Ofgem price cap April 2027: unit rates (UK) explained
What the April 2027 price cap can and can’t tell you about your energy costs — with practical examples, key caveats (region, meter type, payment method), and how to compare deals confidently.
- See what “unit rates” and “standing charges” mean under the cap
- Check the key factors that change rates (region, fuel, payment, meter)
- Use our comparison form to view whole‑of‑market options for your home
Figures on this page are explanatory and may be estimates. Your actual rates depend on your region, payment method, meter type and tariff terms.
Fast answer: are there “Ofgem price cap April 2027 unit rates”?
Not as a single UK-wide number. Ofgem’s energy price cap sets maximum unit rates (p/kWh) and standing charges (p/day) for default tariffs (including standard variable tariffs) — but the cap levels vary by region, fuel (electricity vs gas), payment method (e.g. direct debit vs prepayment), and sometimes by meter configuration.
Important: April 2027 cap unit rates are not something anyone can state precisely years in advance. Ofgem updates the cap regularly based on wholesale costs and other inputs. This guide explains how to interpret cap unit rates when published, what changes them, and how to compare your actual options.
Key takeaways
- Unit rate (p/kWh) is what you pay for each unit of energy used.
- Standing charge (p/day) is a fixed daily cost (network, metering, policy costs).
- The cap applies to default tariffs, not to every fixed deal.
- Your bill depends on your usage and your tariff, not the headline cap figure.
What to do next (practical)
- Find your current unit rates and standing charges on your bill or online account.
- Note your region (your bill shows your electricity distribution region).
- Compare whole-of-market options based on your home’s details and usage.
Compare tariffs the right way (not just by the cap headline)
When April 2027 price cap rates are published, they’re most useful as a reference point for default tariffs. To work out what you might pay, you still need to match rates to your situation:
1) Your meter
Smart meter, traditional credit meter, prepayment meter, Economy 7/10 — these can change what rates apply.
2) Payment method
Direct debit, cash/cheque, or prepayment have different cap levels and often different tariff pricing.
3) Your region
Standing charges and unit rates vary by electricity distribution region (and for gas, by network area).
4) Your usage
Low users are more sensitive to standing charges; high users are more sensitive to unit rates.
If you have your latest bill handy, you can usually find your unit rates and standing charge in the “Tariff information” section. That’s the best baseline for comparison.
Price cap vs your bill: what the cap actually caps
- It caps unit rates and standing charges
- Ofgem sets maximums for p/kWh and p/day for default tariffs, by region and payment method.
- It does not cap your total bill
- If you use more energy, you pay more. The “typical annual bill” figure is an illustration based on typical usage.
- It may not match your tariff
- Fixed tariffs can be above or below cap levels, and can include different terms (e.g. exit fees). The cap is primarily about protecting customers on default tariffs.
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How April 2027 cap unit rates are structured (and what changes them)
When Ofgem publishes the cap for a period (such as April–June), it provides different maximum unit rates and standing charges depending on customer type. Use the table below as a decision guide for which cap figures you should look up.
This page explains the structure so you can interpret the correct April 2027 rates once announced. For the authoritative cap tables when released, use Ofgem’s cap page (linked in Sources below).
| What varies? | Examples | Why it matters for cap unit rates | What to check on your bill |
|---|---|---|---|
| Region | London, North West, Southern, Scotland, etc. | Network costs differ, changing standing charges and sometimes unit rates. | Your electricity distribution region / “DNO” reference. |
| Payment method | Direct Debit, Standard Credit, Prepayment | Different cost-to-serve and debt assumptions can mean different cap levels. | How you pay (and whether you’re on a prepay meter). |
| Fuel | Electricity only, Gas only, Dual fuel | Each fuel has its own unit rate/standing charge cap; dual fuel is just both combined. | Your tariff details for each fuel. |
| Meter type | Single-rate, Economy 7, Smart prepay | Multi-rate meters can have different day/night unit rates; comparison needs your split usage. | Whether you have more than one electricity unit rate. |
| Tariff type | Standard variable (default), fixed, tracker | The cap is designed for default tariffs; other tariffs can be priced differently with different terms. | Tariff name + whether it’s fixed/variable + end date + exit fees. |
Decision checklist: who this cap info suits
- You’re on a standard variable or other default tariff and want to sanity-check rates.
- You want to understand if a fixed deal is priced reasonably versus default cap levels.
- You’re moving home and need a starting benchmark before you switch.
Who it may not suit (without more detail)
- You’re on Economy 7/10 and don’t know your day/night split.
- You have solar export, EV charging, or heat pump usage patterns that change when you use electricity.
- You need help with debt, arrears, or prepayment emergency credit (specialist support may be better).
Two realistic scenarios (with numbers)
These examples use illustrative rates to show how unit rates and standing charges combine. They are not predictions for April 2027.
Scenario A: low electricity user (standing charge matters)
Assumptions (example only): Electricity single-rate; 1,800 kWh/year. Unit rate 28p/kWh. Standing charge 55p/day.
| Item | Calculation | Estimated cost |
|---|---|---|
| Usage | 1,800 × £0.28 | £504/year |
| Standing charge | 365 × £0.55 | £200.75/year |
| Total | Usage + standing charge | £704.75/year |
What this shows: for lower users, a higher standing charge can outweigh a slightly lower unit rate.
