The Car as a Power Plant: Why Automakers Are Entering Energy Markets

As renewables flourish and grids tighten, EVs are becoming flexible energy assets. Winning automakers won’t just build electric cars. They’ll master standards, regulation, and orchestration, while generating real revenue and cost savings.

For years, the story around electric vehicles and the power grid has been framed as a looming problem: millions of new loads arriving on networks that already struggle to build new wires, manage peaks, and keep costs down. The concern is not hypothetical. Unmanaged charging can pile onto the same evening hours when households cook, heat, and stream, pushing local transformers and feeders to their limits.

At the same time, a quieter role reversal is underway. Cars sit parked far more than they drive, which makes their energy use unusually flexible. If charging, and even discharging, is scheduled around grid conditions and real driver needs, EVs can shift from “just another load” to one of the largest controllable energy resources in the system. It also explains why automakers are increasingly showing up in energy conversations, not as passive stakeholders but as platform players with real value to offer.

Renewables make flexibility the new must-have

So what’s changed? Renewables did. Wind and solar reshape grid operations in a simple but profound way: supply becomes more variable, while demand still has to be met in real time. In fossil-heavy systems, operators could largely follow demand by dispatching more generation. In renewables-heavy systems, that approach gets harder and more expensive. The grid needs demand that can move in time, consuming more when clean power is abundant and less when networks are constrained. That shift is already showing up in product roadmaps: SBD Automotive’s tracking of V2X-enabled models highlights rapid capability growth beginning in 2024 and accelerating since, with Europe seeing especially strong momentum in V2G and V2H adoption.

That shift only matters commercially if the rules let it. Flexibility has to be measured and paid for. Resource aggregators need a clear route into onboarding. Energy export needs workable grid-code compliance, and consumers need protections that make participation feel safe and low-effort.

When those pieces are in place, “flexibility” turns into something you can buy. It might be a household letting the car charge later at night, a depot briefly backing off during a local peak, or a bidirectional charger exporting power for a short window.

• Shift consumption (smart charging / V1G): move load into low-cost / high-renewables hours.

• Reduce peaks (load shaping): throttle or pause charging when networks are constrained.

• Export power (V2G): discharge for short windows where rules and hardware allow.

• Aggregate at scale (VPPs): combine thousands of small actions into a tradeable grid service.

EVs can stress the grid or smooth it

Nowhere is this more tangible than EV charging. EVs are a large draw on the grid, and the pinch point is often the distribution network, where upgrades are slow, disruptive, and expensive. A neighborhood where many drivers plug in at 6 p.m. can see a sharp local peak even if the wider system has plenty of generation. That is why managed charging moves from “nice to have” to a practical requirement for cost-effective electrification.

The upside is that most charging sessions come with slack. If a driver arrives home at 6 p.m. but does not need the car until 7 a.m., there is a wide window to choose when to consume electricity. Scale that across thousands of vehicles, and EVs start to look less like a problem to be managed and more like a lever for managing the system.

Smart Charging (V1G) first: the fastest path to value

At this point, many discussions jump straight to vehicle-to-grid (V2G), because it’s easy to picture: the car becomes a generator and exports power back to the grid. But the near-term workhorse is V1G, smart unidirectional charging. It focuses on shifting and shaping demand by delaying charging, throttling it, or lining it up with low-cost, low-carbon hours.

V1G is easier to roll out than V2G and still delivers meaningful benefits. It usually needs less specialized hardware and sidesteps many of the export-related compliance and integration issues. It also tends to be cheaper to implement, because the functionality can typically operate on existing charging infrastructure without modification, while V2G typically pulls in additional costs for bidirectional-capable hardware, installation, and approval processes. When V1G works well, it fades into the background. The car is ready when needed, the electric bill is cheaper, and the grid sees a smoother, lower-carbon load profile. In many markets, V1G is the quickest route to scale while the rest of the ecosystem catches up.

• Delay charging (start later, finish by departure time).

• Throttle charging (reduce power during local peaks).

• Follow price/cleanliness signals (charge when power is cheaper or greener).

• Respect driver constraints (minimum state-of-charge, driver preferences, and comfort needs for preconditioning).

  
  

V2G: real grid value, but only if the ecosystem is ready

This is not to downplay the value of V2G (bidirectional charging). Where markets and grid needs align, bidirectional charging can provide valuable services, from peak support to fast-acting balancing. The catch is that V2G turns the car into a power-producing device, and power-producing devices are held to grid-code obligations. The job is not simply to push electrons backwards. It is to do it safely, predictably, and on command.

That’s why interoperability and compatible standards sit at the center of V2G scale. Bidirectional charging relies on a whole chain of coordination: vehicle-to-charger communication, charger-to-backend control, and, in many markets, backend-to-utility interfaces. Standards such as ISO 15118 (including bidirectional extensions) and OCPP help align vehicle, charger, and charging network behavior, while utility-facing interfaces such as IEEE 2030.5 show up in demand response and DER coordination. In reality, “standards on paper” are not the same as interoperability in the field.

The policy layer can make or break the business case. If aggregators cannot participate, if metering and settlement are unclear, or if fees effectively penalize exporting power, programs stay stuck in pilot mode, even with great hardware.

Battery degradation is often treated as the conversation-stopper for V2G, but the reality is more nuanced. Research summarized in SBD Automotive’s work separates calendar aging (what happens simply as a battery sits over time) from cycling aging (what happens when you charge and discharge). V2X participation primarily affects cycling aging, and the impact depends heavily on how the service is operated.

