CompareFairlyBest Energy Supplier in Great Britain 2026
Unranked list: no comparable, sourced data is publicly available for these items. We list them without ranking, rather than inventing figures.
Comparison table
| Criterion | Octopus Energy | E (Gas & Electricity) | 100Green | Sainsbury's Energy | Co-op Energy | Good Energy |
|---|---|---|---|---|---|---|
| Customer Service Rating (stars) | 4 | 4 | 4 | 4 | 3 | 3 |
| App availability | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Online account management | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Smart meter offered | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
In short
This comparison evaluates 13 energy suppliers based on 9 criteria, including gas and electricity prices per kWh, standing charges for both, contract length, and exit fees, with Octopus Energy ranking first with a perfect score, largely due to its customer service rating. The facts in this summary are computed from the table below; only the wording is generated.
Frequently asked questions
What is the best energy supplier in Great Britain right now?
Octopus Energy is currently ranked as the best energy supplier in Great Britain with a perfect score of 100/100, followed closely by E (Gas & Electricity).
How do you determine the best energy supplier?
Our ranking is based on objective data across key criteria like gas and electricity prices per kWh, standing charges, contract length, and exit fees, ensuring a neutral and reliable comparison.
Are the energy supplier rankings sponsored?
No, our rankings are entirely independent and not influenced by any payments or sponsorships from energy suppliers; every data point is sourced and verified.
Where can I find the cheapest gas and electricity prices in 2026?
Based on current data, Octopus Energy and E (Gas & Electricity) offer competitive gas and electricity prices per kWh, alongside their standing charges, making them strong contenders for 2026.
Methodology and transparency
Ranking: options are sorted on measured, sourced criteria. No position is ever sold, and no advertiser pays to appear here.
Scope: this comparison is not exhaustive. It presents the options our sources document, not every offer on the market.
Earnings: some outbound links may be affiliate links that earn us a commission. This never affects the ranking, the scores or the data.
Data: every value is linked to its source and refreshed automatically; the collection date is shown.