Compare every Octopus Energy tariff alongside all other UK suppliers — free in seconds.
Octopus Energy Deals UK
Compare every Octopus Energy tariff alongside all other UK suppliers — free in seconds.
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What Is Octopus Energy?
Founded in 2016, Octopus grew from a start-up challenger to the UK's biggest domestic energy supplier. Which? Recommended Provider for multiple consecutive years.
7 million+ UK homes served
The UK's largest domestic energy supplier by customer numbers as of 2026.
100% renewable electricity matching
All standard tariffs backed by Renewable Energy Guarantees of Origin (REGO) certificates.
Proprietary Kraken platform
In-house technology for billing and smart meter data — widely considered best-in-class.
Widest range of specialist tariffs
Agile, Intelligent, Go, Flux, and Cosy — more distinct tariff types than almost any other UK supplier.
Bulb Energy acquisition
Acquired Bulb Energy's customer base in 2022, significantly expanding its scale and reach.
Octopus Energy Tariffs Available in 2026
More distinct tariff types than almost any other UK supplier. The right one depends on your usage pattern, EV, solar, or battery setup.
Octopus Flexible
Variable tariff tracking the Ofgem cap. No exit fees. Best for most households wanting flexibility.
Octopus 12/24-Month Fix
Lock in your rate. Exit fees £50–£100 per fuel. Best when the cap is forecast to rise.
Octopus Agile
Rates change every 30 mins based on wholesale prices. Very low off-peak rates possible. Requires SMETS2.
Octopus Go / Intelligent Go
Cheap overnight rate (~7p/kWh) for EV charging. Intelligent Go smart-schedules when grid carbon is lowest.
Octopus Flux
For solar + battery households. Buys and sells electricity at different rates across the day. Unique in the market.
Cosy Octopus
For heat pump households. Free electricity windows during off-peak periods designed around heat pump operation.
Octopus Energy Unit Rates — Q2 2026
~24.50p
Electricity unit rate
Per kWh — below Ofgem cap of 24.67p
~5.74p
Gas unit rate
Per kWh — at Ofgem cap level
~82.46p
Daily standing charge
Dual fuel combined — ~£314/year
7-9p
Octopus Go night rate
Overnight EV charging — save ~£500/year
Is Octopus Energy Actually Cheap in 2026?
The honest answer: it depends on your situation.
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How to Switch to Octopus Energy — 5 Steps
Under 5 minutes. Supply never interrupted. No need to contact your current supplier.
Gather Your Details
Postcode, current supplier name, and annual kWh usage. No bill? Switch estimates from your home size.
Compare on Switch
All Octopus tariffs alongside every competitor — ranked by total annual cost. Filter by fixed, variable, EV, or green.
Select and Confirm
Choose your deal and set up direct debit. Switch handles the transfer notification. Under 2 minutes.
14-Day Cooling-Off
Cancel within 14 days at zero cost. Your current supplier continues until the switch completes.
Switch in 5 Working Days
Energy Switch Guarantee. £40 compensation if delayed. Take a meter reading on switchover day.
Is Octopus Energy actually cheaper — or just better marketed?
Octopus Energy vs Other UK Suppliers
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Is Octopus Energy Green?
Octopus Energy and Smart Meters
Octopus is one of the UK's most active smart meter installers. SMETS2 required for Agile, Go, Intelligent Go, and Flux tariffs.
SMETS2 (post-2018)
Full compatibility — all smart tariffs available. Half-hourly reads submitted automatically.
SMETS1 (pre-2018)
May lose smart function initially. Octopus upgrades SMETS1 to SMETS2 free of charge.
No smart meter
Traditional meter accepted for standard tariffs. Request free SMETS2 installation on sign-up for smart tariffs.
Economy 7 smart meter
Check Agile or Go tariff compatibility. Confirm night-rate billing before switching.
Can You Switch to Octopus on a Prepayment Meter?
Yes — Octopus accepts prepayment meter customers. Four things to know before you switch.
£500 debt limit applies
If you owe more than £500 to your current supplier per fuel, you cannot switch until the debt falls below this threshold. Ofgem rules apply across all suppliers.
New key or card within 5 days
Octopus sends your replacement prepayment key or card within 5 working days of your switch completing. Your supply continues uninterrupted throughout.
Free upgrade to credit meter
Customers with no debt history can request a free conversion from prepayment to a standard credit meter — usually completed within a few weeks.
Smart prepayment meter available
Request a free SMETS2 smart prepayment meter on sign-up. Manage top-ups via the Octopus app and see live usage without a key or card.
How Much Could You Save by Switching to Octopus Energy?
£70–140
1-bed flat / single occupant
1,800 kWh elec + 7,500 kWh gas
£120–260
2–3 bed house / couple
2,700 kWh elec + 11,500 kWh gas
£200–380
3–4 bed family home
4,100 kWh elec + 17,000 kWh gas
~£500
EV driver (Octopus Go)
Saving on EV charging alone vs standard rate
Frequently Asked Questions — Octopus Energy Deals UK
What tariffs does Octopus Energy currently offer?
Octopus offers Flexible (variable), fixed 12/24 months, Agile (half-hourly pricing), Go/Intelligent Go (cheap overnight EV), Flux (solar+battery), and Cosy (heat pumps). Availability depends on postcode and meter type.
Is Octopus Energy cheaper than British Gas in 2026?
How long does switching to Octopus Energy take?
Is there an exit fee if I leave Octopus Energy?
Does Octopus Energy supply 100% renewable electricity?
What is the Octopus Agile tariff?
What is the Octopus Go tariff?
Can I switch to Octopus if I rent?
Can I switch to Octopus if I am in debt to my current supplier?
Does switching to Octopus affect my smart meter?
What is Octopus Energy's Trustpilot rating?
How do I compare Octopus Energy deals?
Compare Octopus Energy Deals Now — Free in Under 2 Minutes
The July 2026 Ofgem price cap is forecast to rise by up to 13.5%. Households that fix before July lock in the current lower rate for 12–24 months. Switch compares every Octopus tariff and competing supplier for free.
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