What is a green energy tariff?

A green energy tariff supplies electricity backed by renewable sources such as wind, solar or hydro, typically evidenced by Renewable Energy Guarantees of Origin (REGOs). Some tariffs also include green gas (biomethane) or offset the carbon from natural gas.

How do I compare green energy tariffs effectively?

Compare unit rates (p/kWh) and standing charges, renewable content (e.g. 100% renewable electricity), tariff type (fixed vs variable), contract length, exit fees, payment method discounts, and any perks like carbon offsetting or bundled smart meter plans. Use your actual annual usage in kWh for the most accurate quote.

Are green energy tariffs more expensive?

Not necessarily. Prices vary by supplier and region. Many green tariffs are now competitively priced and can be similar to or cheaper than standard tariffs, especially if you choose a fixed deal. Always compare total estimated annual cost based on your usage.

Will my energy supply be interrupted if I switch?

No. Switching supplier is seamless and there is no interruption to your gas or electricity. The change happens remotely and you use the same meters, cables and pipes.

How long does it take to switch to a green tariff?

Most switches now complete very quickly, often within 1–5 working days depending on your supplier and meter setup. You have a cooling-off period (typically 14 days) during which you can change your mind.

Do I need a smart meter for a green tariff?

A smart meter is not required for most green tariffs, but it can unlock half-hourly or time-of-use deals and provides more accurate billing. Installation is usually free from your supplier.

What information do I need to get an accurate comparison?

Have your postcode, current supplier and tariff name, annual usage in kWh (from a recent bill or smart meter), meter type (single-rate, Economy 7/10, or smart), and your preferred payment method. This ensures the comparison reflects your real costs.

Is 100% renewable electricity really 100%?

Your home is connected to the national grid, which mixes all generation. On a 100% renewable electricity tariff, your supplier matches your annual consumption with electricity generated from renewable sources and backed by REGOs, so your usage is accounted for as renewable over a year.

What about green gas?

Fully renewable biomethane is limited, so green gas tariffs may include a percentage of biomethane blended with natural gas and/or carbon offsetting of emissions. Check the supplier's fuel mix and whether offsets are independently verified.

Can I switch if I'm in a fixed contract?

Yes, but early exit fees may apply if you leave before the end of the term. In the UK, suppliers cannot charge exit fees in the final 49 days of your contract. Check your current tariff terms before switching.

Compare Green Energy Tariffs in the UK

Find 100% renewable electricity and lower-carbon gas deals from Ofgem-licensed suppliers. Check live prices, see your estimated carbon savings, and switch online in minutes.

100% renewable electricity backed by REGOs
Options for carbon-neutral or biomethane-backed gas
No interruption to your supply when you switch

Compare green tariffs How switching works

Comparison service shows tariffs from Ofgem-licensed suppliers. Prices shown depend on your postcode, meter type, and usage. T&Cs apply.

Compare green energy tariffs now

Enter your details to see live prices for renewable electricity and greener gas tariffs available in your area. Switching is free and takes a few minutes.

Postcode

Current supplier

Meter type

Electricity usage (kWh/year)

Gas usage (kWh/year)

Tariff preference

Property type

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We include tariffs marked as renewable by the supplier (typically backed by REGOs). Always check the supplier's Fuel Mix Disclosure and terms before you switch.

Why choose a green energy tariff?

Lower your carbon footprint

Green tariffs match your electricity use with renewable generation such as wind, solar, and hydro, helping reduce lifecycle emissions compared with fossil-based power.

Support UK renewables

By choosing renewable electricity, you help increase demand for clean generation and encourage suppliers to contract more from UK wind and solar farms.

Comparable convenience and protection

All domestic suppliers are regulated by Ofgem. Switching is seamless with no engineer visit needed in most cases and no disruption to supply.

How green energy tariffs work

Renewable Electricity and REGOs

Suppliers prove the green origin of electricity using Renewable Energy Guarantees of Origin (REGOs). For every megawatt hour of renewable electricity generated, a REGO certificate is issued. When a supplier retires REGOs equivalent to your usage, your electricity is considered matched with renewable generation over a year.

Because the grid is mixed, your home uses the same physical electrons as everyone else. The accounting ensures that an amount equal to your usage is produced from renewables.

