FAQs

This con­tent has been writ­ten col­lab­o­ra­tive­ly by the Project Part­ners of Alice Springs Future Grid, led by the Intyal­heme Cen­tre for Future Ener­gy. Please sub­mit your ques­tions, which will be answered in due course and shared on this plat­form if rel­e­vant and appro­pri­ate. You will be noti­fied via email when the answer is post­ed. Terms and con­di­tions are detailed on the sub­mit a ques­tion page. Fur­ther FAQs specif­i­cal­ly about the Solar Con­nect Vir­tu­al Pow­er Plant tri­al are addressed in this doc­u­ment

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What was the Solar Connect VPP trial?

Solar Connect was a townwide solar and battery trial linking households via a Virtual Power Plant (VPP). House­holds in the VPP shared solar and battery power in ways that benefited the Alice Springs grid and informed the opportunities for the next generation of more sustainable energy solutions.

What is a VPP?

A Vir­tu­al Pow­er Plant (VPP) is typ­i­cal­ly a col­lec­tion of solar and bat­tery stor­age sys­tems that work togeth­er to allow coordinated control of their energy.

VPPs use smart technology to control the energy flow to and from the grid on demand – benefitting the household, grid and the community.

Why was a VPP part of the Future Grid project?

The VPP in Alice Springs, known as Solar Connect, invited households with rooftop solar, with or without a battery to join the trial.

The experience in developing the trial, engaging participants and running the trial, provided valuable insights to the project stakeholders on what future trials might look like. The functionality developed during the trial provided the opportunity to investigates these new technologies and concepts – that is, this was the first VPP in the NT, and it allowed the participants to share energy and data in new ways.

What happened during the Solar Connect VPP trial?

During the trial, participants had access to an energy monitoring app, giving them greater visibility over their energy use.

They also received monthly updates on their household’s performance in the VPP from Jacana Energy, an Alice Springs Future Grid project partner. A quarterly update showed the performance of the VPP itself, so participants could see how their participation fit into the bigger picture.

Future Grid’s Community Engagement team at ALEC stayed connected with surveys, updates, focus groups, details of events and other opportunities.

Solar battery participants also participated in a trial tariff that scheduled their batteries to charge during the middle of the day, for usage in the afternoon and evening.

What was the timeline for the Solar Connect VPP trial?

The trial became operational in October 2022 and ended in October 2023.

Why was the Solar Connect VPP trial necessary?

Alice Springs Future Grid created the Northern Territory’s first residential Virtual Power Plant (VPP). The trial looked at how a VPP can help keep the grid stable while increasing the amount of clean energy in the Alice Springs power system.

The VPP was part of a suite of innovative trials, models and investigations that looked at how to keep the Alice Springs network within voltage limits, reduce the reliance on gas power generation, and help the Northern Territory to reach 50% renewable energy by 2030.

Do gas generators need to stay operating regardless of whether there's "too much solar" in the system?

While this statement is an oversimplification of the process, it is true that at certain times of day and during certain periods of the year, not all the solar power being generated can be used by the grid. The Alice Springs electricity system is heavily reliant upon gas generation – not only for power, but also to provide essential system services (ESS) such as voltage control, frequency, and inertia. These services can be provided by technical solutions like batteries, but at this stage this is a prohibitively expensive means of addressing the problem in its entirety. The aim of the Alice Springs Future Grid’s Roadmap to 2030 is to provide information on how more renewables can be tied into the use of gas generators at the main power stations.

If I get an electric vehicle (EV) do I need 3-phase power at my house to charge it? How much does it cost to charge each day?

You don’t need 3-phase power to charge an EV. In fact, you can purchase charging cables that plug into a standard domestic socket. The most common way to charge an EV is via a "type 2" charger, and many EV drivers will opt to have a charging point installed in their home. A 3-phase connection will charge your car more quickly. A single phase type 2 connection will be slower than 3-phase but faster than your standard household sockets. Your local solar installer or electrician can assist with questions specific to your case. The cost of the charge will depend on the general cost of electricity, the capacity of the vehicle’s batteries, and whether you’re incorporating solar power. A fuel cost savings calculator can be found on myelectriccar.com.au, with plentiful similar resources available elsewhere online.

Are there charging stations along the Stuart Highway to Adelaide and Darwin? Are they fast chargers?

There are enough chargers along the highway to comfortably travel the length of Australia. There are a surprising number of charging points all over Australia, including in some incredibly remote locations, such as Kiwirrkurra, which is one of the most remote settlements on the planet! It is easy to view the full range of charging points on the app PlugShare.

What is the project’s position on vehicle-to-grid technology and electric vehicles in general?

The Future Grid car was an electric vehicle (a Nissan Leaf) and there were individuals in the team and community who were highly enthused about this technology. However, operating within a constrained budget and timeline, electric vehicles or related trials were not considered as part of the project. The team designed a series of interdependent activities that served to consider immediate issues in the system and support further renewable energy penetration into the Alice Springs grid in a cost-effective and realistic way. These interventions made use of and optimise existing grid infrastructure, which is a valuable public asset. The Future Grid team always welcomed any future or parallel projects that supported the increased use of electric vehicles in Alice Springs or focused on the integration of this technology as another means of supporting the grid.


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