Who owns Smartstack?
Smartstack is owned by Fluence (the United States, NASDAQ: FLNC).[1]
Evidence: Fluence Energy, Inc. Annual Report on Form 10-K filed 2025-11-25, SEC EDGAR, 25 November 2025. Verified from filings; last checked .
Key facts
- Current owner
- Fluence Energy, Inc. verified
- Owner HQ
- 🇺🇸 United States, Arlington
- Origin
- 🇺🇸 United States
- Category
- Energy › Renewables & clean energy › Storage & EV charging
- Parent ticker
- NASDAQ: FLNC
- Last verified
- · 1 sources
About Smartstack
Smartstack is a Fluence storage platform announced in fiscal 2025. The Form 10-K says its split architecture separates control systems from the battery packs.
What Fluence's annual report says about Smartstack
Sentences about Smartstack from Fluence's latest annual filing[1], copied word for word.
Smartstack : Announced during fiscal year 2025, this platform reflects a revolutionary split architecture design, incorporating embedded intelligence and higher energy density compared to traditional AC systems.
Finally, the launch of our new innovative and market leading product Smartstack has successfully differentiated Fluence's product offering versus standard market solutions. 13 Regulation and Compliance Our business operates within a constantly evolving landscape of laws and regulations at the federal, state, regional, local, and international levels.
How often Fluence names Smartstack in its annual report
A plain count of the times the name appears in the text of each annual report, not counting the start of a sentence. A brand that an owner writes about more is usually one it treats as central. The brand is named more often than it was three years earlier.
Ownership timeline of Smartstack
Where Smartstack sits in Fluence
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
Open the full Fluence ownership tree →
See the full Fluence brand portfolio (2) →
Other brands owned by Fluence
Fluence controls 2 brands on Brandtree, 2 of them in energy.
Also in energy
Other brands in storage & ev charging, and who owns them
The 22 brands in storage & ev charging on Brandtree belong to 19 owners. The largest is CATL, with 2; Fluence has 2.
| Brand | Owner | Owner based in |
|---|---|---|
| CATL | CATL | 🇨🇳 China |
| Megapack | Tesla | 🇺🇸 United States |
| ADS-TEC Energy | ADS-TEC Energy | 🇮🇪 Ireland |
| Amaron | Amara Raja | 🇮🇳 India |
| Beam EV ARC | Beam Global | 🇺🇸 United States |
| Blink Network | Blink Charging | 🇺🇸 United States |
| BYD Energy Storage | BYD | 🇨🇳 China |
| CALB | CALB | 🇨🇳 China |
About the owner: Fluence
Fluence is a publicly listed company headquartered in Arlington, United States. Brandtree records 2 brands under its control, and it is listed as NASDAQ: FLNC.
Fluence's fiscal 2025 Form 10-K describes it as a global market leader in energy storage and optimization software, selling to utilities, independent power producers, developers and commercial customers. It says about 24% of revenue was with related parties, mainly AES and its affiliates, and that AES Grid Stability holds about 66.6% of combined voting power through Class B-1 stock.
🇺🇸 Smartstack and other American brands
Brandtree records a controlling owner for 2,399 brands that began in the United States. 461 of them (19%) are now controlled by a company headquartered in another country; Smartstack is not one of them.
- AES Ohio — AES 🇺🇸
- Agway Energy Services — Suburban Propane 🇺🇸
- Alabama Power — Southern Company 🇺🇸
- AmeriGas — UGI 🇺🇸
- American Transmission Company — WEC Energy Group 🇺🇸
- Arch Resources — Core Natural Resources 🇺🇸
Frequently asked questions
Who is the parent company of Smartstack?
The parent company of Smartstack is Fluence, a publicly listed company headquartered in the United States.
Is Smartstack American?
Yes. Smartstack originated in the United States and its owner, Fluence, is also headquartered in the United States.
Is Smartstack still owned by Fluence?
Yes. As of 11 October 2026, Smartstack is still owned by Fluence. The ownership record was last checked against primary sources on that date.
Sources (1) & corrections
Last verified . Every ownership fact above is backed by one of these primary documents. Numbers in brackets in the text refer to this list.
- [1] Fluence Energy, Inc. Annual Report on Form 10-K filed 2025-11-25 — SEC EDGAR, SEC Form 10-K, published 25 November 2025; retrieved 5 October 2026.
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