Switching to a green energy tariff is one of the easiest ways to reduce your carbon footprint without changing your daily habits. But not all “green” tariffs are created equal, some are genuinely renewable, while others rely on offsetting or certificates that do not always tell the full story.
This guide explains what makes a tariff truly green, how suppliers prove their eco credentials, and how to compare 100% renewable and carbon-neutral energy deals with Simply Switch.
A green energy tariff is one where your electricity (and sometimes gas) is matched with renewable or carbon-neutral sources.
Most green electricity tariffs are backed by 100% renewable generation, which can include power from wind, solar, hydro, or other clean sources.
Because fully renewable gas is harder to produce, many suppliers offer green or carbon-neutral gas:
Dual fuel and electricity-only options are available, and Simply Switch can help you compare both.
All electricity, renewable or otherwise, travels through the same National Grid. So, even if you are on a 100% renewable tariff, the power coming into your home is a mix.
The difference is how your supplier sources and matches your usage:
If you care about impact as well as image, look for suppliers that invest directly in UK-based renewable generation.
Not every tariff that calls itself “green” lives up to the name.
To make sure you are getting what you pay for, check the supplier’s fuel mix page, and look for clear evidence of renewable generation or offset standards.
Electricity from renewable sources such as wind, solar, hydro, or tidal is genuinely low carbon. On some tariffs, suppliers guarantee that 100% of your usage is matched with renewable generation.
True biomethane content in the UK is limited, so many “green gas” tariffs rely partly or entirely on offsetting. Check the breakdown before choosing.
Green tariffs are often priced competitively with standard deals, though costs depend on market conditions and the supplier’s sourcing approach.
When comparing tariffs, always check:
Simply Switch’s comparison tool helps you see total annual costs alongside renewable content and contract details.
The table below is a live list of the latest green energy tariffs on the market today.
| Supplier | Tariff Name | Estimated Annual Bill |
|---|---|---|
| So Energy | So Larch One Year – Green | £1,553.27 |
| Ecotricity | EcoFixed - 1 Year Jan 26 v1 | £1,572.20 |
| So Energy | So Larch 18 Month – Green | £1,576.22 |
| London Power | my london 12m fixed November 2025 v2 | £1,620.01 |
| So Energy | So Larch Two Year – Green | £1,640.91 |
| E.ON Next | Next Gust 12m V42 | £1,643.09 |
| Octopus Energy | Octopus 12M Fixed November 2025 v2 | £1,647.01 |
| Co-op Energy | Co-op 12M Fixed November 2025 v2 | £1,647.01 |
| Co-op Energy | Co-op Community Power 12M Fixed November 2025 v2 | £1,647.01 |
| So Energy | So Green Tracker | £1,702.85 |
Results vary by region, usage, and payment method, so it is important to compare based on your postcode.
Compare green energy prices today for your own area and usage.
If you generate your own renewable electricity through solar panels, you can also earn money for what you export back to the grid under the Smart Export Guarantee (SEG).
SEG rates vary by supplier, so it is worth comparing both your import and export options together.
Choosing the best green deal means balancing environmental credentials with overall value.
When comparing, prioritise:
On Simply Switch, you can filter results to show eco-friendly tariffs only, view each supplier’s renewable percentage, and see how their sourcing compares.
A green energy tariff lets you cut your carbon footprint and support renewable generation without sacrificing value.
To make sure your choice is truly sustainable, always check how your supplier sources its energy, whether it uses direct PPAs or only REGO certificates, and how transparent its green gas offsets are.
Once you have found the right balance of eco credentials and price, switching is simple.
No – the power you use still comes from the shared grid, but your supplier ensures an equivalent amount of renewable electricity is generated elsewhere.
A Renewable Energy Guarantee of Origin (REGO) is proof that your supplier