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Wetzlar, Hesse, DE
Janitza
German manufacturer of energy meters, power-quality analyzers, and energy-management software used in data centres, industry, and critical infrastructure.
Janitza is a German manufacturer of energy-measurement technology, founded in 1986 and headquartered in Lahnau, Hesse. The company develops and manufactures measurement devices, software, and integrated energy-management systems in Germany. Its equipment is used in data centres, industrial facilities, critical infrastructure, and energy utilities in over 90 countries, where continuous monitoring of power consumption, power quality, and residual currents underpins operational reliability. Janitza employs more than 600 people worldwide and marked its 40th anniversary in 2026.
The product portfolio spans energy meters, digital panel meters, mobile power-quality analyzers, and Class A power-quality analyzers compliant with the EN 50160 standard, together with residual-current monitoring systems and load-management controllers. GridVis, the company's software platform, collects and analyses energy consumption data across these devices. Technical domains covered include power quality analysis, energy management, residual current monitoring, load management, and measurement software and data analytics.
Janitza is family-owned, with ownership remaining with the founding Janitza family. Alongside hardware and software, the company provides commissioning, training, maintenance, and project services, and concentrates on energy efficiency, power reliability, and operational resilience.