Electrical engineering, control panel construction, automation and photovoltaics from Bischofszell
Pezag Elektro AG
Bischofszell TG · SitterdorfNew on Amplifa
About Pezag Elektro AG
Pezag Elektro AG was founded in 1991 by Thomas Peterhans in Bischofszell and has been a stock corporation (Aktiengesellschaft) since 2000. The company with over 90 employees offers services in the fields of electrical engineering, automation, energy, photovoltaics and household appliances. The range of services includes electrical planning, electrical installation, industrial installation, control panel construction, hardware engineering and building automation – from consulting and planning to implementation from a single source. Since 2023, the Energy division has united all areas of renewable energies, including the planning and installation of photovoltaic systems. Since 2025, a DJI FlyCart 30 transport drone with up to 40 kg payload has been used for the installation of solar modules. The headquarters is at Eichenstrasse 3 in Bischofszell; the automation division is located in Sitterdorf. The company has been ISO 9001 certified since 1998 and trains apprentices in several professions.
- Site
- Bischofszell
- Processes
- Electrical installation, Electrical planning, Control panel construction, Hardware engineering, Industrial installation, Building automation, Photovoltaic systems (installation), Household appliance sales and repairs
- Certificates
- ISO 9001
- Founded
- 1991
- Employees
- over 90
- Industries
- Electrical engineering, Automation/Building automation, Renewable energies/Photovoltaics, Household appliances, Private and public buildings
- 01
Consulting
- 02
Electrical planning
- 03
Engineering (hardware, building automation)
- 04
Control panel manufacturing
- 05
Installation
- 06
Commissioning and service
Locations
Bischofszell
CHHeadquarters: electrical engineering, automation, energy, photovoltaics, household appliances, retail and showroom
- Fully automatic machining center (control panel manufacturing)
- Transport drone DJI FlyCart 30 (up to 40 kg payload)
Sitterdorf
CHAutomation division (founded 1999)
Services
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Electrical installationAssembly | – | – | – | – | – |
| Electrical planningEngineering | – | – | – | – | – |
| Control panel constructionAssembly | – | – | – | – | – |
| Hardware engineeringEngineering | – | – | – | – | – |
| Industrial installationAssembly | – | – | – | – | – |
| Building automationEngineering | – | – | – | – | – |
| Photovoltaic systems (installation)Assembly | – | – | – | – | – |
| Household appliance sales and repairsAssembly | – | – | – | – | – |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Transport drone | DJI FlyCart 30 | 1 | – | 2025 | Bischofszell TG |
| Fully automatic machining center (control panel manufacturing, details unknown) | – | – | – | 2022 | Bischofszell TG |
Additional services
Quality
Pezag Elektro AG has been ISO 9001 certified since 1998 and, according to its own statements, works from planning to implementation with a commitment to quality.
| Evidence | Bischofszell |
|---|---|
| ISO 9001 |
History
- 1991
Thomas Peterhans founds Pezag Elektro AG as a general partnership (Kollektivgesellschaft).
- 1998
Introduction of ISO 9001 certification; first apprentice as an electrical fitter.
- 1999
Foundation of the automation division in Sitterdorf.
- 2000
Conversion into a stock corporation (Aktiengesellschaft).
- 2006
Move into the new company building at Eichenstrasse 3 in Bischofszell with 200 m² of retail space.
- 2011
Foundation of the photovoltaics division.
- 2013
13 apprentices under contract, including electrical installer, automation technician and commercial clerk.
- 2014
Commissioning of a photovoltaic system on the company roof; 46 employees.
- 2016
Installation of a solar charging station on the exterior wall; 25th anniversary.
- 2017
Move into the west extension with 595 m² on three floors plus a 344 m² shelter.
- 2018
Stefan Brühlmann becomes co-owner and member of the management; Thomas Peterhans nominated as 'Thurgauer of the Year'.
- 2021
30th anniversary; start of the north extension.
- 2022
Move into the north extension with offices, showroom, canteen and fully automatic machining center; expansion of the photovoltaic system to 100 kWp with storage.
- 2023
Refoundation of the Energy division with integration of the photovoltaics unit; Philipp Aeberhard strengthens the management.
- 2024
Vehicle fleet grows to 58 cars, of which 13 are electric cars.
- 2025
Deployment of the DJI FlyCart 30 transport drone (up to 40 kg payload) for the installation of solar systems; over 1,400 modules in 5 days.