Off-peak electricity times in WA: Synergy's Midday Saver against A1
By Sithum Imarsha Last reviewed
On the Synergy regulated tariff, peak is 3pm to 9pm. Super off-peak is 9am to 3pm. Off-peak is 9pm to 9am. Time of use is about $109 a year cheaper for a typical 4-person home: 16.6 kWh a day, with 33.4% of it in the peak. It stays cheaper while less than 38.2% of your use is 3pm to 9pm.
Your result
For your home
Time of use is about $109 a year cheaper
- Time of use, a year
- $2,341
- Flat, a year
- $2,451
- Peak share used
- 33.4% (typical home)
- Daily use
- 16.6kWh
The rates behind it
- Peak rate
- 55.33c/kWh, 3pm to 9pm
- Rest of the day, averaged
- 18.28c/kWh
- Flat rate
- 33.26c/kWh
- Supply charge, time of use vs flat
- 132.78c vs 119.24c a day
Fix the highlighted field to update.
Break-evenTime of use wins while less than 38.2% of your use is 3pm to 9pm.
ClockQueensland and WA have no daylight saving.
Season
RatesThe time of use rates for Synergy come from a dated third-party source, not the retailer's own price list.
Your planThese are the times on the Synergy regulated tariff. Check your plan.
Your whole billEstimate your whole bill.
How we calculated this
- The peak rate is averaged over the year, because some days and months have no peak.
- The rest of the day is priced by the use of a typical home in each band.
- A year on the flat rate is compared with a year on time of use. Break-even is the peak share where they cost the same.
Full method, tables and sources: Peak and off-peak times calculator
| Band | Times | Days | Season | c/kWh |
|---|---|---|---|---|
| Peak | 3pm to 9pm | Every day | All year | 55.33c |
| Super off-peak | 9am to 3pm | Every day | All year | 8.85c |
| Off-peak | 9pm to 9am | Every day | All year | 24.34c |
The peak hours over a year
55.33c/kWh
The rest of the day
18.28c/kWh (Estimate: Ergon uses the Energex pattern (same windows, no published profile). The ACT, Tasmania and WA use the plain mean of the five AER patterns)
Flat for a year
(119.24c + 16.6 kWh × 33.26c/kWh) × 365 = $2,451
Time of use for a year
132.78c a day supply, peak share 33.4% (typical home): $2,341
Break-even
Time of use wins while less than 38.2% of your use is 3pm to 9pm.
This version starts with a 4-person home on Synergy, where almost every home pays one of two regulated prices.
Western Australia: what to know
Dated third-party source
- Midday Saver has 3 bands, every day of the year, weekends and public holidays included: super off-peak 9am to 3pm at 8.85c a kWh, peak 3pm to 9pm at 55.33c, and off-peak 9pm to 9am at 24.34c. The midday band is the cheapest.
- A home on Western Power's network cannot choose its retailer: Synergy is the only one. So the flat and time of use prices here are the prices you are billed at, not caps. Midday Saver needs a smart meter.
Official source
- WA has no daylight saving, so every time here is Australian Western Standard Time all year.
| Household | kWh a day | Flat | Time of use | Cheaper | Break-even |
|---|---|---|---|---|---|
| 1 person | 8.9 | $1,516 | $1,480 | Time of use by $36 | 36.3% |
| 2 people | 12.8 | $1,989 | $1,916 | Time of use by $73 | 37.6% |
| 3 people | 16.1 | $2,390 | $2,285 | Time of use by $105 | 38.2% |
| 4 people | 16.6 | $2,451 | $2,341 | Time of use by $110 | 38.2% |
| 5 or more people | 16.6 | $2,451 | $2,341 | Time of use by $110 | 38.2% |
- At regulated prices, with a typical share of use in the peak, time of use is cheaper in every row of the table: by $36 a year for 1 person, up to $110 for 5 or more people.
- Here the time of use offer's supply charge is 13.54c a day higher than the flat offer's, $49 a year, so the break-even moves with the size of the home: from 36.3% of use in the peak for 1 person to 38.2% for 5 or more people. A typical home is at 33.4%.
- On the regulated time of use offer, a typical 4-person home that moves 10% of its use out of the peak and into the other hours saves $224 a year. Moved into the cheapest band instead, 9am to 3pm, the same 10% saves $281 a year. A typical home has 26.1% of its use in that band already, and 40.6% from 9pm to 9am.
Each row is a whole year on Synergy at the Synergy average daily use for Perth at that household size (Estimate), with a typical home's share of use in each band (Estimate). Break-even: time of use is the cheaper plan while less than this share of the home's use is in the peak hours, with the rest split over the other bands as in a typical home. 2026-27 flat and time of use rates: Dated third-party source.
What else matters for time of use in Western Australia
Solar export rates in Western Australia
The WA Government page lists two rates for Synergy’s Distributed Energy Buyback Scheme as of 1 July 2024: 10c/kWh for exports from 3pm to 9pm and 2c/kWh from 9pm to 3pm. We could not confirm them for 2026-27.
Source: WA Government, Energy buyback schemes page: DEBS rates for Synergy customers as of 1 July 2024 (Official source). Checked 1 October 2026.
The hours that pay more for exports, 3pm to 9pm, are the peak hours on the regulated time of use offer, when a kWh bought costs 55.33c (Dated third-party source). A solar home on that offer gains most from using its own power in those hours, or storing some for them, rather than exporting it.
Every network and your own peak share: use the main peak and off-peak times calculator.