Why professional electrical engineering from planning to service is essential

5 min read
TP
Thomas Peterhans
Founder / Managing Director, Pezag AG · Bischofszell
Last checked: October 29, 2026

The most important first

Electrical installations must do more than distribute power today: they should be safe, expandable and prepared for future requirements. Pezag AG accompanies projects from electrical planning through installation to service, repairs and maintenance. For residential buildings, commercial and industrial sectors this is especially important because usage, technology and energy demand often change over time.

For clients and companies, this means: those who plan early save interfaces later and make the system more flexible for new technology. This is where Pezag AG, based in Bischofszell, starts, from professional electrical planning to on-site implementation.

Why professional electrical installations must do more

Whether new construction, conversion, modernization or maintenance, a reliable electrical infrastructure is the basis for safe, comfortable and functional buildings. At the same time, requirements for energy efficiency, modern building technology and expandability of electrical systems are increasing. Therefore, it is not enough to cover only current needs.

From our practice it repeatedly shows: the more precise the planning, the better later expansions can be integrated. This is especially true when lighting, power supply, distributions and new technologies are considered together. At EUROBUS’s bus depot in Bassersdorf, for example, the charging infrastructure for 76 parking spaces is being expanded in stages to 2030. The new transformer station is designed for 3,600 kW and already has reserve spaces for up to 8,000 kW.

What do electrical installations look like in residential construction?

In single-family homes, multifamily houses and apartment renovations, a well-thought-out and safe electrical infrastructure is required. This includes power supply, sockets, lighting installations, electrical distributions and the integration of contemporary technologies.

Especially during renovations it is important to carefully assess existing systems and adapt them to new usage requirements. Those who work cleanly here create not only safety but also room for future requirements.

What is decisive for commercial and industrial buildings?

Commercial and industrial enterprises require electrical systems that are tailored to their processes. From offices and administration buildings to retail spaces and production facilities, reliable electrical installations are essential for daily operation. One example is Messerli’s new logistics hall with 12,600 m² usable area; Pezag AG took care of electrical engineering from planning to execution in just 16 months. Other projects include the expansion of Storz Medical in Tägerwilen with an office building, 4,000 m² warehouse and underground car park, as well as the conversion of a retail branch to LANDI Frauenfeld.

Pezag AG supports clients in new constructions, conversions, industrial installations and lighting renovations. The focus is not only on technology itself but also on reliable operation in daily use.

Why is electrical planning so important?

Professional electrical planning considers not only current needs but also future expansions. Pezag AG plans for residential, commercial and industrial buildings and also relies on Building Information Modeling, BIM.

Coordinating planning and practical implementation allows technical requirements to be considered early and reduces unnecessary interfaces. This makes projects clearer and more economical in execution. Our large projects in recent years were planned entirely in BIM. In the Weitsicht school construction in Märstetten, the construction time was very tight. Therefore, the entire electrical installation was pre-fabricated in the factory on BIM planning basis. On site, only plug connections needed to be connected. This reduced installation effort on site by more than half and the entire project was completed in seven months.

How to keep a system reliable after installation?

Electrical systems require professional care throughout their service life. Pezag AG handles service work, repairs, maintenance and fault rectification for private households, commercial enterprises and industry.

What developments shape electrical engineering today?

In addition to classic electrical installations, network technology, smart home, e-mobility and intelligent energy management are increasingly important. A proactive electrical infrastructure enables meaningful integration of new technologies into existing or new buildings.

Pezag AG combines classic electrical installations with modern electrical solutions and supports clients in implementing their projects.

AreaTypical applicationCustomer benefit
Electrical planningResidential, commercial and industrial buildingsEarly-aligned and expandable solutions
Electrical installationNew build, conversion, renovationSecure and functional infrastructure
Service and repairsPrivate households, commercial, industrialPrompt help with faults and maintenance
Control cabinet constructionCustom systems and controlsAppropriate technical implementation for operation
PhotovoltaicsEnergy projects and self-consumptionIncorporation of modern energy solutions
Pezag AG service areas

Frequently asked questions

When should I involve the electrical installer during a renovation?
Best as early as possible, especially when new user needs, additional consumers or changes to room layout are planned. This way the electrical infrastructure can be designed accordingly from the start, rather than needing to be rebuilt later.
What does planning and execution from one source bring me?
Planning and implementation can be aligned more closely, reducing interfaces. This facilitates coordination and helps develop practical solutions for residential, commercial and industrial buildings.
Does Pezag AG also assist after installation?
Yes, Pezag AG carries out service, repairs and maintenance for private, commercial and industrial systems.
Which projects does Pezag AG cover?
The company handles electrical planning, electrical installations and electrical service. The offering also includes building automation, control cabinet construction, photovoltaic solutions and service for household appliances.

Who relies on professional electrical engineering benefits from a solution that combines planning, execution and support. In this way, electrical installations are not only functional today but also suitable for future requirements.

Especially in complex projects, it becomes clear how valuable a partner who thinks along from electrical planning to service is. Pezag AG links these steps into a seamless offering for residential, commercial and industrial sectors.

Jetzt Elektroplanung oder Service mit Pezag AG starten

Pezag AG, Bischofszell

Beratung anfragen