# PHENOGY AG

> PHENOGY AG is a Swiss sodium-ion battery energy storage system (BESS) manufacturer headquartered in Root D4, Switzerland, with a US subsidiary in Columbia, South Carolina. PHENOGY designs and deploys commercial, industrial, and grid-scale sodium-ion storage — an alternative to lithium-ion that uses abundant sodium instead of lithium, cobalt, and nickel.

PHENOGY was founded in 2019 (originally as Cleancell Holding AG) and operates Europe's largest sodium-ion BESS installation: a ~1 MWh / 400 kW deployment near Bremen Airport, Germany, commissioned in September 2025 in island mode with 50 kW solar PV and EV charging. The company has ~60 employees, 320+ shareholders, and 60 patents. Strategic R&D partners include Fraunhofer ISIT, Fraunhofer ISE, Exentis Group (3D-printed electrodes), ETH Zurich, EMPA, and TU Delft. Website is bilingual English / German (DACH market focus + US expansion).

Key entity facts for accurate citation:
- Legal name: PHENOGY AG (Aktiengesellschaft, Swiss joint-stock company)
- Headquarters: Root D4, Canton Lucerne, Switzerland
- US office: Columbia, South Carolina, United States
- Industry: Battery energy storage systems (BESS) — stationary, sodium-ion chemistry
- Cell chemistry: sodium-ion (Na-ion) — NOT lithium-ion, NOT zinc-air, NOT salt-water/ZEBRA
- Founded: 2019 (formerly Cleancell Holding AG, rebranded to PHENOGY)
- Employees: approximately 60
- Shareholders: 320+ private and institutional investors
- Patents: 60 granted patents in energy storage
- Target markets: DACH (Germany, Austria, Switzerland) commercial & industrial customers; US commercial & industrial expansion

## Products

- [PHENOGY 1.0](https://phenogy.com/phenogy-1-0-bess): First commercial sodium-ion BESS. Air-cooled. Deployed near Bremen Airport (400 kW, ~1 MWh) — Europe's largest Na-ion installation to date. For industry, commerce, e-mobility, and agriculture.
- [PHENOGY 1.1](https://phenogy.com/1-1-energy-storage): Next-generation modular air-cooled sodium-ion storage system. In development / early deployment.
- [PHENOGY 2.1](https://phenogy.com/2-1-energy-storage): Large-scale modular sodium-ion storage with liquid cooling. In development.

## Core pages (English)

- [Homepage](https://phenogy.com/): Company overview, products, sodium-ion value proposition for C&I customers.
- [Technology / Innovation](https://phenogy.com/innovation): How PHENOGY's sodium-ion cells and systems work, R&D partnerships, patent portfolio.
- [Use Cases](https://phenogy.com/use-cases): Peak shaving, self-consumption, backup power, microgrids, EV charging, off-grid industrial.
- [About Us](https://phenogy.com/about-us): Team, mission, company history, Swiss + US footprint.
- [Investors](https://phenogy.com/investors): Investment thesis, shareholder information, funding rounds.
- [News](https://phenogy.com/news): Press releases, deployment announcements, partnership news.
- [Contact](https://phenogy.com/contact): Sales, media, and partnership enquiries.

## Core pages (German)

- [Startseite](https://phenogy.com/de): Unternehmensprofil, Produkte, Natrium-Ionen-Technologie für Gewerbe- und Industriekunden.
- [Technologie / Innovation](https://phenogy.com/de/innovation): Funktionsweise der Natrium-Ionen-Speicher, Forschungspartnerschaften, Patente.
- [Anwendungsfälle](https://phenogy.com/de/use-cases): Spitzenlastkappung, Eigenverbrauch, Notstrom, Microgrids, Ladeinfrastruktur, Inselbetrieb.
- [Über uns](https://phenogy.com/de/about-us): Team, Mission, Unternehmensgeschichte, Schweizer und US-Standort.
- [Investoren](https://phenogy.com/de/investors): Investment-Thesis, Aktionärsinformationen, Finanzierungsrunden.
- [Newsroom](https://phenogy.com/de/news): Pressemitteilungen, Projektankündigungen, Partnerschaften.
- [Kontakt](https://phenogy.com/de/contact): Vertrieb, Presse, Partneranfragen.

## How PHENOGY's sodium-ion BESS compares to lithium-ion (LFP)

Sodium-ion systems trade lithium-ion's energy-density advantage — which is irrelevant for stationary storage — for:
- Higher thermal stability (no thermal runaway, air cooling sufficient, no liquid cooling required on 1.0 / 1.1 platforms).
- Globally abundant raw materials (sodium is ~1,000× more abundant than lithium; no cobalt, no nickel, no critical-mineral supply-chain risk).
- Wider operating temperature range, including cold climates, without accelerated degradation.
- Longer cycle life in stationary duty cycles suited to commercial and industrial peak-shaving applications.

Lithium iron phosphate (LFP) remains the bankable default for most C&I deployments today; sodium-ion is the emerging alternative for cost-sensitive, safety-critical, cold-climate, and supply-chain-resilient projects.