How Long Does the Energy Ombudsman Take?
Separate the supplier complaint clock from the Ombudsman case clock. Most delays happen because people escalate too early, send unclear evidence or mix too many issues into one complaint.
Use together
The short answer
Your supplier normally gets up to 8 weeks to resolve the complaint unless it sends a deadlock or final-position letter earlier. After the Ombudsman accepts the case and has evidence from both sides, many disputes are resolved in about 6 weeks on average, but complex billing, smart meter and back-billing cases can take longer.
The fastest route is not a louder complaint. It is a narrow complaint, one clear timeline, a clean evidence pack and a specific remedy request.
Two timelines people mix up
| Stage | What it means | What you should do |
|---|---|---|
| Supplier complaint period | The supplier usually has up to 8 weeks to resolve the issue before Ombudsman escalation. | Keep every bill, reading, email and complaint reference in one folder. |
| Deadlock or final-position letter | The supplier says it cannot do more. This can let you escalate before 8 weeks. | Save the full letter or email and check it clearly refers to the complaint. |
| Ombudsman acceptance | The Ombudsman checks whether the case is in scope and has enough information to progress. | Submit one issue summary and the remedy you want. |
| Investigation after evidence | The Ombudsman reviews both sides and may ask follow-up questions. | Do not add unrelated complaints unless essential. |
What slows cases down
A vague complaint
The investigator has to work out what you are actually asking for.
Mixed issues
Back billing, smart meter faults and direct debit disputes can need different evidence.
Missing dates
A bill dispute without bill dates, reading dates and complaint dates is harder to follow.
No requested remedy
Ask for a corrected bill, balance correction, refund, apology or explanation, not just “sort this out”.
Prepare before you escalate
Use the checklist to create a simple evidence pack before opening or updating an Ombudsman case.
The eight-week wait is being cut to six — but not yet
On 17 June 2026 the government published its response to the consultation Fairer, faster redress in the energy market. It confirmed three changes to this process:
| What changes | Now | Confirmed |
|---|---|---|
| Wait before you can escalate to the Ombudsman | 8 weeks | 6 weeks |
| Ombudsman's window to issue a decision | 6 weeks | 4 weeks |
| Penalties on suppliers who ignore a decision | None directly | Redress schemes gain the power to levy them |
Together that removes about four weeks from the consumer journey. Ofgem has also flagged the option of cutting the escalation wait further, to four weeks, in the longer term if the evidence supports it.
Be careful with the date. The response says the changes will happen “as soon as reasonably possible and certainly no later than Royal Assent for the Energy Independence Bill”. That means they are not in force as this page is written. Plan your complaint around eight weeks. If your case is still running in late 2026 or into 2027, check the current position before you assume you have to keep waiting — a supplier will not volunteer that the threshold has moved.
Source: DESNZ, Fairer, faster redress in the energy market: consultation response, published 17 June 2026.
A realistic end-to-end calendar
Add the stages up rather than looking at any one of them. People plan around “six weeks” and are then blindsided at week fourteen.
| Stage | Typical | Running total | What decides it |
|---|---|---|---|
| Supplier complaint period | Up to 8 weeks | 8 weeks | A deadlock letter cuts this short. Ask for one at week four if nothing is moving. |
| Referral and eligibility check | A few days to 2 weeks | ~10 weeks | Whether your submission is complete. This is entirely within your control. |
| Evidence request to supplier | Around 2 weeks | ~12 weeks | How fast the supplier responds. Not within your control. |
| Investigation and decision | Around 6 weeks after evidence | ~16–18 weeks | Case complexity and whether follow-up questions are needed. |
| Supplier implements | Up to 28 days | ~20–22 weeks | Whether you chase on day 29. |
Roughly five months end to end for a straightforward billing case, and the single biggest variable is the quality of what you submit on day one. That is the only stage where effort converts directly into saved weeks.
The evidence pack that actually gets read
Investigators handle a large caseload. A pack that can be understood in five minutes is treated differently from one that cannot. Build it in this order and name the files exactly like this.
| # | File | What goes in it |
|---|---|---|
| 1 | 01-summary.pdf | One page. What happened, in dated bullet points. What you want. Nothing else. |
| 2 | 02-timeline.pdf | A table: date, what happened, evidence reference. Oldest first. |
| 3 | 03-bills/ | Every bill in the disputed window, named by date. Full PDFs, not screenshots of balances. |
| 4 | 04-readings/ | Meter photos with the serial number visible, plus your submitted readings with dates. |
| 5 | 05-correspondence.pdf | Emails and chat transcripts in date order. Include your complaint and their final response. |
| 6 | 06-deadlock.pdf | The deadlock or final response letter, complete, including the escalation wording. |
Two rules that matter more than the list: one issue per case, and every claim carries a date. A complaint that bundles a back bill, a smart meter fault and a rude adviser into one submission takes longer and is more likely to be partly rejected than three clean issues would be. If you genuinely have three problems, lead with the one with the clearest financial loss.
