Enexis has been working on Smart Charging for a number of years: smart charging electric cars is essential to prevent the national grid from becoming overloaded. A protocol has been developed to address this issue: the Open Smart Charging Protocol (OSCP). This protocol describes the common ‘language’ spoken between the grid manager and those who operate cars in a smart manner. This protocol has been included in the Open Charge Alliance (OCA), which has been proposed to the market as the worldwide standard for Smart Charging since October 2014. This has been a key step in the large scale rolling out of electric transport both within and beyond Europe. 


The protocol makes it possible to indicate to drivers over the next 24 hours exactly how much capacity is available per fifteen minute segments. The notion behind this is that ‘normal users’, such as TVs, streetlights and traffic lights, will be given priority over electric cars. This is because these ‘normal users’ are non-flexible. Electric cars on the other hand are flexible in their use and can be charged at times when capacity exists on the grid.

The same language

Lennart Verheijen, innovator and Enexis’s Smart Charging project manager: ‘Our tests clearly demonstrate that thanks to the OSCP and the accompanying algorithm, at least ten times more cars can be charged at any one location. That’s ten times more than when using uncontrolled charging and all without the need to strengthen the local network! The fact that this protocol is now being disseminated through the OCA is a significant step forward. The main challenge of the smart grid is not in the technology, but in convincing all of the parties involved to share and speak the same language.’

Watch the video about Enexis and Smart Charging: