Key Takeaways
|
What is vehicle-to-everything (V2X)?
V2X, meaning vehicle-to-everything, is the overarching term for transferring the electricity stored in electric vehicle (EV) batteries to the grid, buildings, houses, and other energy-consuming destinations. V2X requires bi-directional energy flow from the charger to the vehicle and bi- or unidirectional flow from the charger to the destination, depending on the use case. Although there have been a number of successful V2X pilots, it is still considered an emerging technology.
How are V2G, V2B, V2H, V2V, V2L and V2H Different from V2X?
These terms designate the different destinations for the electricity drawn from the connected EV battery. The use cases are:
- V2G: Vehicle-to-grid, where the power grid uses stored EV electricity to balance loads during high-demand periods, avoiding the need to increase generation capacity to meet increased demand to power EVs. It was the first use case for V2X and the terms are often used interchangeably.
- V2B: Vehicle-to-building transfers power from parked EVs to the building’s power management system during peak load times or power outages while ensuring that the EVs will have sufficient charge at the end of the workday.
- V2H: Vehicle-to-home works like V2B, but at a much smaller scale, to provide electricity to the home for up to several days during power outages.
- V2V: Vehicle-to-vehicle is a way to transfer power between EVs, including cars, trucks, buses, scooters, and electric bicycles.
- V2L: Vehicle-to-load means that using a DC-to-AC inverter and AC power outlets, the EV battery can power plug-in electric devices, equipment, and appliances.
- V2F: Vehicle-to-farm encompasses V2H and V2L types of applications in a farm environment.
How is V2X different from smart charging?
EV smart charging ensures the safe delivery of power to EVs without compromising on delivering electricity to offices, campuses, commercial locations, and homes. It is a software-based function that uses intelligence and communications between the charger, the EV, and the charging operator to balance demand placed on the energy grid by slowing or disabling EV charging during peak demand periods. This helps balance the grid overall and, where available, takes advantage of flexible energy markets.
What technology is required for V2X?
V2X requires:
- vehicle enabled for V2G
- bidirectional charger
- communications link between the charger and the vehicle using V2G-compliant communications protocols ISO 15118 and OCPP 2.0.1
- smart charging control system that supports V2G
A vehicle that can support V2X can export energy from its battery to the charger without doing damage to either, and is equipped for such use. The earliest V2G-enabled EVs on the market support the CHAdeMO protocol. As other protocols commonly in use in the Americas and Europe—including ISO 15118 and OCPP 2.0.1—mature in their support of V2X, more carmakers will be comfortable adopting the technology.
Does V2X affect EV battery life?
Whether or not V2X is involved, repeatedly operating a battery at very high or very low state of charge can contribute to degradation over time. The key question is whether the additional cycling associated with V2X applications meaningfully accelerates wear.
Real-world fleet data indicates that modern EV batteries degrade gradually (averaging roughly 2% to 3% per year) and that extended, habitual exposure to extreme state-of-charge levels has a greater impact on battery health than occasional excursions outside a mid-range. When properly managed within manufacturer limits, controlled bidirectional charging does not inherently damage the battery.
| What Impacts EV Battery Life? | ||
| Factor | Why it matters | What it means for V2X |
| Prolonged charge extremes | Habitual operation near empty or full can increase wear over time | V2X should operate within defined charge limits |
| Frequent cycling | More charge and discharge cycles contribute to gradual aging | Controlled dispatch helps manage impact |
| High temperatures | Heat accelerates battery degradation | Thermal management remains important |
| High-power charging | Repeated fast charging may increase stress | Most V2X applications rely on managed power levels |
What is the value of V2X?
As transportation electrifies, the aggregated storage capacity across vehicles becomes increasingly relevant to grid flexibility, reliability, and decarbonization goals.
Here are a few ways V2X offers value:
- EVs can supply power during high-demand periods, helping reduce grid strain and limiting the need to bring additional generation online
- office buildings and campuses can use stored vehicle energy to help manage site load or respond to peak pricing events
- fleet operators can participate in grid programs that compensate for demand response or other services
- drivers may lower electricity costs by charging during off-peak hours and, where programs exist, exporting energy during higher-priced periods
- with V2H, a vehicle can power a home during a utility outage, depending on battery capacity, state of charge, and household load
- V2L enables vehicles to power tools, equipment, or small appliances directly, extending stored energy use beyond grid-connected settings
What are the barriers to V2X adoption?
Although V2X is progressing beyond pilot programs, large-scale deployment still faces technical and regulatory challenges, including:
- uneven standard implementation, as ISO 15118 and OCPP 2.0.1 adoption varies across OEMs and charger manufacturers.
- utility interconnection requirements that differ by region and impact how exported energy is approved and measured.
- evolving compensation models for grid services such as peak shaving, demand response, and ancillary markets.
- operational complexity requiring secure communications, real-time state-of-charge visibility, and coordinated dispatch to ensure grid participation does not interfere with driver mobility needs.
Driivz supports V2X
Driivz enables operators to manage bidirectional charging within an EV charging and energy management platform. The Driivz software supports ISO 15118 and OCPP 2.0.1, providing the communications foundation required for V2X. It delivers real-time visibility into charger status and vehicle state-of-charge for controlled dispatch aligned with grid signals and site constraints while preserving driver mobility. Advanced smart charging algorithms help optimize energy flow within defined battery and operational limits. By integrating charging and energy management within a single platform, Driivz supports secure, scalable deployment of V2X use cases across fleets and public charging networks.
