A future-proof operating system for AC and DC chargers

Crowdfunding initiative by V2G Clarity

raised 90,000€ out of GOAL 240,000€
3 backers
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We are witnessing an industrial revolution

The rapidly evolving e-mobility industry brings electric vehicles (EVs) on the market that help us shift away from gasoline and diesel cars and mitigate climate change – one of the biggest challenges humanity is facing to date.

Climate change mitigation goals

As part of the European Green Deal, the EU Commission is raising its emission reduction target to at least 55% by 2030, compared to 1990. Countries like the UK will phase out new petrol and diesel cars by 2030. The Biden administration in the U.S. set out a plan for a clean energy revolution and will support the deployment of more than 550,000 new public charging stations by 2030. China plans to phase out conventional gasoline cars by 2035.

EV market forecast

As a result, the global EV market is forecast to reach 179 Mio units by 2030. This means the demand in reliable EV charging infrastructure will rise dramatically over the coming years.

V2G Clarity's mission

The very purpose of V2G Clarity's existence is to accelerate the world's transition to a future-proof, user-friendly, and secure EV charging infrastructure. We put in the hard work to help create international standards and tackle the complexity of smart EV charging so our customers can serve EV drivers with a great user-experience. Why? Because we thrive on innovation and building a better quality of life with less noise and air pollution.

The challenge for the EV charger industry

Today, the EV charging ecosystem is facing numerous problems aside from an insufficient amount of charging infrastructure, which leave the end customers frustrated

Lack of reliability

Malfunctioning implementation and half-baked testing of essential communication protocols as well as outdated software. This leads to communication errors between EVs, charging stations, and cloud-based charging station management systems (CSMS).

Lack of real-time POI data

No up-to-date information about point of interest (POI) data telling us whether or not a charger is available or how fast you can charge your car at a specific charging station. This is essential information for both EV drivers and charge point operators (CPOs).

Lack of data security

The Chaos Computer Club, Europe’s biggest hacker association, has already demonstrated how easy it is to hack a charger and mess with your charging bill. With a rising demand for chargers, we need to enforce data security to protect this critical infrastructure from hackers.

Lack of user-friendliness

A seamless charging experience is key to a quick uptake of EVs. Yet, aside from unreliable chargers, users are still facing the challenge of having to manage several RFID cards or smart phone apps from a variety of mobility service providers, simply to start a charging session.

Introducing JOSEV
The flexible EV charger operating system

We’ll challenge the status quo by creating JOSEV, a flexible Joint Operating System for EV chargers. With JOSEV, we free manufacturers from the complexity that comes with implementing and testing future-proof communication standards like ISO 15118 and OCPP 2.0.1. Our easy-to-use interface for third-party modules allows manufacturers to focus on their USPs and design reliable and user-friendly charging stations for EV drivers.

JOSEV has the potential to become a gold standard for an EV charger OS.

josev Architectural model

JOSEV key benefits

Turn-key solution with focus on interoperability

You can integrate JOSEV into your hardware with next to no cost or effort. We'll take care of ISO 15118 and OCPP conformance testing as part of our long-term support. No hardware lock-in as we’ll support major hardware platforms using Yocto-based Linux builds.

Secure and regular OTA updates

No effort for keeping the ISO 15118 and OCPP software stacks up to date. Our incremental over-the-air (OTA) updates will go hand-in-hand with conformance and interoperability tests and also guarantee a secure boot to ensure that your device is booting the correct and trusted software.

Significant cost savings

We estimate the cost to build a system like JOSEV from scratch at around 1.3 Mio EUR. The early investment in JOSEV will bring significant savings and reduction of risks for your in-house development and testing – so you can focus on your core business and USPs.

Calibration law compliant

The German calibration law (“Eichrecht”) regulations define how to facilitate a transparent and tamper-proof billing process (learn more about this topic in our knowledge base). We’ll make sure that JOSEV fully complies with these regulations.

Future-proof and ready for tenders

ISO 15118 is required by more and more tenders worldwide, and so is OCPP 2.0.1. A charging station manufacturer who does not keep up with this development will inevitably lose significant market share. We want to enable you by taking away this complexity.

Dual-license development

ISO 15118 will be dual-licensed under commercial and open source licenses. The commercial license gives you the full rights to create and distribute software based on our ISO 15118 modules on your own terms without any open source license obligations. With the commercial license you also have access to the official V2G Clarity Support and close strategic relationship with us to make sure your development goals are met.

