Cheapest renewable electricity tariff for UK homes
Find the best-value renewable electricity deal for your home based on your postcode, meter type and payment method — with clear caveats on what “100% renewable” really means.
- Whole-of-market comparisons for UK households (not business energy)
- See estimated costs by region, payment type and meter (including smart & prepay)
- Understand green tariff claims, tariffs with exit fees, and when fixed deals can cost more
Estimates only. Availability, rates and terms vary by supplier, region, meter and credit checks. “Renewable electricity” usually refers to the supplier’s certificates, not a direct wire from a wind farm.
Fast answer: “cheapest renewable” depends on your postcode, meter and payment type
In the UK, the cheapest renewable electricity tariff for homes is usually the lowest-priced tariff available to you that is marketed as renewable (often “100% renewable electricity”), once you account for your region, payment method (Direct Debit vs pay-on-receipt), meter type (smart, traditional, or prepayment), and tariff structure (single-rate vs Economy 7/EV).
Important: “100% renewable electricity” typically means the supplier matches the electricity it supplies with renewable certificates (REGOs). Your home still draws from the national grid mix.
Key takeaways (what usually makes it cheapest)
- Direct Debit tariffs tend to be cheaper than cash/cheque or pay-on-receipt.
- Single-rate is often cheapest unless you can shift meaningful use to off-peak.
- Fixed deals can be good for certainty, but the cheapest option can also be a variable tariff (rates can change).
- Unit rate vs standing charge: “cheap” depends on your usage level — low users can be hit by higher standing charges.
Quick checks before you compare
- Your postcode (sets regional network costs in the unit rate/standing charge).
- Whether you pay by monthly Direct Debit, on receipt, or use prepayment.
- Your meter: smart, standard credit, Economy 7, or smart prepay.
- Any exit fees on your current tariff (or if you’re within a fixed term).
Two realistic cost scenarios (examples, not quotes)
These illustrations show why the “cheapest renewable tariff” can differ by household. Figures are estimated and simplified to help you think through the trade-offs.
Scenario A: Flat, low usage (standing charge matters)
- Assumptions
- 1–2 bed flat, electricity only. 1,800 kWh/year. Single-rate. Monthly Direct Debit. Example standing charge 55p/day and unit rate 25p/kWh.
- Estimated annual cost
- Standing charge: 0.55 × 365 = £200.75
Usage: 1,800 × £0.25 = £450.00
Total ≈ £650.75/year - What to watch
- A tariff with a slightly higher unit rate but much lower standing charge could be cheaper for low usage.
Scenario B: EV or storage heater (off-peak can help)
- Assumptions
- Household uses 4,200 kWh/year. 40% off-peak on an Economy 7/EV-style tariff. Example day rate 28p/kWh, night rate 14p/kWh, standing charge 55p/day.
- Estimated annual cost
- Standing charge: 0.55 × 365 = £200.75
Day usage: 2,520 × £0.28 = £705.60
Night usage: 1,680 × £0.14 = £235.20
Total ≈ £1,141.55/year - What to watch
- If you can’t reliably shift usage, off-peak tariffs can become more expensive than single-rate.
Numbers are illustrative and exclude any one-off credits/bonuses. Rates vary by region and supplier, and may change on variable tariffs.
Compare renewable electricity tariffs for your home
To find the cheapest renewable electricity tariff you can actually switch to, we need a few details. We’ll use them to show eligible tariffs, estimated annual costs and key terms like exit fees.
Tip: If you don’t know your annual kWh usage, you can still compare using typical usage for your home size. Your exact quote can differ from estimates.
What counts as “renewable” on this page?
We treat a tariff as renewable where the supplier markets the electricity as renewable (for example, “100% renewable electricity”). Many suppliers evidence this with Renewable Energy Guarantees of Origin (REGOs). Some suppliers go further, such as investing in generation or buying power directly from specific renewable sites.
If you want the lowest price
- Consider variable renewable tariffs as well as fixed
- Check standing charge vs your kWh use
- Watch for exit fees on fixed deals
If you want stronger green credentials
- Look for suppliers that invest in renewables
- Check fuel mix disclosures and annual statements
- Consider independent advice (see sources)
Get your quote
Enter your details to compare available renewable electricity tariffs. We’ll only use them to progress your comparison and contact you about your quote.
Comparison table: what “cheap renewable” can look like
Prices change frequently, so we don’t publish a single “the cheapest tariff” list. Instead, use this table to decide which type of renewable tariff is most likely to be cheapest for your situation.
| Tariff type | Who it can be cheapest for | Typical trade-offs | Key checks |
|---|---|---|---|
| Variable renewable (single-rate) | People who want flexibility and may switch again soon | Rates can change; may not be best for budgeting | Standing charge; how price changes are communicated; any loyalty discounts |
| Fixed renewable (12–24 months) | Households prioritising price certainty | May include exit fees; can become uncompetitive if market prices fall | Exit fees; fixed end date; what happens at end of term |
| Renewable Economy 7 / EV | EV owners, storage heaters, or those who can shift usage off-peak | Day rate often higher; can cost more if you don’t use off-peak enough | Your day/night split; meter compatibility; off-peak hours |
| Green add-on / matched certificates | People who want a renewable claim at lowest cost | Green credentials can vary; “100% renewable” may be via certificates only | Supplier fuel mix and disclosures; how renewable claims are evidenced |
Decision checklist: who it suits
- Tenants: you can usually switch if you pay the bill, but check your tenancy and meter access (especially prepay).
- Low users: prioritise standing charge and any minimum monthly payments.
