Disputing an electricity or gas bill: your rights and the ombudsman path

You've opened your electricity or gas bill and something is wrong — the amount is double what you expected, you've been billed for a period you weren't even connected, or your retailer has quietly changed your tariff without warning. You call the retailer and get nowhere. The good news: energy billing disputes in Australia have a well-worn escalation path, and you have more leverage than most retailers will volunteer.

This article explains your rights under the Australian Consumer Law (ACL), how energy-specific rules layer on top, and how to use the energy ombudsman in your state or territory to seek a free, independent outcome — one that can bind the provider in eligible cases.

Quick answer

Whether you can get a correction, refund, or waiver depends on a few key variables: what went wrong (a billing error, an estimated read, a tariff change, or something else), whether you have raised it with your retailer first, and which state or territory you are in.

In general terms, energy retailers are subject to both the ACL and energy-specific rules that vary by jurisdiction. Where you acquired energy services as a consumer within the meaning of section 3 of the ACL — broadly, for personal, domestic or household use, at a price that falls within the ACL's thresholds, and not for re-supply or use in a production or manufacturing process — the consumer guarantees apply. That means the retailer must perform its services with due care and skill, and the bill should reflect your contract, the meter data, and the energy rules that apply where you live.

The practical escalation path, once you have raised the dispute with your retailer in writing, is usually the energy ombudsman in your state or territory. These schemes are free, independent, and can investigate eligible complaints; depending on the scheme, they can issue a decision that binds the provider if you accept it. Each scheme sets its own eligibility rules and jurisdiction, so confirming the current criteria on the relevant ombudsman's website before lodging is important.

What the law actually says

Energy retail services sit at the intersection of two frameworks: the ACL and a set of state and territory energy-specific laws and codes.

Under the ACL, section 60 requires that services be performed with due care and skill. Section 61 requires that services be fit for any particular purpose you made known to the supplier, provided it was reasonable to rely on the supplier's skill and judgment. Section 18 prohibits misleading or deceptive conduct — including misleading representations about pricing, tariffs, or contract terms. Any term in your energy contract that purports to exclude or restrict these guarantees is void to the extent it excludes, restricts or modifies them, under section 64.

Energy-specific rules add further obligations, and which set applies depends on where you live. The National Energy Customer Framework — the National Energy Retail Law (NERL) and the National Energy Retail Rules (NERR) — applies in the Australian Capital Territory, New South Wales, Queensland, South Australia and Tasmania. Victoria, Western Australia and the Northern Territory operate under their own local frameworks, so the detail of your protections differs depending on your state or territory. These rules govern things like billing frequency, estimated reads, back-billing limits, and what a retailer must do when a meter fault is discovered.

Back-billing is worth understanding before you pay a large catch-up bill. In jurisdictions covered by the national framework, the rules can limit how far back a retailer may recover an undercharge — commonly to around nine months — but this is not a universal cap that applies to every situation. The limit is generally tied to undercharges arising from the retailer's own fault; different rules may apply where it was not, where the meter could not be accessed, or under the Victorian, WA or NT frameworks. If you receive a large catch-up bill, ask the retailer in writing to explain why the undercharge occurred and which back-billing rule it says applies.

Where both apply, the energy code often provides more specific protections — but the ACL's misleading-conduct prohibition and service guarantees remain available alongside it, and you can rely on both.

When this applies (and when it doesn't)

The ACL consumer guarantees apply when you acquired energy services as a consumer under section 3 of the ACL. For most residential customers this is straightforward — household electricity and gas readily qualify. Small business customers may also qualify depending on their circumstances, and should check how section 3 applies before assuming either way.

Common situations where these rights are likely relevant:

• You received an estimated bill that is significantly higher than your actual usage, and the retailer refuses to adjust it after you provide a meter read.
• You were switched to a higher tariff without adequate notice, or the retailer's conduct around the switch was misleading.
• You have been back-billed for a long period due to a metering error, and the retailer is demanding payment beyond what the applicable back-billing rule allows.
• Your retailer has charged fees or exit costs that were not clearly disclosed when you signed up.
• You were signed up to a contract through a door-to-door salesperson and the terms were misrepresented.

Situations where the path may be different:

• If you are a large commercial customer whose energy acquisition falls outside the ACL's section 3 consumer definition, the consumer guarantees may not apply, though other protections may still be available.
• If the dispute is really about network charges, poles and wires, supply quality, or something a distributor did, you may need the distributor or metering coordinator involved. For a bill dispute, still start with your retailer — and check the ombudsman scheme's jurisdiction, because many schemes can consider complaints about distributors and other member providers, not only retailers.
• If the dispute involves a smart meter or meter data, ask the retailer to review the bill and arrange any meter-data check or meter test the applicable rules provide for. The retailer may need to involve the distributor, metering coordinator or another responsible party to do that.

What to do today

Energy billing disputes follow a clear sequence. Moving through it in order gives you the best chance of a quick resolution and preserves your escalation options.

Step 1 — Gather your records. Pull together your bills for the past 12 months, any meter read records, your contract or welcome letter, and any communications with the retailer. If you have a smart meter, you can often download your interval data from the retailer's portal — this can be powerful evidence of your actual usage.

Step 2 — Write to the retailer. A phone call creates no record. Send an email or letter to the retailer's complaints team (not the general service line — most retailers have a dedicated complaints address on the bill or their website). State the problem clearly: the billing period in dispute, the amount you say is wrong and why, and what you are asking for — a corrected bill, a refund, or a waiver of the disputed charge. Reference the ACL's service guarantees and, where relevant, the applicable energy rules.