Strong data security

Both ISO 15118 and OCPP 2.0.1 support digitally signed messages and encrypted data transmission with Transport Layer Security (TLS) 1.2 and higher and strong cipher suites. We’ll go even a step further and make sure that all of JOSEV undergoes a security audit.


JOSEV is flexible and can integrate new innovative ideas. Do you want to add your own module for OCPP 1.6, maybe a smart load balancer, or for controlling the user interface on the charger’s display? We’ll make sure to provide the easy-to-use interface you need.

ISO 15118 key benefits

One standard for all EVs

ISO 15118 is part of the Combined Charging System (CCS), which is becoming the globally dominant EV standard for all kinds of EVs, be it motor bikes, cars, trucks and buses, or even ships and airplanes. The Porsche Taycan and Audi e-tron are the first EVs to support it.

User-friendly Plug & Charge

Simply plug in the cable into the EV and charger and the EV will automatically identify itself to the charger, on behalf of the driver, to recharge its battery. Opening an app to scan a QR code or finding that easy-to-lose RFID card is a thing of the past with Plug & Charge .

Strong data security

The Plug & Charge feature enforces strong security on both transport layer with TLS 1.2 (and higher) and application layer with digital XML-based signatures and X.509 certificates. This ensures confidentiality, data integrity, and authenticity – the three pillars of data security.

Smart charging & vehicle-to-grid (V2G)

With V2G, the EV can do so much more than drive you from A to B. The car can turn into a power bank to temporarily store clean energy and power your home, or together with a multitude of other EVs create a virtual power plant to help stabilize the grid when needed.

OCPP 2.0.1 key benefits

Built-in ISO 15118 support

OCPP 2.0.1 is the first version that comes with a native support for ISO 15118-2, including smart charging and Plug & Charge. OCPP 2.1 will also support ISO 15118-20’s V2G features for bidirectional charging (both standards are expected to be published late 2021).

Self-discovery of charger capabilities

The new Device Model allows a plug-and-play installation of a charging station. It can automatically fully describe its layout and capabilities to the cloud-based charging station management system (CSMS), which allows the CSMS to read and control any component remotely.


Automated discoverability becomes even more important with the large number of OCPP 2.0.1. features, some of which may not be supported by every charger. One can pick from the wide set of standardised features and easily extend a charger's functionality with OCPP 2.0.1.

Extensive monitoring

Define monitors on a charger’s components that notify the CSMS when a threshold is exceeded (e.g. temperature sensor) or a value changes by more than a predefined amount. It’s also possible to do periodic monitoring of values all the time or only during a transaction.

Brought to you by experts

We are determined to build a business with a lasting, sustainable impact on this world. We do so by helping you tackle the complexity of smart EV charging so you can serve your customers with a great user-experience. Our team consists of talented engineers with decades of experience in shaping e-mobility standards and building scalable, reliable, and user-friendly software – and we teamed up with established industry partners like in-tech and comemso.

Dr. Marc Mültin

Founder & Director


Dr. Mültin is a recognized e-mobility expert with over a decade in the field. He co-authored ISO 15118-2, ISO 15118-20, and OCPP 2.0.1. He also developed RISE V2G, the widely used and intensively tested open-source implementation of ISO 15118-2. Through his ISO 15118 Manual, training sessions, and online courses he helps companies across the globe to properly implement ISO 15118’s Plug & Charge feature. He has completely dedicated his professional life to remove technical barriers for the EV charging industry and help accelerate EV uptake across the globe.

Tawfiq Oladoja

Tech Lead Frontend


Mr Oladoja has over 10 years’ experience in building and managing engineering teams to develop applications that are stable, secure, fast, and scalable, with great user experience. He has served as Head of Engineering, Tech Lead, and Full Stack Developer at various companies and received his degree in Business Information Technology.

Miguel Aveiro

Tech Lead Backend


With 10+ years' experience, Mr Aveiro has led the full development lifecycle of several projects and has worked on various parts of the development stack. His work includes designing hardware, embedded software, full-stack applications, and DevOps. He knows multiple programming languages and has served as Senior Software Engineer in multiple companies. He studied Control and Automation Engineering.

