Take a look at the details of our exciting eMobility project!

Martyna Tonia

At Solidstudio, we had some great opportunities to collaborate with numerous - small and big - eMobility companies (and not only). Some of the finished projects can be found 

However, it’s high time we start sharing exciting news about projects and great partnerships that are taking place at the moment.

With that in mind, we are more than happy to announce that Solidstudio has partnered with Zeemcoin - a startup from Malaga, Spain.

Zeemcoin took on board a daring task of creating 

the first tokenized platform in the eMobility industry.

 technology making it more efficient and transparent.

This year it is intended that they also launch an app designed to connect EV chargers across Europe using roaming. Through an implemented Gamification Module, the app will contribute to collecting the Big Data in real-time which can be later used to improve the charging infrastructure for EV drivers in EU countries.

The collaboration will take place in the form of a s

 The big goal is to solve any quality issues with POI data (Point-of- Interest: data regarding geographical locations) as well as prop up the technical aspects with our extensive knowledge on both tech and eMobility sides.

The partnership will cover all kinds of solutions: from software upgrades, through app development to UX design.

Given the dynamic nature of the eMobility industry and foreseeable changes it’s bound to witness, we are thrilled to be part of such an undertaking.

To learn more about Zeemcoin and their vision, visit their website 

Get our comprehensive PDF packed with knowledge on eRoaming, hubs and protocols!

Piotr Majcher

Please note, this is just the introductory part. The full piece can be downloaded for free from the box on the right side of the page.

Certainly, roaming is something known to everyone at this point. However, what that has to do with eMobility?

Being a broad term for services allowing for connection outside of the usual network, roaming turns out to be an on-point solution for EV charging. With many players in the eMobility game (i.e. Charging Point Operators, eMobility Service Providers), some type of a connector is a must. Here’s exactly where eRoaming comes into play allowing for multi-dimensional connection between operators and EV drivers.

In short, eRoaming can be established via the use of hubs and protocols. A hub here can be an open platform which, after subscribing, can be used by many operators, who operate on common terms. This all happens in such a way that a certain charging pool introduced to a common hub can then be easily used by clients (EV drivers) of different providers. Such a solution allows electric vehicle users to charge their car across cities/countries with limited hussle.

In order to facilitate such a solution, the hubs developed their own open protocols, which are essentially responsible for the connection. They also define the functionalities of each eRoaming platform.

Amongst the existing hubs, we can differentiate three major ones. They all come with their own open standards and unify hundreds of CPOs and EMPs as well as millions of EV drivers.

The three biggest hubs and their protocols are:

(eMobility Inter-Operation Protocol - eMIP)

Apart from the proprietary protocols coming from hubs, it’s worth mentioning that there's also an independent one - 

Open Charge Point Interface Protocol (OCPI)

. It allows for eRoaming between the hubs as well as peer-to-peer connection.

To learn more about eRoaming, hubs & protocols, their importance and functionality as well as the future of eMobility - take a look at our exclusive paper covering all that needs to be covered on the topic!

eRoaming Hubs explained

Download our comprehensive PDF and learn about the pricing structures in e-mobility

Although it would seem rather straightforward, the pricing system within the EV charging environment extends further than just to the payments made by electric vehicles right after they charge their car.

Being such an interconnected network of mutual dependencies between numerous involved parties, e-mobility charging services require various levels of settlements.


It must be noted that it takes a few units to build up and manage a charging network. From 

, which manufacture the hardware side of required components (connectors, chargers, cables, etc), through 

, which are responsible for the backend management, all the way to 

, which determine the final user (here: EV driver) experience, there is a whole network of reliabilities.

Put simply and briefly, CPO’s are to establish billing connections with both EVSE and eMSP’s, in order to put the entire charging formation in place, while ensuring all parties receive transparent information and clear instructions.

To facilitate it, there are multiple types of pricings and contracts, some of which allow for complex, dynamic price models. Such undertaking is required so that eMSP’s can shape their end-users pricing often based on certain conditions, leaving the rates flexible.


Interoperability - the core of proper functioning

It should go without saying, that managing a pool of charging stations - oftentimes distributed across entire countries/regions - is not an easy task to handle and can only be achieved via advanced levels of interoperability and clear, unified procedures.

Open Standards are the chief example of how this can be achieved and maintained. Through the utilization of API’s like OICP the flow of information can be sustained in a transparent manner. This allows for a seamless communication and can facilitate the management of a vast majority of proceedings remotely, which comes in handy while developing a state-wide network, especially when there are numerous parties involved.


Knowing the behind-the-scenes nuances and arrangements, we prepared a comprehensive paper portraying the pricing structure within the e-mobility industry. Those who are willing to learn more about tariffs within charging services, should definitely find it useful.

Download our free paper and broaden your horizons with some great knowledge!

E-mobility tariffs. How is the pricing structured within the industry?

Trust is a must. Especially in running e-mobility business. Here is why.

Having spent over two years developing various components for one of our e-mobility partners I want to share some insights on how to cope with challenges, what to expect from IT partners when developing e-mobility components and how testing various approaches can lead you to some of the breakthroughs.

Before you start, whether you are an aspiring Charge Point Operator or e-Mobility Service Provider, here you can find some valid questions, worth answering: Is there a ready-to-apply business model for long-term prosperity in the e-mobility segment? What return could be expected for now and in the future? What in-house skills are needed and what other partners require for revenue growth? Could technology and data analytics enable the business to provide ‘smart’ solutions? If yes, how? Where is the industry heading to and what are long-term goals?