Step 3 — Give a reasonable deadline. State that if you do not receive a satisfactory response within 10 business days, you will lodge a complaint with the energy ombudsman. This is not a bluff — it is the next step, and retailers know it.

Step 4 — Keep paying the undisputed portion. If part of the bill is clearly correct, pay that portion. Withholding the entire bill can give the retailer grounds to issue a disconnection warning. Under the national rules a retailer reviewing a disputed bill can generally still require the undisputed amount (or an average-usage amount) plus any other bills properly due. Ask the retailer to confirm in writing that the disputed amount is on hold while the review is underway.

If you want help drafting the complaint letter, fairgo can generate one for you in about 90 seconds — the wizard identifies the relevant ACL sections and produces a letter you can send under your own name.

What if the business refuses

If the retailer does not resolve the complaint to your satisfaction within a reasonable time — typically 10 to 20 business days — the next step is the energy ombudsman in your state or territory.

The ACT route is a tribunal, not an ombudsman scheme, so its process and powers differ.

Each scheme is free for consumers to use. Most require that you have already raised the complaint with the retailer and given them a reasonable opportunity to respond before the ombudsman will accept your complaint. Confirm the current eligibility criteria, jurisdiction, preconditions, and any exclusions on the relevant ombudsman's website before lodging — schemes can and do update their rules.

What the ombudsman can do: Depending on the scheme, an energy ombudsman can investigate complaints, facilitate resolution between you and the provider, and — where that does not settle it — issue a decision that binds the provider if you accept it. Available outcomes commonly include billing corrections, refunds, and waived charges, and some schemes can address non-financial loss. The types of outcome and any monetary limits vary by scheme, so check the current position on the relevant scheme's website.

What the ombudsman cannot do: The ombudsman cannot represent you in court, cannot handle every type of complaint, and cannot force a negotiated settlement. Its jurisdiction varies by scheme — many can consider complaints about retailers, distributors and other member providers, so do not assume a network or metering issue is out of scope without checking. Members generally have obligations under their scheme to cooperate with an investigation.

If the ombudsman path is not available or does not resolve the dispute, you can often file a claim with a state tribunal or a court. Which forum is correct depends on the enabling legislation for that forum and the nature and amount of your claim; for many ordinary ACL disputes a court rather than a tribunal may be the appropriate binding forum. Confirm the correct forum and current thresholds on the official site before filing. A full list of state regulators and bodies is at /agencies.

The ACCC is also an option for reporting systemic conduct — for example, if you believe your retailer has been misleading many customers about pricing — but the ACCC investigates patterns of conduct rather than individual billing disputes, and may point you to your state Fair Trading body or the energy ombudsman for your specific case. Our guide to which consumer regulator to contact explains how those bodies divide up.

Common mistakes

A few patterns come up repeatedly in energy billing disputes:

• Calling instead of writing. Phone calls are not evidence. A written complaint creates a paper trail, starts the clock on the retailer's response obligations, and is generally required before an ombudsman will accept your complaint.
• Disputing the entire bill when only part is wrong. Identify the specific amount in dispute and pay the rest. This keeps your position credible and reduces disconnection risk. If a disconnection warning arrives while a genuine dispute is under review, contact the retailer and the ombudsman urgently — restrictions apply to when a retailer may disconnect, and energy is an essential service.
• Not checking the back-billing rule. Where a retailer is demanding payment for a long historical period, ask which rule it relies on before paying. Any cap may depend on why the undercharge occurred, whether the retailer was at fault, whether the meter was accessible, and which framework applies in your state or territory.
• Assuming the contract is the only protection. Your energy contract may have dispute resolution clauses, but your ACL rights exist independently of it. A term that tries to limit your ability to dispute a bill may be void to the extent it excludes, restricts or modifies the ACL guarantees — see misleading conduct under section 18 for how that plays out in practice.
• Going straight to the ACCC. The ACCC handles systemic issues and enforcement, not individual billing disputes. The energy ombudsman in your state or territory is the right escalation point after the retailer.
• Waiting too long. The ACL does not set a single fixed warranty-style expiry for service guarantee claims, but delay can make it harder to establish what went wrong and when. Raise the dispute in writing as soon as you identify the problem, and keep dated records of every step.
• Accepting a credit without understanding the terms. Retailers sometimes offer a bill credit to resolve a complaint. Make sure you understand whether the credit covers the full disputed amount and whether accepting it requires you to give up further rights.

Most energy billing disputes are resolved at the retailer stage, once a clear written complaint citing the relevant rules lands on the right desk. The ombudsman path exists for the ones that aren't — free, accessible, and capable of binding the provider in eligible cases. Knowing the path before you need it is half the battle.

Related reading

• Services that go wrong — your ACL rights explained
• Business refused your refund? Here's what to do next
• Misleading conduct under section 18 — real examples
• Which consumer regulator should you contact?

This article is general information about Australian Consumer Law, not legal advice. The ACL is complex and your situation may have details that change the analysis. It also describes energy-specific rules and complaint pathways — including the national and local energy frameworks, energy ombudsman schemes, state Fair Trading bodies, and tribunals — whose scope, jurisdiction, rules, thresholds and processes sit outside the ACL and can change. Confirm the current position with the relevant body before lodging any complaint. For advice on your specific case, contact the energy ombudsman or complaint body for your state or territory, your state consumer body, or a legal advice service — the state and territory bodies are listed at agencies.