TEST

SERVICE

Power reliability through engineered solutions

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Our core mission is to deliver comprehensive and reliable backup power systems

Services

Comprehensive, end-to-end support for backup power and energy infrastructure projects

Technical consultation on energy infrastructure planning, backup power needs, and energy efficiency strategies

System design and technology selection, including electrical layout, exhaust and ventilation requirements

Procurement and delivery of certified backup power equipment tailored to site and application

Professional installation, including mechanical, electrical, and systems integration, ensuring full operational readiness and compliance

Warranty and post-warranty maintenance, with regular monitoring and preventive maintenance, including operational inspecions

24/7 technical support, providing fast response and on-site troubleshooting when needed

Our company

30+ years of expertise in backup power systems

Test Service is an engineering company with over 33 years of experience in the design, supply, and maintenance of backup and uninterruptible power systems. Since 1992, we have built lasting trust with businesses, institutions, and critical infrastructure operators across Bulgaria.

We specialize in:

Diesel generators — reliable power backup units suited for industrial, commercial, and institutional facilities. Each diesel genset is delivered, installed, and maintained by our qualified engineering team.

UPS systems — uninterruptible power supply units, which provide instant protection against voltage drops and outages. The uninterruptible power supplies in our portfolio are tailored to installations of varying scale and complexity.

To meet modern energy demands, Test Service also offers energy storage systems — battery-based solutions for energy independence and optimization. Our battery energy storage units are suitable for standalone use or in combination with renewable energy sources.

The scope of our services encompasses all activities regarding engineering consulting, design, installation and warranty and post warranty maintenance.

Products

Diesel Generators

UPS Systems

Energy Storage Systems

Project roadmap

From Need to Reliable Supply

Step 1

Consultation & Planning

Initial consultation, site inspection, and calculation of required power capacity. Development of a complete backup power concept tailored to the specific needs of the site and the client.

Step 2

Design & Coordination

Preparation of detailed designs — structural, electrical, and HVAC. Coordination of the project scope with the client and preparation of comprehensive offers based on detailed bills of quantities (BOQ). Review of regulatory requirements, identification of any special certifications needed, and compliance with specific approvals for special-status sites.

Step 3

Delivery, Installation & Commissioning

Delivery and installation of the equipment, including all required testing to ensure proper operation, such as 72-hour continuous trials. Training of on-site personnel in operating the system, emergency procedures, preventive maintenance, and scheduled servicing.