Transmission and distribution system operators secure today’s and tomorrow’s energy supply. rensys supports you in the planning, construction and expansion of grid-relevant infrastructure – from substations to storage integration and system technology.


We implement substations in the voltage range of 30–380 kV – including planning, approval, execution and standard-compliant commissioning.
We seamlessly integrate feeders and storage solutions and ensure grid stability through protection concepts, grid studies and standardised communication.
We supply primary and secondary technology with grid operator approval, provide full documentation and deliver connection-ready systems in compliance with standards.
We create grid studies and protection concepts in accordance with standards – for reliable, secure grid integration.
We accompany network projects through to synchronised, standard-compliant commissioning – documented and audit-proof.
We provide complete project documentation, ensure auditability and enable straightforward further development.






1000+ successfully implemented energy projects since 1993


The world is on the move — we see global networking and technological dynamism as an opportunity for strong, future-oriented solutions.
Answers to key questions on planning, technology and implementation – tailored for network operator projects.
