Last updated: 1st August 2025
Quick Overview: The main difference between British Gas and Octopus Energy in terms of price is that Octopus Energy offers cheaper fixed and variable tariffs. As of now, Octopus is the more affordable option, making it the better choice for cost-conscious energy consumers comparing the two suppliers.
British Gas and Octopus Energy are the UK’s best-known energy suppliers. British Gas has been a major UK energy supplier for decades.
While Octopus is still relatively new to the market, having been in the energy business for just eight years.
Here, we will compare Octopus Energy and British Gas to see which supplier is better when it comes to price, customer reviews, and more.
Our top rated supplier Octopus Energy is currently offering £50 credit to any new customer that uses our referral link. Click below to see why we rate them so highly and get your £50.
Who is British Gas?
British Gas is the UK’s oldest energy company, with origins dating back to 1812. Now owned by Centrica, it supplies energy to over 11 million homes and businesses. It has long been considered the face of the energy industry and still retains a large share of the gas and electricity market.
However, British Gas has lost ground in recent years to newer, more agile competitors. Although it offers a range of fixed and variable tariffs, it has been slower to innovate in smart tariffs, digital features, and EV-focused plans. Most of its green credentials come through carbon offsetting and the purchase of REGO certificates, rather than direct investment in renewable energy infrastructure.
Who are Octopus Energy?
Octopus Energy launched in 2016 and has grown at an extraordinary pace. It now serves over 7.3 million customers and supplies around 22% of the electricity market in Great Britain.
Octopus sets itself apart by supplying 100% renewable electricity as standard, investing directly in solar, wind, and biogas projects. It also operates its own smart grid and uses proprietary tech (Kraken) to offer better pricing, automation, and customer support.
Its focus on transparency, ease of use, and excellent service has led to numerous awards:
- UK Customer Service Excellence Award
- Which? Recommended Provider (multiple years)
- Uswitch Energy Supplier of the Year
Octopus Energy vs British Gas: Is Octopus Cheaper than British Gas?
We did a like-for-like comparison quote with both suppliers. Our usage/search was based on the following criteria:
- Dual Fuel supply
- Standard Meter
- Medium usage (2,900 kWh of electricity and 12,000 kWh of gas)
- Postcode in the East Midlands
Let us look at how they compare and see if Octopus Energy is cheaper than British Gas or vice versa:
British Gas
On running a quote for British Gas, I was given three different tariff options:
| Tariff Name | Description | Monthly | Exit Fee |
|---|---|---|---|
| Standard Variable | Default tariff, price capped | £146 | £0 |
| Cap Tracker Sep26 | Follows market for 15 months | £142 | £20 |
| Fixed Tariff v84 | 12-month fix, mid-price range | £142 | £100 |
Octopus
The same details were used for an Octopus energy quote. You can see the results below:
| Tariff Name | Description | Monthly | Exit Fee |
|---|---|---|---|
| Tracker Tariff | Price changes daily | £126 | £0 |
| Flexible Octopus | Price capped variable tariff | £145 | £0 |
| 12M Fixed July 2025 v5 | 12-month fixed with no exit fees | £141 | £0 |
*Using an average rate over previous months for both fuels. Only available to existing customers. Source.
Historic Pricing Trends
Looking back 12 months, Octopus tariffs have averaged 10–15% below British Gas. The chart below (data from Ofgem & supplier archives) shows Octopus remaining comfortably beneath the quarterly price cap, while British Gas hugs the cap line.
If you opt for the Tracker tariff, Octopus could be over £20 per month cheaper than British Gas.
British Gas or Octopus: What’s the difference in tariff options?
Here, we compare the tariffs that Octopus and British Gas offer to new customers to see if Octopus or British Gas is better.
At this time, Octopus is offering three tariffs:
British Gas
These are the two tariffs offered by British Gas:
Fixed Energy Tariff
- A fixed tariff rate for 16 or 24 months
- If energy prices increase, the tariff price stays the same
- £50 or £75 exit fee per fuel depending on tariff length
Standard Variable Tariff
- Available to customers who pay via direct debit.
- No end date for the tariff, you can leave with no exit fees
- Variable tariffs that go up and down
- Choose to sign up for PeakSave, a scheme that rewards customers for mindful energy usage.
- Ofgem caps apply
Octopus
Flexible Octopus
– Offers 100% renewable electricity
– No exit fees
Octopus 12M Fixed
– No exit fees
– 100% renewable electricity
Tracker Tariff
– No exit fees
– Only available with a smart meter
– Not available on signing up – see below for more details
Who Is Better for EV Owners?
- Octopus Energy offers Octopus Go and Intelligent Octopus – tariffs with cheap overnight rates (≈ 7.5 p/kWh) that are ideal for charging an electric car.
- British Gas currently offers no dedicated EV tariff.
Winner: Octopus – hands down.