- EV / heat pump / electric heating: consider time-of-use/E7 if you can move usage off-peak.
- Budgeting: fixed tariffs can help, but check exit fees and end-of-fix rates.
Who it may not suit (or needs extra checks)
- Prepayment: fewer tariffs and not all suppliers support all prepay types.
- Complex meters: some multi-rate or legacy set-ups need specialist support before switching.
- Debt on the meter: you may need to clear or transfer it (supplier rules vary).
- Priority Services Register needs: always check support for vulnerable customers.
Costs, exclusions and common pitfalls (UK-specific)
These are the most common reasons a “cheap renewable tariff” quote doesn’t work out as expected once you read the terms.
1) Standing charge can dominate your bill
If you’re a low user (small flat, away often), a tariff with a low unit rate but high standing charge may be poor value. Compare estimated annual cost, not just p/kWh.
2) Payment method pricing (Direct Debit vs on receipt)
Some tariffs are only available (or cheaper) with monthly Direct Debit. If you prefer paying on receipt, make sure you compare like-for-like.
3) Meter eligibility and tariff type mismatches
Economy 7/time-of-use tariffs depend on the right meter setup. If your off-peak hours don’t match your routine, the “cheapest” quote can become expensive.
4) Exit fees and end-of-fix behaviour
Fixed renewable tariffs may include exit fees. Also check what happens at the end of the fix (you’ll usually move to a standard variable tariff unless you switch again).
5) “Green” wording can be inconsistent
Some tariffs are “100% renewable electricity” (often certificate-backed). Others are “green” because they fund projects or carbon offsets. Decide what you mean by renewable before choosing.
6) Regional differences are real
Your postcode affects network costs. Two households using the same kWh can see different unit rates and standing charges in different regions (England, Scotland and Wales).
EnergyPlus check: When you compare with us, we surface key terms such as tariff length, whether it’s fixed/variable, and notable fees where provided by suppliers. Always read the supplier’s tariff information label before switching.
FAQs: cheapest renewable electricity tariffs (UK homes)
Is “100% renewable electricity” the same as green energy delivered to my home?
Not exactly. Your home draws electricity from the national grid mix. “100% renewable” usually means the supplier matches your electricity with renewable certificates (such as REGOs) and accounts for it in its fuel mix reporting.
Are renewable electricity tariffs always more expensive?
No. Some renewable tariffs are priced very competitively. The final cost depends on unit rate, standing charge, your region, and whether the tariff is fixed or variable.
Can I get a renewable tariff with a prepayment meter?
Sometimes, yes — but choice can be limited and eligibility depends on your prepay type (key/card/smart prepay), supplier support, and whether you have debt on the meter.
What’s the best tariff if I have an EV?
If you can charge off-peak, EV/time-of-use tariffs may reduce costs. Check the off-peak window, day rate, standing charge, and whether your meter supports the tariff. If you can’t shift charging, a single-rate renewable tariff may be better.
Will switching to renewable electricity cut my carbon footprint?
It can support renewable generation depending on how the supplier procures energy and invests. But the grid mix still supplies your home at any moment. If your goal is impact, look for suppliers that publish strong transparency on procurement and additionality, and consider reducing usage too.
Do I lose power when I switch supplier?
No, switching shouldn’t interrupt your supply. You keep using the same wires and infrastructure; only billing and customer service changes. If anything goes wrong, consumer protections apply.
How quickly can I switch to a renewable tariff?
Timescales vary. Many switches complete within a few working days, but it can take longer depending on meter details, supplier processes, or if there’s an objection (for example, some debt situations). Your new supplier should keep you updated.
What details do I need to compare accurately?
Ideally: your postcode, current tariff details, payment method, meter type (single-rate, Economy 7, smart, prepay) and annual electricity usage in kWh (from bills or your online account). If you don’t have kWh, you can still compare using estimates.
Trust, methodology and sources
How we assess “cheapest renewable electricity tariff”
- Eligibility first: We focus on tariffs available to UK households based on region (postcode), meter type and payment method. A tariff that looks cheap but isn’t available to your meter/payment type isn’t “cheapest” for you.
- Estimated annual cost: We compare using estimated annual cost where possible (standing charge + unit rate × usage). For multi-rate tariffs, we consider the day/night split you provide (or an estimate if you don’t know it).
- Terms that change the true cost: We check for exit fees, fixed end dates, and notable conditions (e.g., Direct Debit requirements) because these can change the value of the deal.
- Renewable claim: We classify a tariff as renewable where the supplier markets it as renewable electricity. We highlight that renewable claims are often certificate-backed and can vary in depth (certificate matching vs direct procurement/investment).
- We avoid “too-good-to-be-true” promises: We don’t guarantee savings. We encourage checking the tariff information label and supplier terms before switching.
Limitations and caveats (please read)
- Prices move: Energy tariffs can change frequently; any “cheapest” result is time-sensitive.
- Region matters: Standing charges and unit rates differ by electricity region; national averages can mislead.
- Usage assumptions: If you estimate your kWh or off-peak split, your actual cost may differ.
- Renewable definitions: A “renewable” label doesn’t always mean the same procurement approach between suppliers.
Sources (UK)
- Ofgem (UK energy regulator) — guidance on switching, consumer protections and market rules.
- Citizens Advice: energy — practical help on bills, switching, smart meters and complaints.
- GOV.UK: switching energy supplier — overview of the switching process.
Ready to find the best-value renewable electricity tariff?
Compare tariffs available for your postcode and meter, then switch with confidence using clear, UK-specific checks.
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