Greener Gas options

Green gas tariffs may include a proportion of biomethane injected into the grid, carbon offsetting of remaining emissions, or both. Look for clear information on the percentage of biomethane and the quality of any carbon offsets used.

Transparency and greenwashing

Check the supplier's Fuel Mix Disclosure and annual sustainability reports.
Look for REGOs that correspond to recent UK or European renewable generation.
For gas, understand the split between biomethane and offsets, and whether offsets are independently verified.

Types of green energy tariffs

Fixed-rate green tariffs

Unit rates and standing charges are locked for a set term (e.g., 12 or 24 months). Good for budgeting. Exit fees may apply if you leave early.

Variable-rate green tariffs

Prices can move in line with wholesale and market changes. Usually no exit fee, offering flexibility if you expect prices to fall.

Economy 7/Time-of-Use

Cheaper night rates for homes with storage heaters or flexible consumption. Green versions match usage with renewable certificates and may reward off-peak use.

Smart and EV tariffs

Smart meter required. Some EV tariffs offer cheaper overnight charging windows powered by renewables, ideal for electric vehicle owners.

What a green tariff comparison looks like

Live results change frequently and depend on your postcode, meter type, and usage. The example below is for illustration only. Use our form above for up-to-date offers.

Supplier	Tariff name	Electricity	Gas	Type	Exit fees	Smart meter	Notes
Example Supplier A	Green Fix 12	100% renewable (REGO-backed)	Carbon-offset gas	Fixed 12m	Yes (per fuel)	Not required	Paperless billing discount
Example Supplier B	Eco Variable	100% renewable (mix of wind/solar)	10% biomethane	Variable	No	Optional	No exit fees, flexible
Example Supplier C	EV Green Saver	100% renewable	N/A (electricity only)	Smart time-of-use	Yes	Required	Cheaper off-peak EV charging

See my live green deals Illustrative only. Your comparison will show real suppliers, prices, and terms.

How switching to a green tariff works

1) Enter your details

Provide your postcode and usage. We show tariffs available at your address from Ofgem-licensed suppliers.
2) Compare green deals

Filter for 100% renewable electricity, greener gas, fixed or variable, no exit fees, and more.
3) Apply online

Complete a quick online application. Your new supplier handles the switch with no disruption.
4) Cooling-off and go live

You usually have a 14-day cooling-off period. The switch typically completes within a couple of weeks.

Exact timings can vary by supplier and meter type. Smart meter appointments may be offered but are not always required.

Tips for choosing the best green tariff

Check exit fees if you prefer flexibility.
Match your meter type (single rate, Economy 7, smart) to the right tariff.
Review the supplier's green credentials: REGOs, fuel mix, biomethane percentage, and offset standards.
If you own an EV or can shift usage, consider smart time-of-use or EV-specific tariffs.
Estimate usage accurately to get the most reliable comparison. Your latest bill usually lists annual kWh.

Green energy tariffs FAQs

What makes an electricity tariff "green"?

Green tariffs match your electricity use with renewable generation using certificates such as REGOs. Many suppliers publish a Fuel Mix Disclosure showing the percentage sourced from renewables.

Will I physically receive renewable electricity at home?

No. The grid is a mix of sources, but your supplier ensures an equivalent amount of renewable electricity is produced and attributed to your usage over a year.

Is green gas the same as green electricity?

Not exactly. Green gas may include biomethane injected into the grid and/or carbon offsetting for remaining emissions. Check the tariff details for percentages and standards.

Are green tariffs more expensive?

Pricing varies by market conditions. Sometimes green tariffs are comparable to, or even cheaper than, standard tariffs. Always compare total estimated costs for your usage.

Do I need a smart meter?

Many green tariffs work with traditional meters. Some offers, especially EV and time-of-use tariffs, require a smart meter to track off-peak usage.

Will there be any interruption to my supply when I switch?

No. Your energy is delivered through the same wires and pipes. The switch is administrative and managed by your new supplier.

Can renters switch to a green tariff?

If you pay the energy bill directly, you can typically switch. If your landlord controls the supply, ask for permission or discuss a green option.

Ready to cut carbon and compare live prices?

See the latest 100% renewable electricity and greener gas deals in your area. It only takes a moment to start.

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Have questions? Contact us.

Information on this page is general guidance and not financial advice. Always review tariff terms, pricing, and environmental claims directly with the supplier before switching. Availability and prices change regularly.