Optimized power lines


In the past, Germany’s electricity was mainly produced in large power plants located close to the main consumers in urban areas. Nowadays electrical power systems (and energy distribution systems in general) are facing one of the largest technological change ever. Due to the increasing renewable energy percentage in the energy mix, large amounts of electrical energy have to be transported over long distances. Large offshore wind parks in the North Sea are more efficient than wind farms in southern Germany, whereas there are areas with high electricity consumption.

With an “electricity highway”, an optimized transmission grid which can efficiently and reliably transport the energy over long distances, it is much easier to balance electricity generation and demand than relying on regional grids. Less wind farms and solar plants need to be installed in order to keep a sustainable power supply reliable.

However the planning of new transmission lines is often difficult due to opposition of the citizens in the affected areas. Underground cables could be an alternative to overhead lines. However, today’s AC technology is not suitable for an economic long-distance transmission underground. Therefore new technologies have to be developed in order to secure our future energy supply.


• Development of technological components systems and operating strategies for an efficient power transmission (AC and DC)

• Concepts for the stabilization of the electrical power system with an increasing amount of renewable energy from volatile, decentralized sources, facing new consumers such as electric mobility and electricity-based heat supply for the building sector.

• Optimization of the energy management for an efficient and economic usage of operating resources

Selected Projects



Real-Scale Field Experiment Cable Test Site

Test Site for Gas-insulated High Voltage Transmission Lines

Researchers in the field