The EV charger operating system that makes your engineers and customers happy

Developed by the world’s leading experts on EV charging communication standards, Josev takes care of testing and implementing the latest standards so you can focus on what makes you stand out.


Always ahead of the curve

With the latest OCPP and ISO 15118 standards always enabled, your EV charging experience is the easiest, most secure and best
it can be for drivers.


Powered by Josev, designed by you

Josev makes it simple to add services and third-party integrations to your hardware. Our well-documented and flexible MQTT API helps to run each application in a sandboxed environment, making it easy to maintain and
update other apps.


Easy to integrate and ready to go

Josev as standalone software

We provide a worldwide, life-time licence for integrating Josev to each charger. There’s also a yearly fee for ongoing updates to Josev.

Josev embedded in our communication controller

We offer a communication controller pre-installed with Josev, significantly reducing the cost and time to install. We can also provide Josev embedded into its own communication controller, costs and lead times depend on your needs.

With you every step of the way

Either way, there’s no extra charge for Switch support. You’ll always have direct access to the world’s leading team of EV charging infrastructure software experts. We take care of ISO 15118 and OCPP compliance and support you for the long term – while you focus on what makes you different.

Technical specifications
01ISO 15118-2 including Plug & Charge

Enables the most user-friendly and secure charging experience for both AC and DC chargers

02ISO 15118-3 including SLAC

Establishes the data link between EV and charger via the charging cable (through  PLC  via on HomePlug Green PHY)

03ISO 15118-8

Establishes the data link between EV and charger via wireless communication (based on IEEE 802.11n)

04ISO 15118-20 including Plug & Charge

Second generation ISO 15118, enables vehicle-to-grid, wireless charging,  ACD-P , higher data security, and more

05OCPP 2.0.1

Facilitates future-proof features like built-in ISO 15118 support, plug & play installation, powerful remote control & monitoring

06ISO 15118 message analyser*

The communication between the EV and the charger is usually a black box for CPOs. If the communication fails for some reason, the CPO has usually no insight as to why it happened.

Josev’s ISO 15118 message analyser solves this problem. It logs the ISO 15118 communication between the EV and the charger to enable an in-depth message analysis via a user-friendly cloud-based web interface, including detailed error reporting to enable a more efficient debugging process.

*only supported by Sara

josev community

Open sourced for a stronger foundation

Josev Professional is based on Josev Community, our open source ISO 15118 implementation. We strongly believe in collaboration and sharing knowledge to propel the e-mobility industry forward. Broad collaboration and peer review from our community will always lead to a more durable outcome.

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Switch GuarAntee

Always up to date

Our over-the-air update technology guarantees your software is always up to date, and your charger always runs on trusted and well-tested firmware, whether it’s new versions of Josev’s own ISO 15118 and OCPP code or third-party apps.

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work with us

Let’s make working together easy

Switch provides a worldwide, life-time software licence for the integration of Josev to each charger.

There is also a yearly fee for ongoing updates to Josev. We can provide Josev already embedded onto its own communication controller. Costs and lead times for this are dependent on your production volume requirements.

There is no additional charge for Switch support, which is unlimited. This guarantees your software implementation requirements are fully executed, with direct access to the world’s leading team of charging infrastructure software experts.

Speak to us today →


switch suite

Unleash the next generation of EV charging

Cutting-edge technology that gives you a hi-definition insight into every part of each charging event — from the car, to the grid and through every detail of your network.

Our package running Sara AND Josev simultaneously takes your network to the next level.

Device Management
Device Management

With OCPP 2.0.1 and the new device model concept, a station can automatically describe its full layout and capabilities to the cloud-based CSMS. This allows for plug-and-play installation of a charging station. It also lets the CSMS read and control any component remotely.


Sara stands for Station Analytics and Remote Administration

Open charge alliance

The Open Charge Alliance is the official body that specifies OCPP 2.0.1 and defines a set of certification profiles. Each profile tests a certain set of functionalities. Depending on the functionality of your charger or CSMS, you might want to certify for either a subset or all of these profiles.


Continuous Integration / Continuous Deployment (CI/CD)


Scotti stands for Simple Compliance Testing Tool for Interoperability.

Efficient XML Interchange (EXI)

Efficient XML Interchange (EXI) is a very compact representation of XML. All ISO 15118 messages are defined in XML. EXI improves serialisation and parsing speed on embedded devices (like an EV and a charging station controller) and allows more efficient use of memory and battery life, compared to standard (textual) XML.

Message Queuing Telemetry Transport (MQTT)

The Message Queuing Telemetry Transport (MQTT) is a lightweight, publish-subscribe network protocol that transports messages between devices.

Charging Station Management System (CSMS)

A CSMS is a cloud-based management system operated by the company that is managing the charging stations. A charging station connects to a CSMS using OCPP (Open Charge Point Protocol).

Automated Connection Device (ACD)

Automated Connection Device (ACD), a conductive charging concept that doesn't require a person to plug in the charging cable. A first implementation is ACD-P, where 'P' stands for 'pantograph' charging of buses.

Power line communication (PLC)

Power line communication, a communication technology that enables sending data over existing power cables.

Signal Level Attenuation Characterisation (SLAC)

Signal Level Attenuation Characterisation (SLAC) is based on power line communication (specifically HomePlug Green PHY) and is a protocol to establish the data link between the EV and the charging station via the charging cable.

Charge Point Operator (CPO)

Charge Point Operator, the entity monitoring and managing an EV charger network.