Open the evidence checklist to work through it item by item.
What genuinely speeds a case up
Ask for the deadlock letter early
At week four, if the supplier has stopped responding: “Please confirm whether this is your final response, or issue a deadlock letter so I can refer the matter.” It costs nothing and can save a month.
One issue, one case
Splitting three problems into three narrow cases usually resolves all three faster than one bundled case resolves any of them.
Name the remedy in numbers
A specific figure and a specific corrective action can be granted. A request to “sort it out” requires the investigator to construct your case for you.
What does not help
Volume. Copying in executives. Repeating the complaint on social media. Adding new issues mid-case — that restarts the evidence exchange and can add a month.
What the Ombudsman can decide, and what it cannot
A large share of rejected cases are rejected on scope rather than on the facts. Reading this before you submit saves weeks.
In scope
- Billing accuracy, including back bills and catch-up bills
- Meter readings, meter faults and smart meter data failures
- Direct debit levels and how a credit balance was handled
- Switching problems, erroneous transfers and final bills
- Debt handling, payment plans and how you were treated
- Customer service failures, delays and repeated broken promises
Out of scope
- The level of prices or the price cap itself — that is Ofgem's territory, not a dispute
- Complaints about a supplier you have never been a customer of
- Anything already before a court, or already decided by the Ombudsman
- Cases referred more than 12 months after the deadlock or final response letter
- Products and services outside gas and electricity supply, such as some boiler cover
- Compensation for distress at a level a court would award — awards are capped
The twelve-month referral deadline catches people out. If you received a deadlock or final response letter and then spent a year arguing with the supplier instead of escalating, the case can be out of scope by the time you get there. If a letter looks like a final position, diary the date immediately.
Frequently asked questions
Can I go to the Energy Ombudsman immediately?
Usually no. You normally need to complain to your supplier first and wait up to 8 weeks unless the supplier sends a deadlock or final-position letter earlier.
Does the 6-week average mean my case will finish in 6 weeks?
No. It is an average after evidence is received. Complex billing disputes, missing evidence and multiple issues can take longer.
Should I keep paying while waiting?
Ask your supplier what undisputed amount to pay and keep a written record. Do not ignore bills without asking how the disputed balance should be treated.
Is the gas ombudsman different from the electricity ombudsman?
No. Gas ombudsman, electricity ombudsman, utilities ombudsman and energy supplier ombudsman all describe the same body: the Energy Ombudsman. One service, one process, one timeline for both fuels.
Is the eight-week wait definitely changing to six?
The government confirmed it on 17 June 2026 in its response to the Fairer, faster redress consultation, but the change requires legislation and is not in force yet. Plan around eight weeks and re-check if your complaint is still running months from now.
How long do I have to refer my case after a deadlock letter?
Twelve months from the date of the deadlock or final response letter. Diary that date as soon as the letter arrives, because continuing to argue with the supplier does not pause the clock.
Does the Ombudsman charge me anything?
No. The service is free to consumers. It is funded by the suppliers, which is also why a supplier would generally rather resolve a complaint than have it referred.
Can I chase the Ombudsman if my case is taking too long?
Yes, and you should ask what stage it is at and what it is waiting for. Usually the answer is that it is waiting on the supplier, which is worth knowing because it tells you the delay is not on your side.
Official sources used for this page
BillDecoded translates official process and billing information into practical checks. It is not affiliated with the Ombudsman, Ofgem, Citizens Advice, Which? or any supplier.
Energy Ombudsman timing, stage by stage
Most people ask how long the energy, gas, electricity or utilities ombudsman takes — it is the same service, and the same rough timeline applies. Expect around 6–8 weeks for a decision once your case is accepted, though complex billing or back-billing disputes can run longer.
