Vehicle to Business
Smart charging at businesses and offices is a unique opportunity for smart charging and V2X services due to the potential to centrally control the charging, long stationary time, and already high uptakes of EVs in company fleets. Smart charging could reduce costs through self-consumption and demand charge reduction, which can increase the use of locally generated renewable energy and lowers the peak loads on the grid.
There are four uses cases in this cluster:
1 - Debrecen & Budapest
Station-based B2B car-sharing with demand side management for commercial real estate tenant companies
Context
Through this use case, two office locations of DBH will be equipped with a full electric car-sharing service based on a station-based car-sharing business model. The service will be provided to tenants as part of the serviced office service package. This would be the first 100% electric station-based corporate car-sharing service in Hungary which focuses on office and industrial park rental companies.
Specifics
Two offices will be supplied with office-carsharing EVs. Existing charging points will be upgraded to accommodate the pilot, car-sharing models and a building energy management system will work together.
4 EVs with V2X capable chargers with a local RE generation
Objectives
- Identify optimal business models and a positive business case for commercial office EV car-sharing services.
- Set up and experiment with demand side load management smart charging feature, covering the integration between the vehicle, charging point, building energy management system, the grid operator and more, in order to find a blueprint for a suitable technical solution for commercial office building environments.
- Cost reduction through smart charging integrated with the building EMS and local renewable energy generation.
- Increase use of the car sharing program by determining what influences mobility mode choice.
Use case lead: Serviced Office Belbuda (DBH Group)
Visualisation System Architecture
2 - Budapest
Future-proof energy management and V2G pilot at Duna Auto, a multi-brand car dealership in Budapest
Context
At Duna Auto, one of the largest multi-brand car dealerships in Budapest, V1G and V2G charge points will be installed for customers and staff. The V2G ones will be only available for compliant cars.
Through a newly designed internal electricity and communication network at the dealership and repair center, the use case will demonstrate how a system which includes a complex PV system (400 kWp), a cluster of smart charging stations and an industrial-scale storage system can maximise renewable energy usage and decrease dependency on the grid. The battery capacities of the vehicles parked at the site act as buffers and balancers of the grid too.
There are already over 30 charging points in operation (including AC and DC technologies) and an additional charging station will be installed during the autumn 2023. A V2G compliant EV will be used in the demonstrations in 2024.
Specifics
32 chargers (2 V2X capable) serving dealership’s employees and visitors (1.000 visitors per day)
Objectives
- Increase use of generated renewable energy (i.e. onsite solar PV) through self-consumption, demand charge reduction, and energy storage.
- Cost reduction through increased use of renewable energy and reduced peak loads.
- Improve power system quality through increased flexibility from the V2G service.
Visualisation System Architecture
3 - Toulouse
Smart charging in a car dealer’s depot
Context
The use case will take place at a car park depot in Toulouse (FR) where cars are stored, with some services including EV charging, before they are delivered. They currently have one V1G charge point which is used by the staff to charge EVs at about 50% SOC before being delivered (current average is about 10 EVs per day). There are no smart charging strategies that have been applied which may become an issue with the quick uptake of EVs. The goal of the use case is to understand how much power increase will be needed for these types of sites and simulate scalability of smart charging.
The site is already equipped with rooftop solar PV. There is a need to analyse the data for electricity consumption of the car park, charging sessions and PV site before defining smart charging scenarios or local peak reduction, tariffs optimisation and local PV synchronisation.
Specifics
From 30 to 50 EVs need to be charged at about 50% SOC every day for delivery
Objectives
- Prevent further grid reinforcements by limiting the needed increase in power capacity.
- Finding the optimal charging strategy for self-consumption (through simulation).
Use case lead: Enedis
Visualisation System Architecture
4 - Gothenburg
V2G chargers at office and residential buildings
Context
At Chalmers University of Technology in Gothenburg (SE), two chargers will be tested:
An AC bidirectional charger will be installed at the HSB Living Lab, a smart residential building equipped with rooftop solar PV, stationary battery energy storage, and some controllable loads. The charge station will be installed during the autumn 2023 and a V2G compliant EV from Polestar will be used in the demonstrations.
A V2G-ready DC charge station will be installed at Chalmers campus testbed which is operated by Akademiska hus, the owner of the buildings and energy infrastructure on the campus. The testbed enables researchers to perform real-life demonstrations in a controlled environment. Due to the lack of public V2G compatible EVs, the use case will foremost focus on demonstrating the V2G functionality using the Polestar 2 EV and private V2G charging.
Specifics
1 public V2G charger (DC) and 1 private V2G charger (AC), total of 2 V2X capable cars
Objectives
- Increase the self-consumption of onsite solar PV through V1G and V2G technology. For V1G CP, this is achieved by charging the EV when there is excessive PV production. For V2G, it is done by charging and discharging an EV when required in the building at peak time.
- Use of ISO15118-20. The demonstrations will be conducted following a modification of the ISO standard 15118-2 and later using a full integration of the 15118-20 standard for the V2G communication.
- Increase grid flexibility by delivering power back to the DSO via V2G capabilities.
- Reduce costs via peak shaving and demand charge reduction.
- Estimate the degradation of EVs’ batteries in discharging through V2G technology.
Use case lead: Chalmers University of Technology
Visualisation System Architecture