Smart-Meter Roll-out
- Octopus: average install wait ≤ 4 weeks; data generally reliable.
- British Gas: waits of 8–12 weeks common; some users report intermittent data drops.
Leaving & Exit Fees
- Octopus: Most tariffs have £0 exit fee.
- British Gas: £50 – £75 per fuel on fixed deals.
However, given that Octopus have a more diverse range of tariffs and no exit fees should you decide to try a different tariff, Octopus comes out on top for the choice and flexibility in their tariff options.
Who offers the greenest energy?
Octopus has green energy at the centre of their offering. They proudly promote that 100% of their electricity supply comes from renewable resources. But how do British Gas compare?
British Gas
British Gas states they are committed to a greener Britain and the future of generations to come. They are on a mission to become net zero by 2050.
If you choose one of their Green Future tariffs, British Gas will match 100% of your electricity usage with a renewable source such as wind or solar power. However, the electricity supplied to your home will be from a mixed source. (Their Green Future tariffs are currently unavailable).
They also state that 100% of your CO2 footprint will be balanced by carbon-cutting projects around the world and renewable biogas produced from food and farm waste around the globe.
Octopus
Innovative Octopus is already supplying 100% of their electricity from renewable sources. This is standard across all their tariffs. The excellent news for customers is they can do this without being more expensive than other suppliers.
Octopus Investments is responsible for supplying 40% of the solar power generated in the UK and plays a significant role in developing renewable energy solutions.
We can admire both for their green efforts, but Octopus has always had green energy at the forefront of their tariffs, so they win this category!
Octopus Energy or British Gas: Who has better customer reviews?
We looked at Trustpilot to see how customers feel about the service they have received from both Octopus and British Gas. Both companies have 100,000s of genuine reviews:
British Gas score 4.3 out of 5 based on over 290,000 reviews
Octopus Energy score 4.8 out of 5 based on over 650,000 reviews
Each supplier asks their customers to review their service, both good and bad. Both companies respond to negative reviews in the majority of cases.
On reading a selection of the reviews, I noticed that British Gas customers frequently complain about price increases, poor customer service, and a lack of knowledge. However, many customers also seem to be happy with their supply and service.
On the other hand, Octopus fare much better, with most reviews stating that they are helpful and knowledgeable and resolve problems quickly.
Who has the better website and app?
Both suppliers have clean, easy-to-use websites where you can sign up and manage your account online. It’s easy to navigate both websites to find different resources, whether it’s contact information, FAQ, or corporate information.
A popular option now is an App to manage and monitor your energy usage. Both suppliers offer one, and we will take a look at how they compare:
British Gas
In theory, the British Gas App allows you to manage your account, submit a meter reading, view and pay bills, arrange engineer callouts, chat with an advisor, or change tariffs, to name a few. However, the reality seems to be that it’s not functioning as well as it could.
With a score of just 2.6 out of 5 from over 40,000 reviews, there is certainly room for improvement. Customers complain that it crashes frequently, and you cannot reliably use it to manage your account.
Octopus
Octopus has really worked on its apps for the past couple of years. Previously, there wasn’t an Android app; this is now available and is rated very favourably.
Their iPhone app is now rated 4.8 out of 5 from over 160,000 reviews, a big increase from the 1.6 score we saw previously.
The apps allow you to fully manage your account, make payments and watch your energy usage over time. You can also supply meter readings if you don’t have a smart meter.
Octopus Energy vs British Gas: Who has the better customer service?
We checked out both suppliers’ customer service statistics from Citizens Advice, as they offer the best customer service data comparison, which gives a fair and unbiased view:
This table gives a summary of how both suppliers compare:
| Octopus | British Gas | |
|---|---|---|
| Average call centre wait time | 01:41 | 02:29 |
| Emails responded to within 2 days | 83% | 97.4% |
| Fewer complaints received | 3/5 | 1/5 |
| Contact waiting time | 3/5 | 4/5 |
| Customer commitments | 5/5 | 5/5 |
| Opening hours | 9 am – 5 pm (4 pm on Fridays) | 9 am – 5 pm |
Both suppliers perform reasonably well in terms of customer service statistics. British Gas responds to a higher percentage of emails within 2 days. Both suppliers have a very similar average call centre waiting time.
Both offer comparable opening hours, but British Gas offers a webchat service, unlike Octopus.
British Gas or Octopus: Who has fewer complaints?
We looked at the complaint data each energy provider openly provides.
We’ve looked at the latest available data, which is Q2 2024 for Octopus and Q4 2024 for British Gas.
We have summarised the data in the table below:
| Octopus Energy | British Gas | |
|---|---|---|
| Complaints per 100k customers | 747 | 1,168 |
| Resolved the next working day | 51% | 60.2% |
| Resolved in 8 weeks | 79% | 88.8% |
British Gas vs Octopus Energy: What are the main differences between the two?
These two suppliers supply a substantial number of UK homes, but they are pretty different in their purposes.
