Energy technology in
Wollerau

Northern Power Systems AG

Since 2009 · 1–10 empl.

Northern Power Systems AG designs and supplies wind turbines for distributed energy and on-site generation. The company delivers turnkey wind projects and hybrid energy systems and microgrids, and provides services to modernize existing installations.

Whitecell Power AG

Since 2021 · 51–100 empl.

The company's core activity is the development and production of fuel cells and electrolyzer stacks, as well as the engineering and testing of automotive powertrains, including electric drives. The company specializes in the application of 3D screen printing technology for the production of graphite bipolar plates and other fuel cell components.

MW Storage Suomi THREE AG

Since 2024 · 1–10 empl.

MW Storage Suomi THREE AG is a company that plans, finances and operates industrial energy storage systems and provides system solutions to improve energy efficiency.

MW Storage TWO AG

Since 2024 · 1–10 empl.

MW Storage TWO AG plans, finances and operates industrial energy storage systems and provides system solutions to improve energy efficiency. Services include peak shaving, reactive power compensation and solar energy storage, and the company develops and finances large-scale battery projects.

MW Storage International AG

Since 2024 · 1–10 empl.

MW Storage International AG plans, finances and operates industrial energy storage systems and provides system solutions to increase energy efficiency. The company offers services to grid operators such as peak shaving, reactive power compensation and storage of solar power, and implements large‑scale battery projects.

MW Storage Suomi ONE AG

Since 2024 · 1–10 empl.

MW Storage Suomi ONE AG plans, finances and operates industrial energy storage systems and provides system solutions to improve energy efficiency. It offers services to grid operators such as peak shaving, reactive power compensation and solar power storage.

SE Step-Up AG

Since 2021 · 1–10 empl.·5.0(3)

EPC Solutions AG provides engineering, procurement and construction (EPC) and project delivery services for renewable energy projects. Offerings include negotiating EPC contracts, on-site construction supervision, arranging project financing and supporting operations and asset management for solar, wind and green hydrogen projects.

Proman Abidjan LNG AG

Since 2026 · 11–20 empl.

Proman Abidjan LNG AG is part of the Proman Group and supports global projects focused on methanol and ammonia. The website also describes activities in project development and in the management of engineering and construction projects.

Cenvion AG

Since 2025 · 1–10 empl.

Cenvion AG is an operating partner for infrastructure assets and provides proactive management, transaction support, strategic advisory and portfolio management. Its focus is on energy, storage technologies and flexibility solutions, as well as the operational management and development of infrastructure platforms.

Junova Ventures AG

Since 2024 · 1–10 empl.

Junova Ventures AG develops and advances large-scale green ammonia projects and provides project development, pre-FEED/FEED and detailed engineering services up to the Financial Investment Decision (FID) stage. Its activities include feasibility studies, concept design, engineering, and arranging renewable energy supply and product offtake for sectors such as maritime shipping, heavy industry and agriculture.

Vintage Energy SA

Since 2005 · 1–10 empl.