Ofgem prepayment meter price cap rates this month
See how the Ofgem energy price cap applies to prepayment meters (pay-as-you-go), what you should expect to pay per kWh and per day, and how to check if a different tariff could suit you better.
- What the price cap is (and isn’t) for prepayment customers in Great Britain
- How to estimate your monthly cost using unit rates + standing charges
- Common pitfalls: emergency credit, debt recovery, and standing charge surprises
Rates vary by region and payment type. The price cap is a limit on unit rates and standing charges (not a fixed bill). Great Britain only (England, Scotland, Wales).
Fast answer: what are the Ofgem prepayment price cap rates “this month”?
Ofgem updates the energy price cap every quarter (not monthly). That means your maximum unit rates (p/kWh) and standing charges (p/day) under the cap typically stay the same throughout the quarter, unless your supplier changes your tariff for another reason.
Important: The cap is not a cap on your total bill. Your actual cost depends on how much energy you use, your region (distribution area), and the tariff structure (including any debt repayment on the meter).
Where the cap applies
Applies to standard variable tariffs (SVTs) and default tariffs, including many prepayment tariffs in Great Britain. Northern Ireland has a different regulator and market.
What to look for on your meter/top-up receipt
Check your electricity unit rate, gas unit rate, and standing charge. If you have debt, part of each top-up may be taken for recovery.
Quick estimate (rule-of-thumb)
Your monthly cost ˜ (kWh used × unit rate) + (standing charge × days). This guide shows worked examples below.
Have your postcode and supplier name to hand for the most accurate comparison.
Compare prepayment tariffs (whole-of-market) — in minutes
If you’re on a prepayment meter, you may still have options — including smart prepay and, in some cases, switching to monthly direct debit (subject to supplier checks and your setup).
Before you start: The Ofgem cap differs by region and payment method. We’ll use your postcode to show what’s available where you live and to estimate costs using the right regional charges.
How switching works for prepayment meters (plain English)
- Tell us your postcode and usage basics. We’ll match regional network charges and tariff availability.
- We show estimated costs based on unit rates + standing charges (and any tariff features).
- You pick a tariff. Your new supplier manages the switch. Your meter type may determine whether you stay prepay or can move to credit.
You’ll always see the tariff details before submitting. Estimates are based on the information you provide and supplier tariff terms.
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No obligation. We use your details to return relevant tariffs and contact you about your quote.
If you’re trying to find your current rates
On smart prepay: check your in-home display (IHD), supplier app, or online account for unit rates and standing charges.
Some suppliers show a daily standing charge as a separate line; others show it within tariff details.
On key/card meters: your top-up receipt may show tariff details. You can also ask your supplier for your current unit rate and standing charge.
If your meter is collecting debt, ask how much is being taken per top-up or per day.
Price cap vs prepayment tariffs: what to compare
The Ofgem cap sets a maximum for standing charges and unit rates on capped default tariffs. Some fixed deals or special tariffs may be below the cap. The best way to assess value is to compare like-for-like on your usage.
| What you’re comparing | What the cap does | What to check on a tariff | Why it matters for prepay |
|---|---|---|---|
| Unit rate (p/kWh) | Capped max on default/SVT tariffs | Electricity & gas unit rates; any time-of-use rates | High users feel unit-rate differences more |
| Standing charge (p/day) | Capped max on default/SVT tariffs | Standing charge for each fuel; how it’s applied on prepay | You pay it even with low/zero usage |
| Meter type support | Doesn’t guarantee eligibility | Smart prepay compatibility, key/card support, credit meter options | Switch outcomes can differ depending on meter and supplier process |
| Debt & emergency credit | Not covered by the cap | Any repayment rate, friendly credit hours, emergency credit rules | Can reduce how much of each top-up goes to energy |
| Exit fees & contract length | Cap doesn’t control exit fees | Fixed-term length, exit fees, price protection, how prices may change | Leaving early could cost more than you save (estimated) |
Decision checklist: when comparing is worth it
- You're on a default/SVT prepayment tariff and want to check if anything is lower (even slightly).
- You’ve moved home, changed household size, or your usage has changed significantly.
- You have (or can get) a smart meter and want access to smart prepay tariffs and easier top-ups.
- You’re considering switching payment method (prepay ? monthly) and want to see estimated differences.
When it may not suit you (yet)
- You have a complex debt setup on the meter and need supplier support first to understand recovery rates.
- Your tenancy or landlord arrangement restricts changes (e.g., you can’t change meter type without permission).
- You’re on a fixed tariff with exit fees and any potential gain is likely to be outweighed by leaving early.
- You’re in Northern Ireland (different market and regulator).
Tip: If a tariff headline looks “cheap”, confirm the standing charge. For low users (e.g., small flats), standing charges can be a big share of the bill.
Two realistic prepayment scenarios (with numbers)
These examples are illustrative to show how unit rates and standing charges combine. Your actual rates depend on your region, tariff, and payment setup (including any debt collection on your meter).
Scenario A: small flat, electricity-only prepay
- Assumed usage
- 180 kWh/month
- Assumed unit rate
- 26p/kWh (estimated)
- Standing charge
- 60p/day (estimated)
- Estimated monthly cost
- (180×£0.26) + (30×£0.60) = £46.80 + £18.00 = £64.80
In low-usage homes, the standing charge can make up a large portion of the monthly cost.
