What is the Cosy Octopus tariff?
Cosy Octopus is a smart electricity tariff designed for homes that heat with electricity, particularly heat pumps, electric boilers and electric radiators.
Instead of a single cheap overnight rate, Octopus Cosy is a three-rate heat pump tariff. It gives you 8 hours of cheaper “Cosy Hours” every day (4–7 am, 1–4 pm and 10 pm–midnight) and a higher rate from 4–7 pm
The savings come from shifting as much heating and hot water as possible into those lower-priced slots, while minimising use in the expensive peak window.
Cosy works best with smart controls and systems that can store heat in the building fabric or hot water cylinder, rather than needing constant on-demand heating.
Octopus Cosy tariff explained in detail
If you want to go deeper on Octopus Cosy, take a look at my detailed guide to the Octopus Cosy heat pump tariff.
On that page I explain how the three daily low-price windows work, how Cosy pricing compares with other Octopus smart tariffs, and which types of electric heating systems benefit most.
You’ll also find real pricing examples, notes on scheduling heat pumps and hot water, and practical tips for keeping costs down without sacrificing comfort.
Alternatively look at our Best Heat Pump Tariff article where we look at the best Octopus tariff based on the renewable technology you have.
Referral information and free credit offer
If you find Energy Stats UK useful, there are a couple of easy ways to support the site and help cover hosting and server costs.
Thinking about switching energy suppliers?
Homeowners who join Octopus Energy using my referral link get £50 free credit after signing up. Business users get £100 free credit, and if you’re looking at solar or a heat pump, there’s also a £100 gift card through Octopus Tech.
Finally, a £25 gift card can be claimed when having an EV charger installed through Octopus.
Or, if you just want to say thanks, you can buy me a coffee.
You can also see more ways to support the site here via the likes of Plusnet broadband, Smarty Mobile, Havenwise remote heat pump control, Hetzner Cloud hosting and more.
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Note: The current and past performance of energy pricing is not necessarily a guide to the future.
