shares surged around 31% in early Nasdaq trade. The move came after Siemens included the company in an NVIDIA-linked AI data center power setup.
- The reference design targets a 136-megawatt facility and supports a 100-megawatt IT load.
- Fluence’s rally follows a May update where it posted a record $5.6 billion backlog and said it has two supply agreements with hyperscalers.
Fluence Energy shares jumped in early Monday trading after Siemens named Fluence and NVIDIA as partners on a new reference architecture for AI data centers. The plan would put Fluence’s battery storage inside the suggested power setup for big computing sites.
The stock jumped 31% to $24.80, after hitting $26.21 earlier. Shares closed at $18.88 before the move. That easily beat the Invesco QQQ Trust, which tracks the Nasdaq-100 and was up around 0.2%. NVIDIA gained 3.9%. nVent, which was also named as a partner in the Siemens design, rose 1.9%.
AI’s expansion is becoming more about power than chips, and Siemens said its new design targets hyperscalers, colocation players, and cloud infrastructure firms pushing to spin up high-density AI sites faster. The company said the focus is on very large cloud and data-center operators as well as niche infrastructure providers.
Siemens is working with NVIDIA’s DSX Vera Rubin NVL72 AI factory reference design. The setup has 136 megawatts total capacity, with 100 megawatts for IT. The layout follows the electrical path from a 34.5-kilovolt utility hookup through distribution to the rack level.
Fluence is set to provide battery energy storage systems, or BESS, that let utilities store power and deliver it later to balance the grid or help with demand changes. Data Center Dynamics said Fluence’s Smartstack would be used to handle voltage and frequency shifts, give black-start support, and respond to uneven AI power loads.
Fluence chief growth officer Jeff Monday said in the Siemens release that Smartstack is “central to this new architecture” and will help customers set up AI factories “faster and more reliably.” Siemens Press
Fluence was already under review after its May earnings. For the second quarter, the company posted $464.9 million in revenue, up 7.7%. Net loss narrowed to $29.2 million from $41.9 million the previous year. Adjusted EBITDA stayed negative at minus $9.4 million, but that was an improvement.
Traders focused on the order book. Fluence reported order intake had jumped to about $2.0 billion year-to-date through May 6. The company also said it signed master supply agreements with two major hyperscalers and backlog hit a record $5.6 billion by March 31. Master supply agreements are framework deals that set terms but don’t confirm final volume.
Fluence CEO Julian Nebreda said at the time the company was seeing “an acceleration of orders” and that customer expansion was “gaining momentum.” Nebreda also said Fluence expected its first hyperscaler order to convert soon. GlobeNewswire
Analysts are focused on the same issue. Jefferies analyst Julien Dumoulin-Smith told Utility Dive the hyperscaler deals happened sooner than he thought and called them “significant progress” for Fluence’s data-center strategy. He added that these agreements might make up a big part of Fluence’s about 12 GWh pipeline, but no customer names were disclosed. Utility Dive
Nextpower is making moves in the sector. The company said May 28 it will buy Prevalon Energy for up to $365 million, aiming at battery storage and AI data-center power projects. Prevalon reports over 6 GWh of deployed BESS units and 1.3 GW of firm supply contracts focused on AI and hyperscaler workloads. Nextpower shares dropped around 6.3% early Monday after a rally on Friday following the deal. Bloom Energy, another player in the data-center power space, slipped about 3.0%.
Monday’s move could be pricing in demand that isn’t firm yet. A reference architecture stops short of a purchase order, and Fluence needs to convert these design wins and agreements into booked business, shipping and real margin. Fluence remains in the red. Revenue in the May results fell short of some market estimates, although backlog climbed.
Right now, investors want proof that Fluence can stop being just another volatile clean-energy play and show it belongs in the AI infrastructure supply chain. That story is simpler than what the sector faced last year, but the expectations are tougher.