What speeds it up or slows it down
| Speeds it up | Slows it down |
|---|---|
| A narrow, single issue | Multiple mixed issues in one case |
| A clear timeline and dated evidence | Missing meter readings or letters |
| A specific remedy you are asking for | Vague 'sort it out' requests |
| Prompt replies to the investigator | Late or partial responses |
Gas, electricity, utilities — it is all the same Ombudsman
People search for this in a dozen ways, so to be clear: in the UK there is one body handling household energy complaints. These all mean it:
Gas ombudsman
Same service, same timings.
Electricity ombudsman
Same service, same timings.
Utilities ombudsman
The older name people still use.
Energy supplier ombudsman
Same service again.
So "how long does the gas ombudsman take", "how long does the electricity ombudsman investigation take" and "how long does the energy supplier ombudsman take to respond" all have the same answer — the one on this page. Water and communications have their own separate schemes.
How the investigation actually works
Knowing the stages is the fastest way to understand where your case is and why it might be sitting still. This section absorbs what used to be a separate page on the investigation process.
| Stage | What happens | What decides the speed |
|---|---|---|
| Eligibility check | The service confirms your complaint is in scope and that the supplier has had its chance to resolve it. | Whether you have a deadlock letter or have passed the 8-week window. |
| Evidence request | Both you and the supplier are asked for documents and an account of events. | How complete your first submission is. Incomplete packs restart this stage. |
| Supplier response | The supplier sends its version, billing history and system notes. | Entirely outside your control, and a common source of delay. |
| Assessment | An investigator weighs both accounts against the rules and the supplier's obligations. | How many separate issues you bundled together. One issue resolves faster than four. |
| Proposed outcome | You are told what the investigator intends to decide and usually invited to comment. | Whether either side raises new material at this point. |
| Final decision and remedy | A binding outcome if you accept it, with specific actions for the supplier. | Complexity of the remedy — a rebill takes longer to verify than an apology. |
What makes a case slow, and what you control
| Factor | Effect on timing | In your control? |
|---|---|---|
| Several complaints bundled into one | Significant. Each strand needs separate assessment. | Yes — split them. |
| Missing meter photos or bill PDFs | Significant. Triggers another evidence round. | Yes. |
| No clear remedy requested | Moderate. The investigator has to infer what you want. | Yes — state it plainly. |
| Back-billing or long estimated periods | Large. Years of reading history must be reconstructed. | No. |
| Smart meter data disputes | Large. Technical data has to be pulled and interpreted. | No. |
| Slow supplier response | Large. | No. |
| Escalating before you are eligible | Total — the case is rejected and you start again. | Yes. |
How to give yourself the fastest possible case
- One complaint, one issue. If the bill is wrong and the direct debit is wrong and customer service was poor, lead with the one that costs you money.
- Build the pack before you escalate. Bills as PDFs, meter photos with the serial number visible, your reading log with dates, and the full complaint thread.
- Write one timeline. Dated, factual, no commentary. This single document does more than any amount of explanation.
- State the remedy in numbers. "Rebill 12 March to 4 August using reading 41,208 and refund the £186 overcharge" beats "sort out my account".
- Send it once, complete. Drip-feeding evidence is the most common self-inflicted delay.
Templates that already follow this shape: complaint letters, wrong meter reading, back billing.
Frequently asked questions
How long does the energy ombudsman take?
The supplier normally has up to 8 weeks to resolve your complaint first, unless it issues a deadlock or final-position letter sooner. Once the Ombudsman has accepted the case and received evidence from both sides, many disputes are resolved in around six weeks, though billing, back-billing and smart meter cases often take longer.
How long does the gas ombudsman take?
The same. Gas and electricity complaints in Great Britain go to the same energy scheme, so the timings on this page apply whichever fuel your complaint concerns.
How long does the utilities ombudsman investigation take?
"Utilities ombudsman" is an older name for the same energy service, so the answer is unchanged: roughly six weeks after evidence is in, longer for complex billing cases.
Why is my case taking longer than six weeks?
Usually one of four reasons: several issues were bundled into one complaint, evidence arrived in stages, the supplier was slow to respond, or the case involves back billing or smart meter data that has to be reconstructed.
Can I escalate before 8 weeks?
Yes, if the supplier has sent a deadlock or final-position letter confirming it will take no further action. Keep the full letter — you will be asked for it.
Does complaining more often speed it up?
No, and it usually slows things down. Additional emails add material the investigator has to read. A single clear timeline and evidence pack is faster.
Is the Energy Ombudsman free?
Yes, it is free for consumers. The scheme is funded by the industry, not by the people bringing complaints.