Synergy battery rewards: how VPP earnings actually work

What is Synergy battery rewards?

Synergy Battery Rewards is Western Australia's Virtual Power Plant (VPP) program for the SWIS network. When you join, Synergy can remotely discharge your battery during peak demand (typically 4–9pm) to help stabilise the grid. In return, you receive VPP activation credits at 70¢/kWh during events — roughly $100–180/year for a 10–13 kWh battery in the modelled scenarios below.

How much can you earn?

Battery Rewards pays 70¢/kWh during activation events. The modelled range below assumes 15–25 events per year at ~70% discharge:

These figures cover activation credits only. DEBS peak exports (10¢/kWh, 3–9pm) add another $50–100/year in the same modelled scenarios. Day-to-day self-consumption from the battery is the larger driver of bill reduction (~$1,000–1,500/year, modelled).

Eligibility requirements

How VPP events work

When grid demand is high — typically consecutive 30–35°C+ days when air-conditioning load peaks across the network — Synergy may trigger a VPP event:

1. Event notification: an optional SMS/email 1–2 hours before the event.
2. Battery discharge: Synergy remotely discharges the battery to export to the grid.
3. Duration: events typically last 1–3 hours within the 4–9pm peak.
4. Payment: 70¢/kWh VPP activation credit, plus DEBS peak export (10¢/kWh) on the exported kWh.
5. Recharge: the battery recharges overnight or from solar the following day.

Battery wear

VPP participation adds some cycling. The figures most installers and warranty documents quote:

• Event frequency: 20–40 events per year, not daily.
• Partial discharge: Synergy typically discharges 50–80% of usable capacity per event.
• Warranty impact: adds roughly 2–4% to the annual cycle count.
• Trade-off: the ~$100–180/year credit on a 10–13 kWh battery is modelled to exceed the marginal wear cost.

Most battery warranties allow 4,000–6,000 cycles over 10 years. VPP adds 20–40 cycles per year, small against daily self-consumption cycling. Always confirm how VPP cycles count under your specific warranty.

VPP vs DEBS: what's the difference?

Key point: both can run together. VPP members still earn DEBS export rates on kWh sent during a dispatch, in addition to the 70¢/kWh activation credit.

VPP and the WA battery scheme

Under the current WA framework, VPP participation (Tier 2 registration) is required to access the WA Battery Scheme benefits:

• $$130/kWh rebate up to $1,300 (10kWh max eligible) for Synergy customers
• Up to $10,000 interest-free loan (household income threshold: $210,000)

Note: Customers are auto-enrolled for VPP participation unless they specifically opt out. Your installer handles the Tier 2 registration during commissioning.

How to join

1. Check SSL compatibility: confirm your inverter and battery models are on Synergy's Supported Solutions List.
2. Switch to the A1 tariff: required if you're not already on Synergy A1 Midday Saver.
3. Installation and registration: the installer handles Tier 2 registration and commissioning tests against Synergy's utility server.
4. Auto-enrolment: Battery Rewards enrolment runs by default at commissioning. Opting out is available.
5. Payment start: activation credits begin once commissioning is complete.

Is VPP worth it?

In the modelled scenarios above, the annual credit (~$100–180 for a 10–13 kWh battery, based on 70¢/kWh × 15–25 events × ~70% discharge) sits well above the marginal cost of the added cycling. DEBS export rates still apply during a dispatch.

Where VPP fits less well: a household that needs full battery capacity reserved for evening peak (heavy machinery on a workshop circuit, peak-window EV charging, or backup-first sizing) may prefer to opt out and keep manual control. Most households find dispatch events do not materially affect daily usage.