Fluence cuts 2026 guidance to 2,400 million on Houston plant delays

On September 16, 2026, Fluence Energy cut its fiscal 2026 revenue guidance to about 2,400 million dollars, from 3,000 million, and anticipated losses of 200 million. The cause is the start-up of its contracted manufacturing plant in Houston, which is not yet connected to the electric grid.

The plant, operated with manufacturer Bergstrom, was supposed to produce 15 gigawatt-hours (GWh) per year of climate-control equipment for the Gridstack Pro battery containers. Chief executive Julian Nebreda told investors that the company underestimated the complexity of the ramp-up: the automated welding process runs below its target and production averaged less than one unit per day in August, against the 11 planned, before rising to three per day in September. Fluence has accrued close to 56 million dollars in penalties for late deliveries, according to Latitude Media, and Barron's reported that the cut fueled analyst doubts about its production capacity. For the regional market, the episode exposes two cross-border bottlenecks: manufacturing concentrated in a few nodes and interconnection queues, the same obstacle facing utility-scale storage projects in North America.

The business exposed here is data centers, which add batteries to their on-site power: Fluence reported a project portfolio of 16 GWh in the third fiscal quarter, 35% more than the previous quarter, with a 300 million dollar order and another 550 million in bidding with a hyperscaler. Its firm order backlog reached a record 6,400 million dollars, with 2,200 million scheduled for delivery in 2027. Analysts at Jeffries see room to resolve the manufacturing problems, but warned that customer confidence in delivery timelines is critical as competitors release product. Nebreda said the delays affect those customers, who move from prospect to contract in under three months against roughly 18 months for the rest of the portfolio, and that the company is commissioning in parallel to make up time.

Fluence expects to connect the Houston plant to the grid between October and November. That step, along with delivery of the 2,200 million dollars committed for 2027, is the first test for its record backlog.

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