Electricity prices in Mount Gambier for 2026-27
| Network area | Usage rate | Supply charge | At 4,000 kWh a year |
|---|---|---|---|
| SA Power Networks | 41.91c | $1.80/day | $2,334 |
Prices are set by network area, not by town, so every home on SA Power Networks' network faces the same regulated price as Mount Gambier. SA has the highest regulated usage rate in the country, which makes shopping around worth more here than anywhere else.
Free power in Mount Gambier
Under the Solar Sharer Offer, retailers must offer at least one plan with free power from 12pm to 3pm in this area from 1 July 2026. See the Solar Sharer Offer.
Full state detail: South Australia electricity rates.
Cheapest electricity plans in Mount Gambier
| Retailer | Plan | Yearly cost | Below the reference |
|---|---|---|---|
| 1st Energy | 1st Emerald - Single Rate | $1,887 | 19% |
| GloBird Energy | FULLHOUSE Residential (Flat Rate)-SAPN | $1,905 | 18% |
| Kogan Energy | Kogan Energy with free FIRST | $1,951 | 16% |
| Powershop | Power House | $1,951 | 16% |
| Flipped Energy | Anytime Switched On 2.2! | $1,984 | 15% |
The reference price for SA Power Networks at 4,000 kWh is $2,334 a year. If your bill works out above it for the same usage, you are paying more than you need to. See how to switch retailers.
Average electricity bill in Mount Gambier
| Household | kWh a year | kWh a day | Per quarter | Per year |
|---|---|---|---|---|
| 1 person | 3,147 | 8.6 | $494 | $1,976 |
| 2 people | 5,032 | 13.8 | $692 | $2,766 |
| 3 people | 5,270 | 14.4 | $716 | $2,866 |
| 4 people | 5,998 | 16.4 | $793 | $3,171 |
| 5 or more people | 7,544 | 20.7 | $955 | $3,819 |
In the AER benchmark for a three-person home here, winter is the highest-use season and summer the lowest. Homes with gas heating or hot water, or with solar, will use less from the grid than these figures.
- The AER's South East benchmark zone is entirely in climate zone 6, mild temperate, cooler than Adelaide.
- Winter is the highest-use season by a wide margin in the South East benchmarks.
More on usage: average bills in South Australia and why a bill can be high.
Solar panels in Mount Gambier
| Rooftop solar systems installed | 6,104 |
|---|---|
| Total solar capacity | 46 MW |
| Average system size | 7.5 kW |
| Solar systems in the past 12 months | 361 |
| Home batteries since July 2025 | 639 |
| Heat pump water heaters | 580 |
Postcode 5290 is in CER solar zone 3, rated at 1.382 MWh per kW a year. A 6.6 kW system here is deemed to make about 9,121 kWh a year, or 25.0 kWh a day, and earns 45 STCs if installed in 2026. See the solar calculator to estimate savings.
Retailers set their own feed-in tariffs here. The median flat rate on retailers' cheapest plans in South Australia is 2c per kWh. See the best feed-in tariffs.
Rebates: solar rebates and battery rebates.
Power outages in Mount Gambier
Your network, not your retailer, fixes outages. Check SA Power Networks' outage map first, then report it if your home is not listed. More: power outages in South Australia and the SA Power Networks network guide.
Rebates and bill help in Mount Gambier
Mount Gambier households can get South Australia concessions and rebates, as well as federal programs. The main ones:
- Energy Bill Concession: Up to $291.27 a year
- SA Concessions Energy Discount Offer: 20% off Origin's standard electricity charges
- Cost of Living Concession: $270.60 for 2026-27
Every program: South Australia energy rebates, or use the rebate finder.
Questions about electricity in Mount Gambier
On the Default Market Offer for SA Power Networks in 2026-27, power costs 41.91c per kWh plus $1.80 a day, including GST. Market offers from retailers can be cheaper.
Using the AER consumption benchmark for South East zone (SA), a three-person household uses about 5,270 kWh a year. On the Default Market Offer that is about $2,866 a year, or $716 a quarter.
SA Power Networks. It owns the poles and wires and handles outages. For faults call 13 13 66.
Postcode 5290 is in Clean Energy Regulator solar zone 3. A 6.6 kW system there is deemed to produce about 9,121 kWh a year, or 25.0 kWh a day on average.
Sources
Prices come from the regulator or the regulated retailer. Usage benchmarks, climate zones, solar zones and installation counts come from the AER, ABCB and Clean Energy Regulator. Last checked October 2026. Prices include GST unless we say otherwise.
- AER, Default Market Offer 2026-27 final determination
- energy.gov.au, Solar Sharer Offer
- AER, Energy Made Easy product reference data (Consumer Data Right)
- AER, residential energy consumption benchmarks (Frontier Economics), December 2020
- Australian Building Codes Board, climate zone maps by local government area
- Clean Energy Regulator, postcode zone ratings and zones for solar panel systems
- Clean Energy Regulator, small-scale installation postcode data (to August 2026)
- Clean Energy Regulator, calculate small-scale technology certificate entitlements