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The Car Is a Power Plant. You Just Forgot to Plug In.
"The EV customer was sold a car. They were not told they owned a dispatchable energy asset that sits idle 95% of the time, capable of powering a home, stabilising a grid, and generating revenue while parked."
~95%
Of an EV's service life spent parked. A 60 kWh battery doing nothing.
(EY / Eurelectric "Plugging into potential", March 2025)
(EY / Eurelectric "Plugging into potential", March 2025)
€4B
Annual savings for European grid operators if V2G scales.
(EY / Eurelectric "Plugging into potential", March 2025)
(EY / Eurelectric "Plugging into potential", March 2025)
The Fusion Equation
Performance × Responsibility = Value
Performance
Grid Revenue
Responsibility
Energy Resilience
"We have deliberately equipped the Ford Explorer and our new Capri with the option of bidirectional charging because we consider this technology to be an important pillar of future-proof energy supply. The large batteries of our modern electric models are ideal as buffer storage." — Oliver Adrian, Head of European Charging & Energy Strategy, Ford Model e, January 2025
The core tension
The EV is already a dispatchable energy asset: 60 kWh parked 95% of the time, capable of powering a home, balancing a grid, generating revenue. The gap between what was sold and what it can do is the commercial opportunity of the next decade.
The battery does not change. The contract determines what it does when parked.
The analytical depth
The regulator's dilemma: AFIR mandates ISO 15118-20 bidirectional capability from January 2027. But no EU framework yet settles who captures the value the EV injects into the grid.
The automaker's dilemma: Ford, Renault, BMW, BYD, Volvo activated bidirectional hardware in 2024 to 2026. Most EVs on the road remain unidirectional: by contract, not by physics.
The grid operator's dilemma: 114 TWh of EV flexibility in Europe by 2030, enough to power 30 million homes. Unmanaged charging is already causing peak-hour congestion.
The customer's dilemma: the 60 kWh battery idle 95% of the time could cut annual ownership cost by 20%, up to €2,900/yr for a German SUV owner. The value exists.
France, October 2024: world's first commercial V2G. Renault 5 + Mobilize: up to €600/yr. Germany abolished the double grid fee from 2026. The economics changed permanently.
Renault / Mobilize
World's First Commercial V2G · France October 2024 · €0 Charging Target
€600
Average annual savings for Renault 5 E-Tech Electric customers enrolled in Mobilize V2G (France). COTY 2025 and best-selling EV in France. The only mass-market vehicle commercially deployed with V2G from launch (October 2024). Customers plugging in 16 hours/day reduce effective charging cost to zero.
(Mobilize official, 2025)
Octopus Energy's residential V2G scheme in the UK bundles a compatible EV (BYD Dolphin in partnership with Zaptec and Octopus), a bidirectional wallbox, and a dynamic electricity tariff that pays the customer for every kWh exported to the grid. Participating households earn up to £500 per year in grid service revenue. Octopus aggregates thousands of vehicles into a virtual power plant and trades the flexibility on wholesale and ancillary services markets, earning margin on the spread between what it pays the customer and what the grid pays for the service. The customer gets cheaper energy. Octopus gets a grid services revenue line. The OEM gets a product differentiator. The architecture works because the value chain is aligned.
"The Renault 5 V2G programme is the proof of concept the industry needed. A mass-market vehicle, commercially available, with a bidirectional wallbox, a dynamic electricity contract, and a flexibility trading platform, all bundled at point of sale. The customer's car earns money while parked. The grid receives a dispatchable asset. The OEM generates recurring energy margin. This is not a pilot. It is the commercial architecture for the next decade of EV value creation."
This is not a pilot. It is the commercial architecture for the next decade of EV value creation.
Performance
Grid Revenue
The EV fleet enrolled in V2G is simultaneously a transportation asset and a revenue-generating distributed energy resource. At 20% TCO reduction for family car owners (EY / Eurelectric, 2025), V2G transforms the financial case for EV adoption from cost mitigation to value generation. For fleet operators, the economics are even stronger: predictable parking windows, centralised depot infrastructure, and aggregated scale create grid services revenue that can offset the entire energy cost of the fleet. The car stops being a cost centre. It becomes an asset that earns.
Responsibility
Energy Resilience
V2H (vehicle-to-home) is V2G's residential face: a fully charged 60 kWh EV battery can power an average European household for three to five days during a grid outage. In markets with increasing extreme weather events, this is not a feature. It is infrastructure. The social responsibility dimension is equally structural: an energy system that stores flexibility in millions of distributed private batteries is intrinsically more resilient, less dependent on centralised generation, and less vulnerable to single points of failure than one that relies on peaker plants burning gas for demand spikes that last four hours.
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Unresolved tensions
Who captures the value, and who bears the battery degradation risk?
Will the value be captured by the customer, the aggregator, or the grid operator?
Can the regulatory framework move fast enough to prevent a two-speed market?
By Fabrice Macarty
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The power plant is already in your driveway. The grid is already paying for flexibility. The only thing missing is your contract.
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