Joulz is a leading owner and provider of essential energy infrastructure equipment and services in the Netherlands. It leases essential energy infrastructure equipment to a large and diversified customer base of industrial, commercial and public sector customers. It has four business units: Infrastructure Services, Charging Solutions, Solar, and Metering.

The Infrastructure Services business owns and leases medium voltage electricity infrastructure such as transformers, switchgear and cables under long-term contracts. Charging Solutions is a Charge Point Operator. The Solar unit focusses on industrial and commercial and other large property roofs for solar plants. The Metering business owns and leases approximately 50,000 electricity and gas meters for non-household customers under medium term contracts.


In 2021 Joulz has lounged a new product, Joulz Virtual Grid: an autonomous power solution, just as robust as electricity from the grid, but without actual power from the grid.

Why? Don’t we have one of the most robust grids in the world? We do… or we did to be more precise. We are in transition, the energy transition. And while we are turning away from chemical energy carriers into electric power, we are also changing from centralised energy production towards decentralised production. These two movements combined and the speed of transition cannot currently be maintained by the grid operators. Many property developers are getting a firm “NO” when they request a new grid connection and developments are stopped or postponed.

Our solution: In a microgrid we combine solar roofs with batteries to provide a robust base load. However, during the winter this is not sufficient. Therefore, during the winter, we are adding power generated by gas turbines. As back-up we have batteries and diesel generators. This leads to a robust system with 99.99% reliability.

We are not satisfied however. We want to get rid of all fossil fuels and are looking for another winter time source of energy. Can you help Joulz solve this problem? In this workshop we will use the methodology of ‘flip-thinking’ to tackle this tough problem. With a interdisciplinary team of students we will gain new perspectives. We are looking forward to flip-think with you!