Bill Mistakes, Complaints and Official Help
Common energy plan mistakes in Australia (and how to avoid each one)
The electricity and gas plan mistakes that cost Australian households most — ended benefit periods, conditional discounts, wrong tariff, ignoring supply charges, solar and gas pitfalls.
The most expensive energy plan mistakes in Australia are usually quiet ones: staying on a plan after its benefit period ends, choosing a plan for a conditional discount you do not get, comparing plans on a typical household rather than your own usage, ignoring the supply charge, and sitting on a standing offer for years. None of these is a scam; they come from how plans are structured. Each can cost a household hundreds of dollars a year, and each is fixable with a short check. This guide lists the patterns, shows the cost with illustrative arithmetic and explains the fix.
Mistake 1: Letting a benefit period lapse
Many market offers include a discount, credit or special rate for a benefit period (often 12 months). When it ends, the plan continues without it.
Illustrative example: annual usage costs $1,800 before discount, with a 15% usage discount for 12 months.
- Year 1: $1,800 × 0.85 = $1,530
- Year 2 (discount ended): $1,800, a $270 increase without any price change
Fix: note the benefit end date from the plan fact sheet; compare again a month before. Retailers must notify you before a benefit ends, but notices are easy to miss.
Mistake 2: Choosing a conditional discount you will not get
"Pay on time" or "direct debit" discounts only apply if you meet the condition every bill.
Illustrative example: Plan A costs $1,700 with no conditions; Plan B costs $1,900 before a 10% pay-on-time discount ($1,710 if on time).
- Pay every bill on time: Plan B $1,710 vs Plan A $1,700 — Plan A still slightly cheaper
- Miss one of four quarterly bills: Plan B ≈ $1,710 + $47.50 = $1,757.50
Fix: compare the unconditional price first; the reference price guide explains the rules.
Mistake 3: Comparing on a "typical" household
Comparison tools without your data assume an average usage pattern. If you have solar, a controlled load, an EV or a large family, the "cheapest" plan for a typical home may be the wrong one for you.
Fix: use your NMI on Energy Made Easy or upload smart meter data to Victorian Energy Compare. See the step-by-step comparison.
Mistake 4: Ignoring the supply charge
Low-usage households (singles, holiday homes, well-insulated apartments) can be hit harder by a high supply charge than by usage rates.
Illustrative: a household uses 2,000 kWh a year.
- Plan X: 140 c/day, 26 c/kWh → $511 + $520 = $1,031
- Plan Y: 85 c/day, 32 c/kWh → $310.25 + $640 = $950.25
Plan Y is about $81 cheaper despite the higher usage rate.
Mistake 5: Staying on a standing offer
Standing offers are capped by the DMO or VDO, but the cap is a ceiling, not a bargain. Many market offers are priced below the reference price. If your bill says "standing offer" or "default offer", compare. See the DMO 2026–27 and VDO 2026–27 guides.
Mistake 6: Time-of-use without changing habits
Moving to time-of-use or a free-midday plan without shifting any usage can increase your bill if most of your power is used in the evening peak. Test it first with the flat versus time-of-use worked example.
Mistake 7: Chasing the highest feed-in tariff
A high feed-in tariff can come with high usage rates. For many solar homes that still buy a lot of grid power, a plan with lower usage rates and a modest feed-in tariff costs less overall. See solar feed-in tariffs in 2026.
Mistake 8: Forgetting gas
- A dual-fuel discount that depended on keeping gas with the same retailer can disappear if you move only electricity.
- Removing one gas appliance keeps the gas supply charge; savings are often small until the account is closed.
See the gas versus all-electric bill example.
Mistake 9: Not passing on concession details
Concessions do not follow you to a new retailer or address automatically. Re-register after every switch or move.
Mistake 10: Not checking the first bill after a change
Errors are easiest to fix early. Check that the rates, supply charge and discounts match what you were promised. The bill reading example shows the method.
Quick self-check
| Question | If "no" or "don't know" |
|---|---|
| Do I know when my benefit period ends? | Find it on the fact sheet or ask |
| Have I compared using my own usage in the past 12 months? | Compare now |
| Is my plan a market offer? | Check bill; compare if standing offer |
| Do I get every conditional discount? | Compare unconditional prices |
| Are my concessions on the bill? | Contact retailer |
| Does my plan match my meter and appliances? | Review tariff type |
If a mistake was the retailer's (wrong rates, missed concession), ask for a correction and use the complaints process if needed. For bill shock caused by estimates, see estimated bills and back-billing. The help overview lists the right contact for each problem.
FAQ
Is it worth switching for $50 a year?
It is your call. Switching is usually quick, but a call to your current retailer for its best offer may achieve the same saving without changing.
Are sign-up credits worth it?
A one-off credit can tip the first year, but compare the ongoing rates; the credit does not repeat.
Should I pick a fixed-price plan?
A fixed-price plan locks rates for a set period, which helps with budgeting. It may not be the cheapest, and terms differ. Read what happens at the end of the fixed period.
Sources
- Energy Made Easy — plan comparisons and plan fact sheets
- Victorian Energy Compare — Victorian plan comparisons
- Australian Energy Regulator — rules on benefit change notices and price information
- Australian Competition and Consumer Commission — electricity advertising rules