Enora Thépaut

UX/Ui designer


Ms Thépaut is a UX and Ui designer with 12 years' experience designing B2B/C. Her approach leans on the principles of Human Centred Design, focussing on understanding users through observation, interviews, and testing. Enora has collaborated with behavioural scientists on safety, D&I and recruitment campaigns for large engineering companies. She holds a design philosophy postgraduate degree from the Sorbonne.

Stephan Santhanam

Senior Product Manager


With over 10 years’ experience, Mr. Santhanam has managed product lifecycles from concept to launch, including Jaguar sports cars projects (up to £95m investment). At M-Kopa Solar he was a Senior Product Manager for Pay-as-you-go Solar home appliances for customers in Kenya, Uganda, and Nigeria. Stephan has a Postgraduate certificate in Sustainable Business from The University of Cambridge.

Sania Saleh

digital designer


With over 6 years experience, Ms Saleh’s work spans corporate and consumer sectors with a heavy focus on user centred, digital design. She has worked as the design lead for a number of FTSE 500 companies to date. Her systematic approach, knowledge of front-end languages and understanding of moving-image informs her work in interactive design. Graduating at the top of her cohort, Ms Saleh holds a First Class Honours from Loughborough University.

Franc Buve



Mr Buve holds a Master’s degree in computer science from Technical University of Delft. He has over 25 years of experience in software engineering and has been the software architect of two major charging station management systems. He is also the original author of the OCPP specification and is still heavily involved in further development of OCPP as technical editor for the Open Charge Alliance. He played a major role in adding ISO 15118-2 support in OCPP 2.0.1 and is now leading the task group to provide V2X in OCPP with ISO 15118-20.

(To be Announced Soon)

EV Charging Protocol Architect


A software architect with many years of experience in EV charging related software and protocol development. He has been involved in projects for numerous e-mobility service providers (EMSPs) and charge point operators (CPOs) around the world.

(Hiring Process Ongoing)

Senior Frontend & Backend Engineers


We're currently looking for a Senior Frontend Engineer (React) and a Senior Backend Engineer (embedded & server, Python) to join our great team in London. If you want to help us build JOSEV and other related products, then please reach out to Marc, our Founder and CEO, and send him your CV.

Our journey ahead

November 18, 2020

Launch of crowdfunding campaign

MAY 2021

OCPP 2.0.1 for charging station and CSMS (with TaaS release)

July 2021

ISO 15118-2 and ISO 15118-3 for EV and charging station

October 2021

OCPP 2.1 for charging station and CSMS (if published in time)

November 2021

ISO 15118-20 for EV and charging station (JOSEV is complete)

Our investment request and offering

raised 90,000€ out of GOAL 240,000€
3 backers

In return for an early investment we are offering significant discounts on the licence, which allows you to use the technology on all your AC and DC chargers / communication controllers. The earlier you commit to funding, the bigger the discount. Early-stage funding will also give you access to beta versions of JOSEV and an opportunity to shape the final product to suit your requirements.

What backers get with JOSEV:

ISO 15118-2 commercial license
ISO 15118-3 with SLAC protocol commercial license
ISO 15118-20 with Vehicle-to-Grid (V2G) commercial license
TLS (Transport Layer Security) and user-friendly Plug & Charge
OCPP 2.0.1 commercial license
Integration support with your hardware and software platform
Experts' support to help you reach your development goals with JOSEV

We value a strong relationship with our customers and offer a long-term support as part of our yearly maintenance fee. There are also bundles available in case you don't need the full JOSEV package. Get in touch for more details.

One-off sales price
(without discount)


minimum down payment


backed by

A big Dutch charger


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18 November —  2 December


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Available payment plans for JOSEV

With your initial down payment, you can choose between a one-off payment and a 12-months or 24-months payment plan. The earlier you invest, the higher the discount. We’ve prepared a calculation model you can adapt to your specific situation. Simply change the values below to find out how cost-effective JOSEV will be for your company. The JOSEV price includes the yearly maintenance fee.

AC charging station






Charging station units (sales forecast per year)

Annual growth rate (multiplier)





Unit price (3% cost decline per year assumed)





Total manufacturer revenues






JOSEV price per charger, incl. yearly maintenance






JOSEV percentage of sales price






 kWhs needed for CPO to amortise JOSEV price






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Custom bundles

For a bundle tailored to the specific needs of your company please get in touch with us for a custom quote.

Get in touch

For more information, please reach out to:

Marc Mültin

Founder & director