Mobility Suisse - Fully electric car sharing by 2030
Electric vehicles are the future – this is also the view of car sharing provider Mobility: by 2030 at the latest, its entire fleet of 3000 vehicles will be electric. What is good for the environment can bring challenges in electricity consumption and grid stability. In the future, however, according to the experts, this mobility should be even more than just shared as in car sharing: electrically bidirectional and thus grid-friendly. To put this technology on the road, the V2X Suisse project was launched.
Joining forces to find solutions
The necessary players such as Mobility providers (Mobility), car provider (Honda R&D Europe and Honda Motor Europe), soft-ware developers (sun2wheel), charging point developers (EVTEC), aggregators (tiko), flexibility buyers and the scientific community (novatlantis in cooperation with ETH) are working hand-in-hand. “By working together, we will waste no time in making bidirectional EV charging a reality and thus gain much-needed in-sights,” explains Marco Piffaretti, V2X Suisse project manager and electromobility expert at Mobility. He is alluding to the fact that Switzerland currently has very little practical experience when it comes to the technical, regulatory and organisational challenges of bidirectional charging. “We are pioneering the project with our partners with the aim of delivering results designed to boost this technology in Switzerland and beyond.” The project is supported by the pilot and demonstration programme of the Swiss Federal Office of Energy (SFOE).
Test with Mobility electric cars
The collective preparations will run until September 2022, after which 50 Honda e EVs will be deployed for a year at around 40 Mobility stations across Switzerland. This will be the first time that bidirectional EV charging is used across the board in people’s everyday mobility, allowing it to be tested in different settings, from rural to urban.
Vehicle fleets as an energy reservoir
The prospects look promising: a Mobility EV plugged into a bidirectional charging station can feed up to 20 kilowatts of power back into the grid. This would amount to 60 megawatts across Mobility’s entire car-sharing fleet – more than the Peccia pumped-storage power plant in Ticino, for example.
Grid stability avoids follow-up costs
The prospects look promising: a Mobility EV plugged into a bidirectional charging station can feed up to 20 kilowatts of power back into the grid. This would amount to 60 megawatts across Mobility’s entire car-sharing fleet – more than the Peccia pumped-storage power plant in Ticino, for example. This electrical regulating power will help stabilise the grid, minimise bottlenecks in the distribution grid, and avoid, reduce or delay the need for expensive grid expansions. Piffaretti sounds confident: “Electromobility of the future is shared, bidirectional and grid-serving.” V2X Suisse will be setting a worldwide first by deploying the CCS combined charging system, the international plug standard for direct current (also used for fast charging).
Ambitious goals till 2023
V2X Suisse is setting itself a high benchmark until the project is completed at the end of 2023: firstly, it will be exploring how this technology can help stabilise the electricity grid and how charging points with photovoltaic arrays can optimise their self consumption. Secondly, it will be aiming to investigate the business potential of bidirectional charging electric vehicles in Switzerland. And thirdly, it will test the competition between the potential flexibility buyers (Swissgrid, distribution grid operators, and self-consumption associations).
«V2X Suisse» stands for
V2X Suisse will operate across Switzerland and thus under different conditions. Around 40 charging points allowing up to 20 kW to flow bidirectionally are to receive a total of 50 Honda e EVs operated by Mobility. Two types of charging scenarios will be trialled: dual bidirectional DC charging points developed specifically for this project by EVTEC featuring CCS combined charging plugs, and single bidirectional Honda Power Manager DC charging points, also with CCS plugs. Both are equipped with ripple control receivers for the distribution grid operators as well as a digital interface. This requires the development of a cloud-to-cloud IT platform to manage the available power for each Mobility EV in quarter-hour cycles; this will offer, allocate, release, directly regulate if necessary and calculate (for billing purposes) the flow of electricity. This cloud-to-cloud solution developed by sun2wheel connects the availability inputs of Mobility bookings with the tiko aggregator relevant for Swissgrid.