Scenario B: dual fuel, higher usage (unit rate matters)
Assumptions (example only): Electricity 3,100 kWh/year @ 27p/kWh + 50p/day. Gas 12,000 kWh/year @ 7p/kWh + 30p/day.
| Fuel | Usage cost | Standing charge | Estimated total |
|---|---|---|---|
| Electricity | 3,100 × £0.27 = £837 | 365 × £0.50 = £182.50 | £1,019.50 |
| Gas | 12,000 × £0.07 = £840 | 365 × £0.30 = £109.50 | £949.50 |
| Combined | — | — | £1,969.00/year |
What this shows: at higher usage, small differences in p/kWh can have a bigger impact than standing charges.
VAT and discounts: domestic energy prices typically include VAT at 5%. Some tariffs may include discounts or rewards that don’t change the unit rate/standing charge but do affect your net cost.
Costs, exclusions and common pitfalls (April 2027 cap context)
These are the most common reasons people misread cap unit rates or compare tariffs unfairly.
Pitfall 1: Using the UK headline figure
The “typical annual bill” headline is not your bill. It’s based on a typical usage profile and varies by region and payment method.
Pitfall 2: Ignoring standing charges
A tariff with a lower unit rate can still cost more overall if the standing charge is higher (especially for low users).
Pitfall 3: Not matching meter type
Economy 7 users need both day and night rates and an estimate of how much electricity is used at night.
Pitfall 4: Assuming all fixed deals beat the cap
Fixed deals can be higher or lower than cap levels and may include exit fees. The right choice depends on your risk preference and contract terms.
Pitfall 5: Not checking eligibility
Some tariffs are only for new customers, certain meter types, or require direct debit and online billing.
Pitfall 6: Forgetting tariff end dates
When a fix ends, you’ll usually move to a default tariff. Set a reminder to review before the end date.
If you’re struggling to pay, you may be eligible for supplier support, payment plans, or grants depending on circumstances. Citizens Advice has guidance on help if you can’t afford your energy bills. Read Citizens Advice: get help paying your energy bills
FAQs: Ofgem price cap April 2027 unit rates (UK)
1) Can anyone tell me the exact April 2027 cap unit rates today?
No. Cap rates are set closer to the period and depend on wholesale prices and other cost components. What you can do now is understand the structure (region/payment/meter) and be ready to compare when figures are announced.
2) Does the price cap mean my supplier can’t charge more than the cap?
The cap limits prices on default tariffs (including standard variable tariffs) up to a maximum set by Ofgem for your customer type. Fixed tariffs can be priced differently and may include additional terms such as exit fees.
3) Why do cap unit rates differ by region?
A large part of your standing charge (and some unit-rate components) relates to network costs and regional electricity distribution charges. These vary depending on where you live and which network serves your area.
4) Do prepayment meters have different cap rates?
Yes, cap levels can differ for prepayment compared to direct debit or standard credit. If you’re on prepay, make sure you’re looking at the prepayment cap tables for your region.
5) I’m on Economy 7 — how do I compare against the cap?
You’ll need both day and night unit rates (and your standing charge). Comparison is most accurate if you know what proportion of your electricity use is at night. If you don’t know it, your smart meter data or supplier statements may help.
6) Will switching affect my credit balance or debt?
Credit balances are usually refunded by your old supplier after final billing. Debt can complicate switching (especially on prepayment), and suppliers may have rules about transferring. If you’re in difficulty, consider guidance from Citizens Advice before switching.
7) Are exit fees allowed under the cap?
Exit fees are typically a feature of fixed tariffs rather than default tariffs. Always check tariff terms (including exit fees and end dates) before switching.
8) Where can I find the official cap tables when April 2027 figures are released?
Use Ofgem’s official price cap page and documents. They publish detailed tables for unit rates and standing charges by region and payment method. Ofgem: energy price cap
Trust, methodology and sources
Page ownership
- Written by: EnergyPlus Editorial Team
- Reviewed by: Energy Specialist
- Last updated: June 2026
We refresh this guide when Ofgem changes methodology, publishes new cap tables, or when market rules materially change.
How we assess and explain the April 2027 cap unit rates
This page is designed to prevent common misunderstandings about “April 2027 cap unit rates”. We:
- Use Ofgem’s published approach: cap levels vary by region, payment method, fuel, and potentially meter configuration.
- Focus on consumer outcomes: how unit rates + standing charges translate into estimated annual costs.
- Show two worked examples using clearly labelled illustrative figures (not forecasts).
- Highlight limitations and what to check on your own bill for accurate comparison.
Limitations: We cannot know your exact April 2027 rates in advance. Even when cap tables are published, individual tariffs can differ (fixed vs variable), and your costs depend on consumption patterns.
Sources (UK)
- Ofgem: energy price cap — official cap information and supporting documents.
- Citizens Advice: getting a better energy deal — switching rights and practical guidance.
- GOV.UK: energy bills support — government support information (when available/active).
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