Electrical power engineering expert services in Finland and everywhere in the Nordic countries

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Tammerfast Oy is an expert in electrical power engineering.

We are specialized in critical electrical power engineering infrastructure from high voltage applications to low voltage. We provide fast commissioning, installation supervising, installations and protection relay testing. We also offer operating management and maintenance planning. We provide services for power plants, electrical grids and industrial companies everywhere in the Nordic countries.

As our name suggests, our special strength is fast service with things such as electrical power engineering commissioning and testing.

When you’re looking for expert assistance with electrical power engineering commissioning, testing, installation supervising or operating management, contact Tammerfast! The easiest way to reach us is by phone, but you may also submit your enquiry by e-mail or through the contact form on our website.

Sähköasentaja tarkastamassa sähköasennuksia

Electrical power engineering expert services

We offer electrical power engineering and electrical power infrastructure commissioning, field supervising, testing and operating management services everywhere in the Nordic countries..

Etualalla seisovan sähköasentajat takana näkyy sähkötolppia

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Ask more about our services if you are a representative of an industrial company or power plant anywhere in the Nordic countries. We’ll be happy to tell you more! You may also directly request an offer for our services..

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Company background

Tammerfast Oy was founded in 2018, and our headquarters is located in Tampere. Our company offers the fastest solutions in the market for the commissioning and testing of a 400 – 20 kV protection system as well as maintenance, supervising, planning and project management in the energy industry. We are specialized in high voltage applications and have experience in projects including commissioning of power plants and wind turbines, as well as solar and hydroelectrical plants. The advancement of sustainable development and deceleration of climate change are important values for us, and that is why we like to work for the promotion of the growth of renewable energy. Find out more about our prior work on the References page or contact us for more information about our services!

Service with expert skill

Expertise in electrical power engineering and uncompromising business ethics are the key values of our work. We offer our expertise for projects including commissioning, testing, installation supervising and operating management in the field of electrical power engineering. We do our work quickly, safely and with quality without compromising on even the strictest of standards.


We are a reliable partner for those looking for an independent and experienced expert in electrical power engineering who is familiar not only with technical work standards, but also the principles of sustainable development. We are able to provide our services for businesses of all sizes regardless of industry, as we are not committed to any single supplier or manufacturer. For example, we are able to test the equipment of all manufacturers at all voltage levels.


So if you’re looking for an expert for the commissioning or testing of electrical installations, contact us! We will provide you with quick and competent assistance.

Read more about our services