Electric vehicles present a complex dilemma for Australia's energy infrastructure. On one hand, they could potentially strain the existing networks, while on the other, they might offer a solution by storing renewable energy. Experts emphasize that it is up to motorists to determine the nation's path.

Unraveling the Impact of Electric Vehicles on Australia's Energy

Electric Vehicles and Strain on Energy Networks

Electric vehicles have the potential to put a significant burden on Australia's energy networks. As seen in the Centre for New Energy Technologies seminar, the current power grids are not yet equipped to handle a full and immediate transition. This could lead to challenges in meeting the increased energy demands associated with a large-scale shift to electric cars. For instance, if all vehicles were to switch to electric overnight, it would be equivalent to doubling the number of houses connected to the grid. This highlights the need for careful consideration and planning to ensure the stability and reliability of the energy system.

However, it's not all doom and gloom. There are technological advancements on the horizon that could change the game. Battery-powered cars with vehicle-to-grid (V2G) technology hold the key to a more sustainable energy future.

The Role of V2G Technology in Storing Renewable Energy

V2G technology, recently approved for use in Australia, offers a promising solution. It allows battery-powered cars to act as energy storage units, feeding renewable energy back into the networks. This not only reduces the need to build additional infrastructure but also helps to balance the supply and demand of electricity. For example, when there is an excess of renewable energy available, such as during sunny days with high solar generation, electric vehicles can store that energy and release it when needed. This seamless integration between electric vehicles and the grid has the potential to revolutionize the energy sector.

According to Ross De Rango, head of energy and infrastructure at the Electric Vehicle Council, even if only a small percentage of electric car drivers use V2G technology in 2030, it could provide significant support to the national grid. With 2.5 million electric and plug-in hybrid cars on the road by that time and just 5% of them participating in V2G, it could amount to around 125,000 vehicles contributing to the energy supply. This represents an export capability in the 500 to 1000 megawatt range.

Consumer Choices and the Driver's Seat

The transition from petrol and diesel to electric cars gives consumers a unique opportunity to shape the future of energy. As James Seymour, chief executive of the centre, pointed out, how we use our electric vehicles and integrate them with the grid will have a significant impact. Consumers have the power to decide whether to charge their vehicles at off-peak times or use them as mobile batteries. This flexibility allows them to play an active role in optimizing the energy system.

For example, some consumers may choose to charge their electric vehicles during the night when electricity demand is lower, taking advantage of cheaper rates. Others may be willing to participate in V2G programs and contribute to the grid during peak demand periods. These choices not only benefit the individual driver but also the entire energy network.

Policy Support and the Future of Electric Vehicles

With the right policy support from the government and electricity retailers, electric cars could become a key player in propping up the power network within a short period. Consulting firm enX director Jon Sibley believes that there is no reason why we can't replicate the success of rooftop solar with electric vehicles. By 2040, it is possible to have around four million vehicles on the road providing essential services through V2G technology.

Brisbane-based firm RedEarth Energy Storage has announced plans to manufacture V2G technology for release in 2025, potentially accelerating its implementation. This shows the growing interest and investment in this area, which could lead to a more sustainable energy future for Australia.

You can hear Jon Sibley discuss the possibilities of V2G technology in the latest episode of the weekly Energy Insiders podcast on The Driven's sister site Renew Economy.AAP