VentoStream AG

About VentoStream

VentoStream AG develops and manufactures a compact wind turbine with patented energy converter technology. The turbine, with a diameter of 3.5 meters, uses an aerodynamic suction effect that accelerates the wind flow and achieves high power density even at moderate wind speeds. A single turbine supplies around 60 households; up to six turbines can be combined into a system unit. Installation is possible on buildings or on masts from 5 meters in height – for decentralized power generation in urban spaces, at companies, or in wind parks. Rotating parts are not visible from the outside, so the turbine operates without shadow flicker or bird strikes, runs quietly, and delivers power even in low winds and extreme conditions. Founded in 2023 by the Bernsau family with two founding investors, the company is building a pre-series wind turbine in 2025 and plans the first small-series production for 2026. Before every installation, VentoStream offers an individual site analysis to measure the local wind energy potential.

Site

Location not specified

Processes

Individual site analysis (on-site wind energy potential measurement), System units with multiple turbines (planned), First small-series production planned (2026)

Founded

2023

Industries

Wind energy, Energy supply, Decentralized power generation for businesses and urban spaces

1. 01

   Development

2. 02

   Site analysis

3. 03

   Manufacturing

4. 04

   Assembly

Products & Systems

Inside the production

History

1. 2010

   Gebhard Bernsau develops the idea of a new method of wind energy generation

2. 2016

   Energy converter machine built and first patent granted

3. 2020

   First fully functional prototype, wind tunnel tests

4. 2023

   Founding of VentoStream AG by the Bernsau family with two founding investors

5. 2024

   3rd place in the Swiss Innovation Challenge

6. 2025

   Development and manufacturing of the pre-series wind turbine, company expansion

7. 2026

   First small-series production planned