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Fluence Energy helps utilities, independent power producers and developers store electricity for later use and integrate renewable generation into the grid. Customers buy systems such as Gridstack Pro and Smartstack, which combine battery hardware with controls and software. System sales account for most revenue; maintenance and digital applications are much smaller businesses.
After deployment, customers can pay Fluence for recurring monitoring, support and maintenance. It also sells cloud software: Fluence Mosaic helps customers forecast electricity markets and optimize trading bids, while Fluence Nispera monitors the performance of storage, solar and wind assets.
A small customer group supplies a substantial share of revenue, with AES and its affiliates particularly important. Deliveries depend on third-party manufacturers and component suppliers, including a single supplier for U.S.-manufactured battery cells. Customers need financing, permits and grid-connection approvals to complete projects. U.S. tax-credit eligibility depends partly on domestic-content and sourcing rules, while forced-labor import restrictions can bar some components from entering the country. These requirements affect which systems Fluence can supply and whether customers proceed with projects.
The risk section is the longest, dullest part of the filing. This keeps only what can really hurt you: where it hits, how hard, when it plays out.
Every company claims an edge. Each one is checked against hard numbers like margins and returns: which hold, and which line gives way first.
Fluence’s results also hinge on battery costs and storage-project execution; watch Wärtsilä, Sungrow and CATL for competition this list does not show.
Tesla competes with Fluence for energy-storage sales, putting Fluence’s pricing and market share under pressure. Watch Tesla’s energy generation and storage business, which sells, leases and finances energy products, rather than its car business.
AES and its affiliates buy Fluence storage systems, so their procurement and deployment matter directly to Fluence’s sales; AES accounted for 13% of Fluence’s backlog at September 30, 2025. AES sells electricity to utilities and other customers, making its storage-project purchasing the activity to watch.
Energy Vault competes with Fluence to deliver and integrate battery-storage systems for customers, including the software and ongoing services. Watch its third-party storage deliveries and pricing, rather than treating its shift toward owning and operating storage assets as the same business as Fluence’s.
Canadian Solar sells battery-storage solutions to customers and explicitly names Fluence as a competitor, so its storage business matters to Fluence’s competitive position. Watch battery-storage shipments and system pricing, not just its solar-module business.
Eos competes for storage spending by utilities and industrial customers that also buy Fluence systems. Its Z3 battery module is designed to discharge for 3 to 12 hours or longer, making sales of these longer-duration systems the relevant signal for Fluence.
Stem competes for the software and service spending Fluence earns from storage and renewable-energy assets. Stem sells PowerTrack and lifecycle storage services to developers and asset owners, so watch its monitoring and storage-optimization business alongside Fluence’s Mosaic and Nispera offerings.
Shoals benefits from construction of the same grid-connected storage projects that drive demand for Fluence systems, but supplies electrical infrastructure rather than storage systems. Watch its infrastructure business for standalone storage and solar-plus-storage projects, not its data-center offerings.
AES Corporation earningsAES
AES’s report can show whether it is buying and deploying storage systems, a direct source of orders for Fluence.
Watch AES’s disclosed storage purchases and project deployments; as of September 30, 2025, AES accounted for 13% of Fluence’s backlog. Continued purchasing and deployment would suggest this major customer can keep supporting Fluence’s project revenue; delays or cutbacks would raise the risk to Fluence’s sales timing and customer concentration. The conclusion is whether AES projects can keep turning into Fluence orders and deliveries.
Stem, Inc. earningsSTEM
Stem’s report will show whether storage and renewable-asset owners are buying monitoring and optimization services, a market Fluence also serves.
Watch Stem’s disclosed monitoring and storage-optimization activity alongside the direction of revenue from Fluence’s Mosaic and Nispera digital products and services. Stronger activity at Stem would show that asset owners are paying for these services, supporting Fluence’s opportunity but also confirming competition; weaker activity could point to soft customer demand or willingness to pay, not an automatic win for Fluence. The conclusion is whether spending on digital services is growing and whether Fluence can capture it.
Energy Vault Holdings, Inc. earningsNRGV
Energy Vault’s report will show its third-party storage deliveries and pricing, testing the competitive pressure on Fluence’s integrated systems.
Read Energy Vault’s third-party storage deliveries together with its pricing. More deliveries at firm prices would show customers have a capable alternative and make competition for Fluence projects more tangible; slower deliveries could ease that pressure, but not if they reflect weak demand across the market. The conclusion is whether changes come from a rival winning projects or from storage demand itself weakening.
Fluence Energy, Inc. earningsThis company
Fluence Energy, Inc.’s report will show whether it can deliver storage projects and protect project margins as system prices fall.
Read fulfilled storage-project volume alongside gross margin. More deliveries with a steady or improving margin would show that execution and cost efficiency are offsetting price pressure; weak deliveries or a falling margin would show that delays, pricing or delivery costs are still eroding returns. The conclusion is whether Fluence can turn contracted projects into profitable deliveries.