Scenario B: 2–3 bed home, dual-fuel prepay
- Assumed electricity usage
- 310 kWh/month
- Assumed gas usage
- 1,000 kWh/month
- Assumed unit rates
- Electric 25p/kWh, Gas 6.5p/kWh (estimated)
- Standing charges
- Electric 60p/day, Gas 32p/day (estimated)
- Estimated monthly cost
- (310×£0.25)+(1000×£0.065)+(30×£0.60)+(30×£0.32)=£77.50+£65.00+£18.00+£9.60=£170.10
Higher usage increases the impact of unit rates. Even a small p/kWh change can add up over a year (estimated).
Caveat: These examples do not include meter debt recovery, emergency credit fees/repayment, or any supplier-specific adjustments. If your meter is repaying debt, the amount you need to top up to stay in credit may be higher.
Extra costs, exclusions, and common pitfalls (prepayment)
Prepayment meters can be straightforward day-to-day, but there are a few areas where costs can feel unexpected. Here’s what to watch for when interpreting the price cap and your balance.
Standing charge still applies
Even if you use very little energy, standing charges accrue daily. On some prepay setups, this can reduce your balance each day.
Debt recovery can reduce top-ups
If you owe money to the supplier, the meter may be set to take a fixed amount per top-up or per day. This is separate from price-capped energy rates.
Emergency credit is not “free”
Emergency credit can help prevent disconnection, but you usually need to repay it when you next top up (and standing charges still apply).
Not all tariffs are covered by the cap
The Ofgem cap primarily limits rates on default tariffs (including SVTs). Some fixed deals and special tariffs are priced differently and may not be “price-capped” in the same way.
When comparing, focus on the estimated annual cost for your usage and the tariff terms, not whether it’s labelled “capped”.
Regional differences are real
Electricity standing charges and unit rates can vary across distribution regions. Two neighbours in different regions can have different capped maximums.
That’s why we ask for your postcode when you compare.
If you’re struggling to top up: You may be able to get support, including help from your supplier and independent advice. See Citizens Advice guidance on paying for energy bills and dealing with prepayment meters.
FAQs: Ofgem price cap and prepayment meters
1) Is the Ofgem price cap updated every month?
No. Ofgem sets the price cap quarterly. People often search “this month” because bills and top-ups change frequently, but the cap itself usually changes on the quarterly update dates.
2) Does the cap guarantee my prepay tariff is the cheapest available?
No. The cap sets a maximum for certain tariffs — it doesn’t guarantee you’re on the lowest deal. Some tariffs can be below the cap, and availability can depend on your meter type and postcode.
3) Why can my friend’s prepayment rates be different to mine?
Rates vary by electricity distribution region, which is linked to postcode. They can also differ by supplier, tariff type, and whether you have single-rate or a special meter arrangement.
4) Can I switch supplier with a prepayment meter?
Often, yes — but it depends on the supplier and your circumstances. If there’s outstanding debt on the meter, switching may be restricted until it’s repaid or handled via an agreed process. Smart prepay can make switching and top-ups easier in some cases.
5) What’s the difference between a prepayment meter and “smart prepay”?
A traditional prepayment meter typically uses a key or card. Smart prepay uses a smart meter configured for pay-as-you-go, often allowing app top-ups, near real-time balance updates, and easier tariff management (supplier features vary).
6) Does the price cap include VAT?
Domestic energy prices are generally shown including VAT (typically 5% for households). Supplier presentations can vary, so if something looks off, ask whether the figure includes VAT and what assumptions are being used.
7) Can I move from prepay to monthly billing (credit meter)?
Sometimes. Suppliers may run checks and may require the meter to be changed or reconfigured (especially from key/card to smart/credit). If you rent, you may also need your landlord’s permission for meter changes.
8) Why does my balance drop even when I’m not using energy?
Usually because standing charges are being applied daily and/or the meter is set to recover debt. If you’re unsure, ask your supplier for a breakdown of daily charges and any recovery settings.
9) Does the Ofgem cap apply in Northern Ireland?
No. Northern Ireland’s energy market is regulated separately. This guide is for Great Britain (England, Scotland, Wales).
Trust, methodology and sources
Editorial accountability
- Written by
- EnergyPlus Editorial Team
- Reviewed by
- Energy Specialist
- Last updated
- April 2026
How we assess “price cap rates this month”
This page is designed to answer a common query safely and accurately:
- We treat “this month” as “the current quarter’s cap period” because Ofgem sets cap levels quarterly.
- We focus on what users can verify: unit rates (p/kWh), standing charges (p/day), and tariff terms from their supplier.
- We use worked examples with clearly stated assumptions to show how costs build up.
Limitations: We do not publish a single set of “cap rates” here because capped maximums vary by region and tariff detail. For accuracy, compare using your postcode and confirm your exact rates with your supplier.
Primary sources (UK)
- Ofgem: Energy price cap — official explanation and cap updates.
- Citizens Advice: Energy supply and help with bills — practical consumer guidance.
- GOV.UK — government services and support information (where applicable).
We also cross-check supplier-facing tariff presentation guidance and consumer FAQs for clarity, but we prioritise regulator and independent advice sources.
Want a clearer answer than “what are the rates this month”?
Get a personalised view using your postcode, meter type and usage. We’ll show estimated costs across available tariffs so you can decide with confidence.
Note: The secondary button returns you to the explainer section. If you need help right now with topping up or debt on a prepayment meter, consider independent support via Citizens Advice.
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