What we face now, in the era of uncertainty, is another ‘revolution’ dictated by the exhaustion of fossil fuel resources, environmental pollution, and hence the transition to green energy. The EV market, especially in Europe, is growing fast and we face the increasing need for accessible, charging infrastructure, green energy demand, and a change in consumers’ behavior. With a rapidly rising demand for investment, we have a common ground - require a change in consumer habits. Even with rapid-charging technology (50kW+), charge time takes 20 to 30 minutes to reach 80% of battery capacity. But a well-known benchmark - refueling petrol or diesel experience is still out of reach. It seems that there is still a long way to go to achieve full flow, yet without constant development and improvement of the accessible infrastructure, we won't be able to move forward. Providing consumers the multitasking opportunity for rapid EV charging, whether combined with retail sites or bespoke charging 'lounges', together with a shift from a top-up (as opposed to refuel) mentality will be necessary to aid mass adoption.

Below you can find some thoughts on obstacles you may find while developing an e-mobility platform, what to take into consideration while creating a workflow, and what to expect when you start your venture into unexplored areas.

Creating a valid data model from the beginning will be a huge time-saver

Late changes to the data model are time-consuming. MVP or initial variants of the software cover all the basics. When the system does not require a sophisticated model of the charging infrastructure it may be enough to shape the whole charge point as a flat structure. Upon this simple model, more features can be built, till your range grows, and a need to open the platform using some open standard comes up. This action requires mapping development between the internal model and the one introduced by the standard. If the existing model does not support concepts (e.g. Location and Evse) and does not follow general standards, when it comes to the format of IDs, it might demand plenty of work to perform the efficient mapping.

While working for one of our partners, mapping their existing codebase to make it available for open standards, for a team of developers took several months. In fact, if the model would match the standard from the beginning, the integration would require just a simple action, and full integration would be possible within a few weeks.

Lesson learned from this experience: The time for full integration can be significantly boosted (reducing a few months of integration to a few weeks) thanks to the implementation of a ready-made code sequence linking the standard and the platform. Once the standard is properly applied, further action will become smooth and easy.

Creating an efficient architecture of the system from the start prevents many bad decisions

Some aspects of system architecture are specific to the domain. For example:

deciding which processes are synchronous and which are asynchronous

the decision of whether or not some data must be immutable

Understanding incremental improvements and having in mind that not every single aspect can be predicted is crucial. However, knowing the domain certain aspects can be included early in the design process.

Lesson learned from this experience: General concepts, but taking into account these limitations from the very beginning helps to avoid making wrong decisions when designing and developing the e-mobility platform.

Knowing the details of adopted standards is the shortest way to success

OCPI is defined as an open standard. In theory, everyone ought to introduce this standard in the same way.

Lesson learned from this experience: OCPI is not always the norm. Hub Gireve, for example, extends this standard. Some concepts exist and are not part of the OCPI documentation. Some OCPI partners require a certain sequence of specific actions that are actually not part of the standard. It is worth knowing this upfront when designing the CPO/eMSP end system.

The domain knowledge provides you with solving individual cases

Having the domain knowledge within the development team allows participating in specific direct business conversations about e-mobility. Becoming familiar with general concepts, e-mobility background (CPO, eMSP/EMP, EVSE, eMI3 ID, OCPI, OICP, OCPP), ubiquitous language, different market approaches (public/private/fleet charge points), we can immediately proceed directly with the specific business issues that are to be done, rather than technical details (as a reliable tech partner we already know them).

Lesson learned from this experience: We have learned that getting to know a specific area takes time, but once explored, it allows us to catch common parts. The observations turned into concrete e-mobility solutions, thus are an improvement for the future. Combining domain knowledge with high-level technical skills provides quick integration and unlocks business processes.

It might sound a bit cliche, but without having great, skilled, and curious minds on board I cannot say that the progress we witnessed would be possible.

Lesson learned from this experience: In addition to specific technical skills, in such projects where many questions are asked and actions require a constant search for efficient e-mobility solutions, the spirit of a truly matched team of individuals appears.

Knowing the challenges from the scratch, making observations, and drawing conclusions for the future on how we could boost integration, we have spent a couple of weeks developing ready-to-integrate components for Open Standards. Full e-roaming is possible to achieve faster.

 – The component being an Anti Corruption Layer between any CPO/eMSP system and any OCPI partner (hub like Gireve and p2p partners like other CPOs and eMSPs). The component has the whole OCPI registration process modeled with the token-based security mechanism. It maps all OCPI calls to the internal backend API (this part is open for modification for the concrete backend system).

 – The component and test suite allowing to execute e2e tests of the platform using OCPI protocol. Testing OCPI allows a complete test of bidirectional processes that are part of OCPI.

 – The component is an OCPP server being able to connect to the charge point using OCPP (2.0.1) protocol. It is a proxy for the whole communication between the charge point and the CPO backend system.

 – The component is a software Charge Point that allows e2e testing and monitoring of the CPO platform.

Soon our work will be done with this extra e-mobility component:

When life gives you lemons… it is up to you whether you choose to make a lemonade or order the lobster tail. If you have any concerns while developing your e-mobility platform, need advice, or wonder which directions to take when setting up your next goals feel free to reach out. Here you can find some experience and knowledge, as well as ready-to-implement e-mobility solutions.

Solidstudio news! Strategic partnership with Zeemcoin.

19 MAY 2022 • 3 MIN READ

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Solidstudio x Zeemcoin

The Partnership

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