Cheapest green electricity tariff in the UK with no exit fee

1) Green electricity

Look for 100% renewable electricity backed by certificates (typically REGOs). Some tariffs also offer additionality (investment in new renewables), but that’s not always cheaper.

2) £0 exit fees

A no-exit-fee tariff means you can switch away without a leaving charge. It does not mean prices can’t change on variable tariffs.

3) Like-for-like costs

Compare unit rate (p/kWh) and standing charge (p/day) for your region and meter. That’s where “cheapest” is usually decided.

Decision checklist: who a green £0-exit tariff suits

• You want flexibility to move again if prices change.
• You’re renting or may move home and don’t want to risk a leaving charge.
• You’re uncertain whether a fixed deal will still be best in 3–12 months.
• You want to test a supplier’s service before committing to a longer fixed term.

Who it may not suit

• You want price certainty for budgeting (a fixed tariff may be better).
• You have a prepayment meter (fewer deals; some “cheapest” options aren’t available).
• You rely on an Economy 7 pattern and need strong night rates (not all green tariffs are competitive on E7).
• You want “additionality” (e.g., direct investment in renewables) at the lowest cost—those tariffs can cost more.

1) Confusing “no exit fee” with “fixed price”

Most variable tariffs have no exit fee, but prices can change with notice. If you want stable rates, look for a fixed tariff and check whether it has exit fees.

2) Paying by direct debit vs on receipt

Some suppliers price cheaper for monthly direct debit. If you prefer paying on receipt, compare using the same payment method or you may choose a tariff that’s not actually cheapest for you.

3) Economy 7/Economy 10 mismatches

If you have two rates (day/night), check both rates and your usage split. A “cheap” E7 tariff with a high day rate can be expensive if you don’t use enough electricity overnight.

4) Standing charge dominates low usage homes

If you’re a low user (e.g., a small flat), the standing charge can outweigh unit rate differences. Compare estimated annual costs, not just p/kWh.

5) “Green” isn’t always additional renewable generation

Many tariffs are green through certificate matching (REGOs). If you care about additionality, check whether the supplier invests in new renewables or owns generation—these tariffs may not be the cheapest.

6) Not being eligible for online-only deals

Some of the cheapest tariffs are online-only or require paperless billing. If you need paper bills or alternative support, filter accordingly.

Two realistic scenarios (illustrative numbers)

These examples show how tariff structure affects “cheapest”. Figures are illustrative only and not a live quote.

Scenario A: Low user in a 1–2 bed flat (electricity only)

Assume 1,800 kWh/year on a single-rate meter, paying by monthly direct debit.

Tariff 1: 24p/kWh + 70p/day standing charge → ~£920/year (432 + 255.5)

Tariff 2: 26p/kWh + 55p/day standing charge → ~£873/year (468 + 200.8)

What it shows: A slightly higher unit rate can still be cheaper if the standing charge is lower.

Scenario B: Higher user in a family home (electricity only)

Assume 4,200 kWh/year on a single-rate meter, monthly direct debit.

Tariff 1: 24p/kWh + 70p/day standing charge → ~£1,496/year (1,008 + 255.5)

Tariff 2: 26p/kWh + 55p/day standing charge → ~£1,293/year (1,092 + 200.8)

What it shows: Unit rate differences matter more as usage rises, but standing charge still counts.

Math notes: annual standing charge estimated as p/day × 365 ÷ 100. Annual energy cost estimated as kWh × p/kWh ÷ 100. VAT and any discounts may affect real bills.

What to check in the tariff info

• Exit fees: confirm £0 (and whether it’s per fuel)
• Tariff end date: for fixed deals, what happens afterwards?
• Payment method: are rates shown for direct debit?
• Meter compatibility: single-rate vs Economy 7 vs smart requirements
• Green details: fuel mix and how renewable electricity is matched

Is there a single cheapest green electricity tariff in the UK?

No. Prices vary by region (your postcode), usage, meter type (single-rate vs Economy 7), and payment method. The cheapest option is the one with the lowest estimated annual cost for your details at the time you compare.

What does “no exit fee” mean on an electricity tariff?

It means the tariff doesn’t charge a fee just for leaving. It doesn’t stop the supplier changing rates on variable tariffs, and it doesn’t remove exit fees you might owe on your current tariff.

Does a green tariff mean the electricity to my home is 100% renewable?

In the UK, electricity comes from the national grid mix. “Green” tariffs typically mean the supplier matches your usage with renewable generation evidence (often through REGOs). Check the supplier’s fuel mix and tariff wording for transparency.

Are green tariffs always more expensive?

Not necessarily. Some green tariffs can be price-competitive, especially where the supplier’s pricing and standing charges are strong. Tariffs that fund new projects or include additional services may cost more.

Can I get a green tariff if I have a prepayment meter?

Sometimes, but options can be more limited and pricing may differ. If you can move to a credit meter (subject to eligibility and supplier checks), you may have more choice. Always compare using your actual meter type.

Do smart meters make green tariffs cheaper?

A smart meter doesn’t automatically make a tariff cheaper. It can, however, make it easier to access certain deals (including time-of-use tariffs) and reduce estimated bills by providing accurate readings.

How fast can I switch to a no-exit-fee tariff?

Switching times vary. In many cases it can take a few working days, but it can be longer depending on meter type, readings and supplier processes. You’ll be told the expected start date during the switch.

Should I choose fixed or variable if I want no exit fees?

If flexibility is your priority, a variable tariff with £0 exit fee is common. If budget certainty is your priority, a fixed tariff can help, but many fixed tariffs include exit fees—so check the terms carefully.

Editorial details

Written by:

EnergyPlus Editorial Team

Reviewed by:

Energy Specialist

Last updated:

April 2026

How we assess “cheapest green electricity tariff with no exit fee”

To help you find the cheapest option for your home, we focus on the parts of a tariff that drive real bills in Great Britain:

• Eligibility filters: domestic electricity tariffs marketed as green/renewable, with no exit fee stated in tariff terms (where available).
• Like-for-like pricing: we compare unit rates (p/kWh) and standing charges (p/day) based on the user’s region and meter type.
• Estimated annual cost: we use your consumption inputs where provided; otherwise we use illustrative examples (clearly labelled) rather than claiming a universal “cheapest”.
• Tariff type clarity: fixed vs variable and how pricing can change.
• Green transparency: we encourage checking the supplier’s fuel mix disclosure and how renewable supply is evidenced (often via REGOs) rather than relying on marketing alone.