Case study: Workplace charging and smart charging at DNV
DNV conducted a case study analysis of more than 100 active EV chargers at the DNV headquarters in Norway, in collaboration with Defa AS.
DNV, in collaboration with DEFA AS and CloudCharge, conducted a smart charging trial with more than 100 active EV chargers at the DNV headquarters in Norway. This installation, implemented in 2016, was among the largest in Europe at the time and has proven to be immensely valuable. The chargers consistently experience full utilization on working days, acting as a significant incentive for employees to make the switch to electric vehicles.
The primary objective of the trial was to assess the feasibility of implementing smart charging at workplace car parks. The findings revealed a strong willingness among drivers to participate in providing flexibility services to the grid, with one crucial condition: ensuring they had sufficient energy remaining in their cars to comfortably return home at the end of the day. The potential issue of energy scarcity only affected a few drivers of very old EV models.
Moreover, the study shed light on the possibilities of enabling existing charging infrastructure to offer flexibility services.
To future-proof charging facilities and maximize the benefits of smart charging going forward, the implementation of new chargers with advanced features such as OCPP 2.0.1 and ISO 15118 is crucial.
Another important aspect examined during the investigation was the power quality and harmonics of the facility. Although harmonic levels were discernible, they remained well within the limits specified by local grid codes. However, as high-power chargers and large charging hubs become more prevalent, the management of harmonic emissions and power quality will gain even greater significance.
This study emphasizes the importance of flexibility in EV charging infrastructure, showcasing its potential to optimize energy usage, enable grid support, and accommodate the growing needs of electric vehicle owners.