Here, we will have a look at how they came out in the main categories customers look for when considering a new energy supplier:
| Area | Summary | Winner |
|---|---|---|
| Tariff Options | On the range of tariffs available, Octopus won the battle due to the range and flexibility in their tariffs. | Octopus |
| Price | When it comes to price, Octopus are cheaper across all tariff options. If you opt for their smart tariff, they are even cheaper. | Octopus |
| Green Energy | The award for the greenest energy supplier goes to Octopus, with being green at the heart of what they do. | Octopus |
| Customer Reviews | Octopus came out on top in the customer review category with more happy customers than British Gas. | Octopus |
| App | When we compare their website and apps, Octopus has it with their better functioning and well-reviewed apps. | Octopus |
| Customer Service | When it comes to customer service, British Gas wins this one due to faster email response times. | British Gas |
| Complaints | It was close again when it came to customer service. But overall, Octopus received a smaller amount of complaints. | Octopus |
Is Octopus Energy better than British Gas?
Octopus Energy leaves British Gas standing when it comes to being innovative and sustainable. They lead the way in every area for us, including customer service, tariff options and pricing.
Switching from British Gas to Octopus Energy
If you’re a British Gas customer looking to switch to Octopus, then it couldn’t be easier to do. All you need to do is click our link here to get a free quote from Octopus (plus you’ll get £50 if you sign up).
If you’re happy with your quote, fill out the rest of your details and Octopus will do the rest of the work. Within two weeks, you will have switched suppliers and have £50 credit in your account.
If you’d like to see how Octopus and British Gas to other tariffs available right now, we have a handy guide on the cheapest energy suppliers.
Frequently Asked Questions (FAQs)
1. Is Octopus Energy really cheaper than British Gas?
Yes, Octopus Energy has consistently offered lower prices on both fixed and variable tariffs compared to British Gas. In our latest comparison for a medium-usage household, Octopus came out cheaper across all tariff types, with the added bonus of no exit fees on most plans.
2. Does Octopus Energy offer 100% renewable electricity?
Yes. Octopus supplies 100% renewable electricity on all its tariffs as standard. Unlike many other suppliers, Octopus invests directly in solar, wind, and biogas generation, rather than relying solely on certificates.
3. Does British Gas have any green tariffs?
British Gas used to offer Green Future tariffs that matched electricity usage with renewable sources and carbon offsetting, but these are currently unavailable to new customers. Its standard tariffs still include energy from fossil fuels.
4. Can I get an EV tariff with British Gas?
No, British Gas does not currently offer any electric vehicle (EV) tariffs or time-of-use pricing. In contrast, Octopus provides several EV-focused tariffs such as Octopus Go and Intelligent Octopus, designed to help drivers save money when charging overnight.
5. Which company has the better customer service – Octopus or British Gas?
Octopus Energy is widely praised for its customer service, with high Trustpilot scores and lower complaint volumes. British Gas has faster average response times for emails and calls, but receives a higher number of complaints overall.
6. Do both companies support smart meters?
Yes, both British Gas and Octopus Energy support the use of smart meters. However, Octopus offers more advanced smart tariffs, including half-hourly pricing and dynamic pricing linked to wholesale costs.
7. Is it easy to switch from British Gas to Octopus?
Yes, switching to Octopus is quick and hassle-free. Octopus handles the process entirely and ensures there’s no disruption to your energy supply. If you use a referral link, you’ll also receive £50 credit on your first bill.
8. Are Octopus Energy tariffs fixed or variable?
Octopus offers a mix of fixed, variable, and smart tariffs. Most fixed tariffs last 12 months and come with no exit fees. Their variable and tracker tariffs offer more flexibility and can help customers take advantage of falling energy prices.
Other energy supplier comparisons
If you are looking for a British Gas or Octopus as a potential supplier to switch to, we have some other comparisons you may be interested in:
British Gas
Octopus
- Octopus vs E.ON Next
- Octopus vs Scottish Power
- Octopus vs EDF
- Octopus vs Utility Warehouse
- Octopus vs Outfox The Market
Our top rated supplier Octopus Energy is currently offering £50 credit to any new customer that uses our referral link. Click below to see how you can use a referral code
I do not entirely agree. I have a 2nd generation smart meter provided by Octopus and use it with their snug tariff to optimise off peak charging to work with my solar panels and battery. I got an email from them today telling me that the meter (as in the one they provided) does not work with the snug tariff and charging me for the difference between the snug tariff and another option.
I object strongly to being asked to pay for someone else’s mistake and am looking at other suppliers.
Hi Rob: please what is your referral code? I am registering directly with Octopus and I am being asked. Thank you.
I agree totally with this Octopus are the best company I have dealt with for ANY utilities.Their green ethics and ideals are what all modern companies should be striving for.Keep it up and once I start travelling again I will be going on the green tariff well done Octopus.