Fluence Energy (FLNC) shares shot up more than 51% on Monday after Siemens AG (SMAWF) and NVIDIA Corp. (NVDA) announced a partnership to build specialized AI data center infrastructure. The stock hit $28.47, and the move was driven by a joint announcement that positions Fluence's battery storage technology as a critical piece of the puzzle.

The NVIDIA Vera Rubin Reference Design

Siemens said the companies developed a reference design aligned with NVIDIA's Vera Rubin platform. The architecture translates NVIDIA's AI factory vision into a deployable, industrialized electrical, power, and controls solution aimed at hyperscalers and specialized cloud infrastructure providers. The system is sized at a total facility capacity of 136 MW with an IT load of 100 MW.

Fluence Smartstack Provides Grid Resilience

As part of the blueprint, Fluence's battery energy storage delivers the flexibility and resilience needed for power-constrained environments. "Our Smartstack platform is central to this new architecture, transforming the grid into an accelerator for compute," said Jeff Monday, Fluence Chief Growth Officer. "By providing essential capabilities like voltage and frequency ride through, black start, grid demand response, and AI load smoothing, we are enabling our customers to build the AI factories of the future, faster and more reliably."

Addressing Extreme Thermal Management

The design also incorporates electrical parameters aligned with nVent Electric plc (NVT) to ensure compatibility with heavy NVIDIA workloads. "Platforms like NVIDIA Vera Rubin NVL72 are pushing rack densities well beyond what traditional air-cooled infrastructure can support," noted Sara Zawoyski, President of nVent Systems Protection, highlighting the need for deployable thermal solutions.

Technical Analysis

FLNC is trading well above its major trend gauges, sitting 45.9% above the 20-day SMA ($19.25) and 66.5% above the 200-day SMA ($16.87). That underscores how aggressive this upswing has become. However, the longer-term trend still carries some baggage: the 50-day SMA remains below the 200-day SMA (a death cross that formed in April), even as the 20-day SMA is above the 50-day SMA (a bullish near-term alignment). RSI is the cleaner momentum read right now, and at 51.18, it's neutral.

FLNC Price Action: Fluence Energy shares were up 50.79% at $28.47 at the time of publication on Monday.