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Cosy Octopus 12M Fixed September 2026 v1

Time of Use Fixed All 14 UK regions

Cosy Octopus 12M Fixed September 2026 v1 is a time of use electricity tariff from Octopus. Rates and standing charges shown below are refreshed daily; last updated .

Rates in your area

DNO: SP Energy Networks
Standing charge
61.44p /day
Unit rate
Off-peak 15.13p / Peak 46.29p
Time-of-use bands
Band Time Rate
Standard 00:00 - 04:00 30.86p
Off-Peak 04:00 - 07:00 15.13p
Standard 07:00 - 13:00 30.86p
Off-Peak 13:00 - 16:00 15.13p
Peak 16:00 - 19:00 46.29p
Standard 19:00 - 22:00 30.86p
Off-Peak 22:00 - 00:00 15.13p

How does Cosy Octopus 12M Fixed September 2026 v1 compare against your real usage?

Upload your half-hourly smart meter data (free) and we'll project your annual cost on Cosy Octopus 12M Fixed September 2026 v1 alongside every other active UK tariff.

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Rates across all 14 UK regions

Region DNO Standing charge Unit rate
Eastern England UK Power Networks 51.67p 15.48p - 47.34p
East Midlands National Grid Electricity Distribution 50.75p 14.80p - 45.26p
London UK Power Networks 42.29p 16.56p - 50.67p
North Wales, Merseyside and Cheshire SP Energy Networks 66.74p 16.27p - 49.76p
West Midlands National Grid Electricity Distribution 56.61p 14.96p - 45.76p
North East England Northern Powergrid 60.70p 14.79p - 45.24p
North West England Electricity North West 44.85p 15.15p - 46.35p
Northern Scotland Scottish and Southern Electricity Networks 55.28p 16.23p - 49.64p
Southern Scotland SP Energy Networks 61.44p 15.13p - 46.29p
South East England UK Power Networks 52.21p 14.67p - 44.86p
Southern England Scottish and Southern Electricity Networks 47.47p 15.18p - 46.42p
South Wales National Grid Electricity Distribution 54.36p 15.02p - 45.95p
South West England National Grid Electricity Distribution 55.52p 14.91p - 45.62p
Yorkshire Northern Powergrid 60.86p 15.40p - 47.09p

Rates include VAT where applicable. Half-hourly bands for time-of-use tariffs are shown in the panel above when you select a region.

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Compare Cosy Octopus 12M Fixed September 2026 v1 head-to-head

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Frequently asked questions about Cosy Octopus 12M Fixed September 2026 v1

This tariff is currently published in all 14 UK DNO regions. Use the region selector at the top of this page to see the rates and standing charge for your specific DNO region. Availability is subject to Octopus's own eligibility criteria, which can include smart meter compatibility and account standing.

Cosy Octopus 12M Fixed September 2026 v1 is a time of use tariff with a fixed unit rate for the duration of the contract. Time-of-use tariffs have multiple price bands across the day. Off-peak hours are typically cheapest. Households that can move consumption into the cheaper bands save the most.

New customers signing up via the referral link on this page may receive a £50 credit. Bonus eligibility is determined by Octopus at switch confirmation. We earn a small commission when a switch completes, which helps fund this site - it does not affect the price you pay.

Standing charges and unit rates are refreshed daily from the official Octopus tariff data. The page itself caches for one hour in your browser for faster repeat visits.

This tariff is no longer accepting new customers (it closed to new sign-ups on 26 September 2026). Existing customers remain on it for the duration of their contract. Use the comparison tool to find current alternatives that match your usage pattern.

See your projected cost on Cosy Octopus 12M Fixed September 2026 v1

Upload your half-hourly smart meter data (free) and we'll project your annual cost on Cosy Octopus 12M Fixed September 2026 v1 versus your current tariff, plus every other active UK tariff for comparison.

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Data refreshed .