Zenessis is a European brand of Endress Zenessis Group, specializing in the design, manufacturing, and implementation of backup and autonomous power supply solutions. The company offers diesel and gas generators, UPS systems, hybrid energy solutions, and energy storage systems designed for industrial, commercial, and infrastructure applications. The group’s headquarters are located in Romania, while its manufacturing and engineering facilities operate in Romania and Germany.
Zenessis operates two modern manufacturing facilities in Bocșa, Romania, where the entire production process is carried out – from metal fabrication and assembly to electrical panels, automation, and final testing. Its manufacturing program includes generators with power ratings ranging from 20 kVA to 3000 kVA, with a significant share of production exported to European markets.
History
The history of Zenessis is built on more than 100 years of experience in the development of power generation solutions. According to the company, its first internal combustion engine generator was developed in 1927, and the engineering expertise accumulated over the decades has been applied to the development of today’s Zenessis products.
The modern Endress Zenessis Group was established in 2002 with the goal of providing complete energy solutions for Eastern European markets. The company later expanded its manufacturing capacity in Romania, while its product portfolio grew to include generators, UPS systems, energy storage systems, photovoltaic solutions, and intelligent power management systems. Today, Zenessis exports a significant portion of its production to international markets and serves customers across numerous European countries.
Key milestones in the company’s development include:
1927 – Development of the first internal combustion engine generator.
2002 – Establishment of Endress Zenessis Group.
Construction of manufacturing facilities in Bocșa, Romania.
Expansion of the product portfolio with UPS systems and energy solutions.
Development of hybrid systems and energy storage solutions.
Expansion of exports across numerous European countries.
Continuous investment in manufacturing technologies and automation.
Product range
Zenessis offers complete solutions for power generation, protection, and power management, serving industrial facilities, telecommunications, data centers, healthcare, and critical infrastructure.
Diesel generators
The company’s primary product line includes diesel generators with various power ratings designed for:
Industrial facilities
Hospitals
Data centers
Public buildings
Telecommunications sites
Emergency backup power applications
Gas generators
The company offers gas-powered generators for continuous power generation, suitable for:
Industrial applications
Combined Heat and Power (CHP) systems
Power plants
High-energy consumption facilities
UPS systems
Zenessis develops Uninterruptible Power Supply (UPS) systems that provide reliable protection for critical equipment, including:
IT infrastructure
Server rooms
Telecommunications equipment
Medical systems
Industrial automation
Hybrid and energy systems
The company provides advanced solutions for intelligent power management, including:
Hybrid generator systems
Energy Storage Systems (ESS)
Photovoltaic solutions
Integrated energy management systems
Additional solutions and services
The product portfolio is complemented by a wide range of engineering services and equipment, including:
