Energy technology in
Frauenfeld

Friotherm AG

Since 1993 · 11–20 empl.

Friotherm AG develops and manufactures turbo compressors, heat pumps and chillers. The company designs, installs, maintains and refurbishes systems for district heating, district cooling and industrial applications.

Wärtsilä Services Switzerland AG

Since 2014 · 101–500 empl.·3.1(7)

Wärtsilä Services Switzerland AG develops solutions for low-speed two-stroke engines used in marine propulsion and land-based power generation. Its services include technical support, spare parts, field services, retrofit projects and maintenance agreements for these engines.

wattss AG

Since 2024 · 11–20 empl.

wattss AG develops, plans, finances and operates battery storage projects. Its services include large-scale storage for energy providers, infrastructure and industry, as well as modular storage solutions for commercial, industrial and real estate applications.

wattss Services AG

Since 2025 · 11–20 empl.

wattss Services AG develops, finances and operates battery storage projects. It plans and implements large-scale and modular storage solutions for industry, commerce and real estate, providing services from project development through ongoing operation.

AVIA VOLT Suisse AG

Since 2023 · 11–20 empl.·3.0(2)

AVIA VOLT Suisse AG plans, supplies, installs and operates charging infrastructure for properties, businesses, public locations and logistics companies. Its services and products include charging stations, charging cards, billing, consulting, battery storage, operation and maintenance.

wattss Capital AG

Since 2025 · 1–10 empl.

wattss Capital AG structures and finances battery storage projects and provides access to investments in energy storage infrastructure.