The short version
Key points
- The $1,300 WA battery rebate requires participation in Synergy’s VPP.
- The VPP contract is described as two years, with up to 30 activations per year, or 60 in total.
- During an event, Synergy can use up to 90% of the battery’s capacity, although the actual amount discharged may be lower.
- Participants receive 70 cents per kilowatt-hour for the energy discharged, plus an offset credit.
- VPP prices may change, with Synergy expected to advise customers in advance during the two-year period.
What the WA battery rebate requires
The updated Synergy Battery Rewards information provides more detail about the virtual power plant requirement attached to the Western Australian battery rebate. Households that receive the $1,300 payment towards a battery must allow Synergy to participate in the battery’s stored energy through its VPP.
The arrangement is not described as applying for the life of the battery. Instead, the contract period is two years. During that period, the battery may be activated up to 30 times per year, for a total of up to 60 activations.
How VPP events work
A VPP event is triggered when electricity demand exceeds supply. The example given is a period when solar generation is falling while household demand rises, such as during a summer evening when air conditioners are operating.
There may first be a standby window of approximately two hours. During this period, the battery’s discharge can be placed on hold before the event begins. An activation may last for up to six hours.
The battery does not necessarily have to be fully discharged during every event. The amount used depends on the event and the battery’s available capacity. The stated maximum is up to 90% of the battery’s capacity, but a smaller amount may be taken, leaving some stored energy available to the household.
Payments and credits
Participants are paid according to the amount of energy discharged during an event. The rate shown is 70 cents per kilowatt-hour. For example, with a 10 kWh battery, 90% represents 9 kWh. At 70 cents per kilowatt-hour, that would produce $6.30 for the energy used in the example.
The calculator also includes an offset credit for the period when the battery is being drained. In the example discussed, the total value is approximately $9.14 per activation. Across 30 activations, that works out to about $274 per year, although the actual amount depends on how much energy is used during each event.
The credits are usage-based rather than a fixed payment for the entire battery capacity. If only 5 kWh is discharged, the participant receives credits for 5 kWh rather than for the battery’s full capacity. Credits are added to the customer’s bill.
Battery use and changing prices
The transcript estimates that the energy use from 60 activations over two years represents approximately 1.8% of battery usage, although this depends on the battery’s size. The level of use may therefore be relevant to owners concerned about battery warranties that limit the number of charge and discharge cycles.
The published information says prices are subject to change. Synergy is expected to advise customers in advance of any change during the next two years. The transcript does not establish whether the contract automatically ends after two years or continues until the customer cancels it. That remains an issue for customers to clarify before signing up.
TechManPat’s conclusion
Pat’s view is that the two-year limit makes the arrangement more acceptable than a five- or ten-year commitment. He says he is likely to take up the rebate because it involves 60 possible activations over two years, plus the potential annual credits, but he wants to see how the first two years operate before deciding whether to continue or cancel the arrangement.
This knowledge-centre summary is based on the linked TechManPat video and reflects the information available when it was published. Check current pricing, availability and policies before acting.