In other words, degradation is not a binary yes/no problem. It is an orchestration and product-design problem: set limits, choose grid services that avoid heavy throughput, and keep the battery in healthier operating windows. When designed carefully, V2G operations may not impact battery longevity at all. Some promising research shows that V2G may even extend the life of the battery when carefully-chosen charge/discharge profiles are used.

Even with standards and regulation in place, orchestrating V1G or V2G without getting in the driver’s way can be hard. Drivers do not want to think like grid operators; they want a simple promise: “You tell us when you need the car, and we’ll handle the rest.” One bad experience, such as waking up to an unexpected low state of charge, can undo months of marketing and trust-building. Customer-first controls, clear incentives, and easy opt-out are what make participation stick.

Why automakers are entering energy markets

This is the moment automakers start to look like energy companies, or at least energy platforms. Flexibility has value, and OEMs sit on a fast-growing pool of flexible assets. By leveraging the concept of Virtual Power Plants (VPPs), automakers can let utilities, retailers, and grid operators buy flexibility through their customers’ vehicles. In that model, the vehicle becomes a connected energy resource that can support grid needs and generate revenue in return.

OEMs have a head start because they can build energy features into the vehicle and app experience, and they can use telemetry to manage risk, for example by forecasting vehicle readiness needs. But energy markets demand more than good software. They require measurement, verification, compliance, and settlement. That is why a new layer of specialists is emerging, offering orchestration services to car companies and acting as the integration layer between grid needs and customer-safe charging decisions.

Tariffs are also becoming part of the automotive value proposition. OEMs can help owners benefit from smart tariffs through predictive charging, and where available, discharging. Done well, the system charges when prices are low, eases off when prices spike, and stays within household constraints. Some brands will do this with energy partners; others will package a white-label service that makes energy optimization feel like a built-in vehicle feature rather than a separate utility product.

The wider ecosystem: fleets, CPOs, and second-life batteries

It’s not only OEMs making the move. Some of the earliest, cleanest value is emerging in fleets. Fleet operators are often more willing to engage with time-of-use tariffs and managed charging because they can centralize infrastructure, predict utilization, and measure outcomes. A depot that charges dozens of vans overnight has strong incentives to avoid the local peak, keep demand charges under control, and, where regulations permit, sell flexibility as an extra revenue stream.

Charge point operators (CPOs) are also moving beyond just selling kilowatt-hours. Battery-connected charging sites can buffer a limited grid connection behind the scenes. They charge the site battery when capacity is available and deliver power to vehicles when demand spikes. That can mean fewer upgrades, better station economics, and flexibility capacity that is available to the wider energy system, subject to local market access rules.

Automakers are also exploring battery farms that use retired (second-life) batteries. Repurposing packs can extend residual value and support renewable integration. It also creates a route into grid services that does not depend on real-time driver behavior.

The differentiator: orchestration that works in the real world

All of these emerging models run into the same question: who can orchestrate this reliably? Flexibility only becomes valuable when it can be forecast, dispatched, measured, and then proven. That means balancing grid signals (prices and constraints), technical limits (charger power, thermal conditions), and real customer needs (departure time, minimum range). It also means dealing with mixed hardware, partial standard adoption, and grid requirements that vary by region and sometimes by feeder.

• Grid needs: prices, renewable output, congestion, and grid-service dispatch signals.

• Technical limits: charger ratings, vehicle limits, thermal constraints, and site capacity.

• Human reality: departure times, minimum range expectations, and “no surprises” UX.

• Market requirements: measurement, verification, and reporting that proves delivery.

  
  

Orchestration is also a data problem. It needs timely information, such as state of charge, charger availability, and price signals, and sometimes household or depot context. At the same time, it has to respect privacy, consent, and cybersecurity requirements. Regulators and grid operators are paying close attention because distributed storage at scale cannot become a systemic risk. If the car acts like a power plant, it has to be predictable, auditable, and safe like one.

How SBD Automotive can support OEM energy strategy

For automakers, the opportunity is real, but so is the complexity. SBD Automotive supports OEMs and energy ecosystem players by turning market signals into clear product and partnership decisions, grounded in data on technology readiness, standards, and commercial models.

• Market and competitor tracking across V1G/V2G/V2H capability rollouts and facilitator ecosystems.

• Standards and regulation interpretation (e.g., interoperability implications, grid requirements, and market access considerations).

• Business model and partnership strategy for VPP participation, tariffs, and go-to-market design.

• Customer proposition and orchestration requirements, including safeguards that protect mobility needs and build trust.

  
  

What to watch next

In the next few years, V1G is likely to scale faster than V2G. It is simpler to deploy, easier to explain, and it still delivers meaningful benefits when paired with smart tariffs and predictive charging. V2G will grow more selectively, mainly in markets where regulation, grid-code compliance pathways, and interoperability are mature enough to support programs beyond pilots. 

The bigger shift is strategic. Automakers are becoming energy participants because their products sit at the center of flexibility, data, and customer experience.

The leaders will not simply add bidirectional hardware, but pair strong orchestration with clear regulatory pathways, and push interoperability from standards documents into everyday performance. If that happens, the “EV as a grid problem” narrative flips for good. The car becomes something else entirely: a power plant you can drive.

“Future low-carbon grids will require smart load orchestration. Automakers and EV owners can help meet that need, and generate real revenue, by integrating vehicles into the energy ecosystem. Done well, this supports power-sector decarbonization and speeds the transition to cleaner vehicle fleets.” Robert Fisher, SBD Automotive – Senior Consulting Manager

How SBD can help

If you or your team would like to understand how the highlighted technologies, partnerships and market dynamics could impact your strategy, we invite you to get in touch. Email info@sbdautomotive.com to connect with one of our experts and discuss your specific requirements.