Intertest Ltd., founded in 2015, is a dynamic company established by a team of engineers with extensive experience in substation design and the commissioning of projects in the energy sector. Our core focus is delivering comprehensive engineering solutions for medium- and high-voltage substations and power plants, ensuring exceptional quality across all systems.

We are proud to maintain TÜV Rheinland certification for the following standards:

• ISO 9001:2015 – Quality Management Systems
• ISO 14001:2015 – Environmental Management Systems
• ISO 45001:2018 – Occupational Health and Safety

At Intertest, we utilize a wide range of high-quality calibrated equipment and possess the necessary software licenses to deliver modern, top-tier services. Our latest milestone is the development of a state-of-the-art Mobile Testing Lab, designed for advanced monitoring and diagnostics of power transformers and rotating electrical machines. Equipped with cutting-edge technology, this lab enables us to conduct a wide array of tests with unmatched precision and efficiency, ensuring the highest service standards for our customers.

Our operations comply with the requirements of EN ISO/IEC 17020, as accredited by the Executive Agency "Bulgarian Accreditation Service," recognizing Intertest as a Type C commissioning body.

At Intertest, we believe that continuous training and the adoption of innovative technologies are the cornerstones of our successful partnerships. Our mission is to adapt to our customers’ evolving needs while seeking out new opportunities and challenges.