On October 2, 2026, JHOTAS-LAB published Can Battery Storage Reduce Data Center Grid Costs? What BESS Can—and Cannot—Do, focusing on where BESS can help large-load projects and where it cannot.
This follow-up tracks Fluence Energy (NASDAQ: FLNC) as one company trying to turn that data-center storage demand into actual orders and revenue. The point is not to treat every hyperscaler award as a stock catalyst, but to observe whether the business converts from pipeline to delivery.
That makes Fluence especially useful to watch because the company already has meaningful data-center-related awards while also dealing with manufacturing and project-execution delays.
Why Data Centers Are Becoming a Real Fluence Customer Segment
Fluence reported approximately $850 million of data-center business secured through July 2026.
That total included the company’s first large behind-the-meter order and roughly $550 million of awards from a hyperscaler in July.
Behind-the-meter storage is especially relevant for data centers because it can sit close to the load and support peak management, backup strategies, interconnection constraints and energy optimization.
BESS does not replace the need for a strong grid connection or emergency generation. But it can become one layer in a broader power system built around reliability and flexibility.
Smartstack Is Designed for High-Density Storage
Fluence introduced a 10 MWh version of its Smartstack platform in June 2026.
The company says the system is designed to increase storage capacity without expanding the basic footprint, with site-level energy density of roughly 680 MWh per acre.
That characteristic matters for data-center campuses because land, interconnection space and electrical-room planning can all be constrained.
A dense standardized platform can also reduce the amount of project-specific engineering required when storage is deployed at scale.
Fluence combines the hardware with controls, services and optimization software, so its role is closer to a system integrator than a battery-cell manufacturer.
The Orders Are Strong, but Manufacturing Has Become the Test
Fluence’s third-quarter 2026 results showed strong demand. Order intake exceeded $1.44 billion and contracted backlog reached about $6.4 billion, a company record.
The company also reported 45.6 GW / 163.7 GWh in its energy-storage project pipeline.
But strong demand has not translated smoothly into current-year financial performance.
Production delays at new manufacturing facilities and construction delays pushed approximately $400 million of expected project deliveries into fiscal 2027.
Fluence subsequently reduced fiscal 2026 revenue guidance to about $2.4 billion and adjusted EBITDA guidance to a loss of about $200 million.
This is exactly why the data-center opportunity needs to be evaluated through execution, not just the size of the pipeline.
👉 For the broader company update, see Fluence Energy BESS: What the U.S. Storage Boom Looks Like Inside FLNC.
How the Market Has Reacted Since Then
FLNC closed at about $7.61 on October 2, the publication date of JHOTAS-LAB’s data-center BESS article. By October 7, the stock was trading near $7.5, leaving the price broadly flat to slightly lower over the short period.
The more important move happened in September, when the stock sold off sharply after Fluence cut its fiscal 2026 guidance.
That contrast matters. The market appears to care about the data-center opportunity, but near-term execution, manufacturing delays and profitability remain more immediate financial variables.
The chart therefore shows why a strong end-market narrative does not automatically override company-specific operating problems.
Business Reality: $850 Million of Data-Center Business Is Meaningful, but Not Yet the Whole Story
The data-center order figure is important because it shows that hyperscalers and large-load customers are becoming a measurable part of Fluence’s business.
But awards and backlog are not the same as recognized revenue or profit.
Projects must be manufactured, delivered, installed and accepted before they fully contribute to financial results. Margins also depend on battery costs, contract terms, logistics and project execution.
Fluence’s current challenge is therefore unusually clear: demand is visible, but the company must prove that its manufacturing and delivery system can convert that demand into revenue and cash flow.
This is the checkpoint we will carry into the next follow-up. We are not trying to predict the next stock move; we are watching whether the business milestones below actually happen.
What to Watch Next
Watch whether the $850 million data-center business moves into recognized revenue on schedule and whether Fluence announces additional hyperscaler or behind-the-meter orders.
The second key item is the ramp of the Houston contract manufacturing facility and the recovery of delayed fiscal 2026 deliveries in fiscal 2027.
Also watch Smartstack adoption, gross margin recovery, backlog conversion and whether data-center customers become a larger disclosed share of total orders.
👉 For the U.S. storage market itself, see Why Is Battery Energy Storage Growing So Fast in the U.S.?.
Sources & Official References
Fluence — Third-quarter 2026 results
Fluence — Smartstack 10 MWh announcement
Fluence — Revised fiscal 2026 guidance
StockAnalysis — FLNC historical price data
About the author
I have practical experience in electrical construction and electrical project coordination in South Korea. For U.S.-focused guides, I research official codes, government data, utility documents, and manufacturer specifications to explain electrical and energy topics as accurately and practically as possible.
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