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Octopus Energy new Cosy tariff.

Toodles · 2024-06-26T13:26:27Z

I see that OE are introducing a much improved Cosy tariff (in my opinion anyway!) on first July, there are going to be three ‘dips’ per day now which offers a more even distribution of charge discharge times for some of us. I looked at thei site but they don’t appear to have quite completed the details as the wording mentions a ‘triple dip’ but the tariff details show just two. I note the rate has dropped now, this might be worth further examination I feel - I’m currently on Agile. Regards, Toodles.

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Toodles

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Topic starter 04/07/2024 8:45 am

@irmartini I would think all that pipework would emit more heat than a small radiator might! Toodles.

Toodles, heats his home with cold draughts and cooks food with magnets.

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IRMartini

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04/07/2024 8:48 am

@toodles

Whats that got to do with it potentially being boxed in?

“Anything worth doing, is worth doing right.”

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Toodles

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Topic starter 04/07/2024 9:05 am

@irmartini I take it you meant the radiator would be boxed in. I probably have that wrong. I would have thought insulating the pipework, rather than boxing in the equipment which would make it awkward for access, would be the best plan. Regards, Toodles.

Toodles, heats his home with cold draughts and cooks food with magnets.

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Anonymous 5011

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04/07/2024 9:19 am

Posted by: @irmartini

↑

Whats that got to do with it potentially being boxed in?

Not sure I would want to box in with what looks like the controller on the cylinder. Uninsulated pipework, cylinder at around 50 degs, means it's going to be hot in the box, not good for the long term health of electronics.

Insulated piping would get my vote and switching off the radiator.

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IRMartini

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04/07/2024 9:41 am

I was just suggesting it looked like that corner had been boxed in before looking at the floor and wall and so its not unreasable to think that might be the plan goign forward and so all the heat from uninsulated pipe work might not be going into that room and so the radiator may be required, we also can't see how big that room actually is. weather its a good idea or not was not part of my point.

“Anything worth doing, is worth doing right.”

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Old_Scientist

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04/07/2024 11:46 am

@johnmo It's a utility hallway - that photo was taken during the installation, pipework is now lagged, and I will be building a closet to house the tank/pipework. Our flow temps will always be below 40C, so should never reach "roasting", just comfortably warm (hopefully). All radiators were designed and sized to match the heat losses of each room at 40C (-2C ambient), although I think they over-estimated the heat loss, so I suspect we will be range bound between 33-38C for LWT.

Back on topic - it's a negatively priced day on Agile today, so the heating is getting a good workout and a 70C legionella cycle is about to begin. Still considering a switch to Cosy for the Winter, but for now, during summer, we are not really able to leverage the cheap periods so think Agile may prove cheaper in the standard priced periods.

Samsung 12kW gen6 ASHP with 50L volumiser and all new large radiators. 7.2kWp solar (south facing), Tesla PW3 (13.5kW)
Solar generation completely offsets ASHP usage annually. We no longer burn ~1600L of kerosene annually.

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Toodles

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Topic starter 09/07/2024 5:49 pm

@old_scientist Of course, what I’m really doing is justifying to myself that I have made the right decision in changing from Agile to Cosy…. Looking at the Agile rates over the last three days at least, there have been few if any HH’s where the Agile rate was as low or lower than the Cosy cheapest rate (wot I use to charge the battery of course!). I promise, I’m not trying to be smug as I know in a day or three, there will be multiple plunges on Agile!!! 😉 Regards, Toodles.

Toodles, heats his home with cold draughts and cooks food with magnets.

👍

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Old_Scientist

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10/07/2024 12:11 am

@toodles In your situation, with batteries, I agree that you have made the right decision - being able to lock in half price electricity at 11p in the cheap rate dip periods to charge your batteries for use during the peak and standard rate periods, with certainty over the pricing each day is a definite win. Enjoy 😀

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Toodles

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Topic starter 10/07/2024 8:47 am

@old_scientist I will, but it doesn’t stop me looking over my shoulder from time ti time.😉 (Grass is always greener…) Regards, Toodles

Toodles, heats his home with cold draughts and cooks food with magnets.

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Toodles

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Topic starter 13/07/2024 10:24 am

Still looking over my shoulder… the Agile v Cosy tariffs (as the person falling from a very high building said ‘So far, so good’) are in my favour as per Octopus Compare chart. Regards, Toodles.

Toodles, heats his home with cold draughts and cooks food with magnets.

👍

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Old_Scientist

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13/07/2024 12:42 pm

@toodles Great that Cosy is working out for you.

I've not tried the Octopus Compare app, but without the benefit of batteries I find it non-trivial to accurately compare two tariffs like Agile and Cosy as my time of day usage would be different on each, to take advantage of the respective cheaper slots. I currently download my daily HH usage data on Agile, and plug that into a spreadsheet using the Cosy Time of Use rates to compare, but of course some of that usage I would have shifted from the daily rate to the cheap rate periods on Cosy, having previously been happy to use at those times based on the Agile HH pricing. So it's complex and difficult to make accurate comparisons IMHO. However, so far they are working out remarkably similar for our current summertime usage and both are significantly cheaper than the SVR.

Those issues aside, I'm definitely considering for Autumn where we will be able to fully leverage those cheap rate periods for occasional heating needs, where it does not need to be on constantly 24/7.

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Toodles

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Topic starter 13/07/2024 1:42 pm

@old_scientist I have never gone to the faff of checking whether the Octopus Compare is comparing total usage at the optimum HH’s or if the comparison is made on a timings and consumption actually used against the same consumption and times using the other tariff. As I have storage, I am able to keep grid consumption to the cheapest HH’s on whichever tariff I have used. Looking at the Agile rates, they have rarely been as low as the cheapest Cosy HH’s since 1st. July when I swapped over to Cosy. OE are very good by allowing swapping tariffs without any penalties being imposed at all!. Regards, Toodles.

Toodles, heats his home with cold draughts and cooks food with magnets.

👍

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