Post Category → Vehicle-to-grid

Vehicle-to-grid response to a frequency contingency in a national grid

A paper published in npj Sustainable Mobility and Transport analysing the vehicle-to-grid response to a major grid disturbance in the Australian grid.

Abstract

Vehicle-to-grid technology enables electric vehicles to contribute their large, high-power batteries to power systems reserves. Here we report the first demonstration of a fleet of vehicles discharging to support system security after a frequency contingency in a national grid. Our results highlight the potential of vehicle-to-grid, with vehicles discharging within 6 s of the contingency event, and shortcomings, with vehicles recommencing charging before the power system had fully recovered.

Full paper below

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Unplugged is inflexible – How drivers’ plug in behaviour determines the flexibility of electric vehicle (dis)charging

In a neat little project for the ACT Government I analyse the (IMO oft overlooked) critical step of when EV drivers plug in their vehicles. If they’re not plugged in for substantially longer than required for charging then EVs are not the fabulously flexible load that they could be.

202406-Unplugged-is-inflexibleDownload

Australian vehicle-to-grid expert says research shows even greater benefits are possible

Dr Björn Sturmberg, who is the research leader of ANU’s Battery Storage and Grid Integration Program says vehicle-to-grid offers multifaceted solutions to Australia’s energy woes including reduced prices and increased grid resilience. Sturmberg thinks EV owners can get an even better deal than free charging when it comes to V2G.

“The opportunities for V2G to generate revenue in Australia are significant, due in no small part to the volatility of an electricity market with concentrated market power and aging fossil fuel generators as illustrated earlier this week in Victoria.” said Sturmberg.

On Wednesday after storms in Victoria cut transmission lines leaving 500,000 households without power, wholesale electricity prices spiked as high as $16,600/MWh.

Sturmberg thinks that V2G has the potential to provide a lot more financial benefit than free charging to EV owners.

“Our research shows that the potential income from V2G will in many cases far exceed the cost of EV charging, meaning drivers ought to receive more than just free charging.”

He also believes EV owners should be incentivised to keep their vehicles connected as much as possible.

“For the grid – and thereby for the reliability and affordability of all Australian’s electricity supply – the most important aspect of EV usage is that EVs are plugged in to chargers (or a regular power outlet) as often as possible,” he says.

“This provides the greatest flexibility in their charging, to reduce the cost of electricity generation as well as, critically, the costs of network maintenance and emissions. This requires a shift in drivers’ behaviours, to habitually plug in their EVs whenever parked.”

Sturmberg says he wants to see innovation and trials of tariffs that provide incentives for every minute that EVs are plugged in and available for managed (‘smart’) charging and says this has the potential to be very effective even before including V2G.

On the impacts of V2G to EV battery life Stumberg thinks provided systems are well managed, there’s no need for concerns around battery degradation.

“The impact of V2G (and driving) on batteries is primarily determined by the state of charge of the battery and the rate at which power is injected or drawn out of the battery,” says Sturmberg.

“Well managed V2G, that keeps the state of charge of vehicles within batteries’ comfort zone (generally 30-80%), will have a very modest impact – and in some studies has been shown to improve battery health compared to unmanaged charging by reducing the amount of time that batteries are at a very high state of charge.”

Full story https://thedriven.io/2024/02/16/costs-down-resilience-up-first-vehicle-to-grid-tariff-to-save-drivers-1640-per-year/

Participation and sensemaking in electric vehicle field trials: A study of fleet vehicle-to-grid in Australia

We have just published a new article from the REVS V2G trial about how participants in a field trial – in this case, the fleet, sustainability and asset managers – make sense of and influence technologies when a group comes along wanting to deploy and test them.

We found unexpected effects which revealed insights about what configuration of V2G might be acceptable to fleet end users. If energy market participants want V2G to solve their problems (and make them profit), they need to do the flexibility work.

Abstract

Vehicle-to-grid is a niche technology that has the potential to benefit electricity markets and support more renewable energy in the grid. However, interest from prospective users in adopting V2G is not well understood, particularly in the context of fleet vehicles. Technology-oriented field trials can contribute to the development of niche technologies. Trials usually focus on making engineered systems work, institutional embedding and testing business models. However, through the participation of users they also provide the opportunity to explore processes of problem definition and the formation of social, ethical and cultural meanings. This article presents findings from the Realising Electric Vehicle-to-grid Services project, an Australian trial of vehicle-to-grid in a government-owned light passenger car fleet, aiming to explore co-productive processes as essential aspects of participatory technology development. Our data comprises interviews with organisational actors responsible for facilitating and mediating the trial, as well as others in similar organisational roles. Adopting ecologies of participation as a framework, it reveals the productive effects of these actors in mediating the local embedding of vehicle-to-grid. These findings challenge the framing of vehicle-to-grid as being a question of consumer acceptance and suggest that, for this promising technology to contribute to a more sustainable future, the electricity sector must accept more risk.

Full article: https://lnkd.in/eukchts2

REVS project completion

This week marked the completion of the REVS project – the largest demonstration of vehilce-to-grid technology in Australia and foundational research on the integration of electric vehicles into the grid and people’s lives.

Some of the media stories from the wrap up event below:

“An immense amount of competition:” V2G charging station costs set to plummet

https://www.canberratimes.com.au/story/8140475/powering-the-future-with-your-next-ev-takes-a-step-forward/

Electric vehicles: Batteries on wheels can make grid smaller, says network owner

A provocation – Who will drive Vehicle-to-Grid?

A “provocation” is my new favorite form of publication!

This article in Utility Magazine was a real pleasure to write and condenses many recent discussions.

Our main takeaway is this: “Our experience to date suggests that V2G may stand to be of greatest attraction “for the grid” and that there is much to be done “by the grid” to accelerate this innovation becoming a seamless part of the electric vehicle experience.”

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Examining the vehicle-to-grid niche in Australia through the lens of a trial project

We have a new paper in the journal Environmental Innovation and Societal Transitions.

Highlights

  • Vehicle-to-grid is viewed as a sub-niche of electric vehicles and distributed energy.
  • Vehicle-to-grid is in an embryonic stage of development in Australia.
  • Proponents hold strong long-term visions, but are unsure how to get there.
  • Learning has focused on problem solving; other types of learning are lacking.
  • More experimentation, involvement of new actors and embedding are required.
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EV chargers for V2G and V2H to arrive in Australia within weeks

From James Purtill in the ABC

A new kind of charger that allows an electric vehicle (EV) to be used as a giant home battery is close to going on sale in Australia, with the first commercial shipment to arrive within weeks.

Unlike standard one-way EV chargers, bidirectional chargers can also discharge energy from an EV, which means they can be used to power a home (known as vehicle-to-home or V2H) and its appliances, or to export energy to the grid (vehicle-to-grid or V2G).

This may sound simple, but bringing them to Australia has proven difficult.

For years, a mix of regulatory and engineering hurdles have repeatedly pushed back the technology’s rollout date.

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