• Joulz New



    Joulz is a leading owner and provider of essential energy infrastructure equipment and services in the Netherlands. Joulz serves approximately 21,000 industrial, commercial, and public sector clients with its solutions, that encompass realization, maintenance, management, and leasing of energy infrastructure equipment.

    Joulz’ service offering includes mid-voltage infrastructure (owning and leasing transformers, switchgear and cables under long-term contracts), storage (owning and leasing large scale battery storage systems under mid- to long-term contracts), solar (large-scale installations under operational lease or with government-subsidized PPAs), metering (owning and leasing 50,000 electricity and gas meters under mid-term contracts) and EV charging (AC and DC charge points in mid-term exploitation, rental or CPO contracts). Additionally, it provides integrated solutions to address energy transition challenges such as grid congestion.

    Recent developments

    Joulz performed in line with expectations. It is benefitting from its inflation-linked longterm contracts and the completion of new installations. Joulz has seen significant interest in integrated energy transition solutions from customers seeking to decarbonise their operations and overcome constraints due to electricity grid congestion.

    Investment Rationale

    3i Infrastructure acquired Joulz in April 2019, having committed to invest in March 2019.

    • Strong established asset base as well as good potential for growth
    • Joulz is set to benefit from the Dutch government’s commitment to decarbonise the economy (the ‘Energy Transition’)
    • The Energy Transition is expected to increase electricity consumption and demand for Joulz’s equipment and services
    • 3i Infrastructure has relevant experience from investing in the Netherlands and previous investments in the electricity and leasing sectors


    In 2023 Joulz installed solar capacity of 14MWp taking cumulative owned capacity to 36MWp by the end of the year. The business is also investing in battery storage systems and EV charging infrastructure. These offerings combined with traditional energy infrastructure (such as transformers and meters) have enabled Joulz to become a leader in providing integrated solutions to businesses in the Netherlands.