HarmLessSolutions:

 

mark0x01:

 

Solar will be installed later this month, and I have missed a good start with the last few weeks of nice clear sunny days.

 

I've used some hourly use history from my Home Asssistant to see if a TOU plan would offer any benefit.

 

This might change once solar is taken into account, but not there yet and being a Low User doesn't seem to help.

 

So the results:

 

Not off to a good start when looking at July to September 2025 - there was no difference in cost between the Ecotricity Anytime and TOU plans.

 

Between 35-40% use is during peak times of 7AM-11AM and 5PM-9PM and that could be hard to shift.

 

A more stepped TOU plan might work better, but I don't think trying to train the wife to follow it is going to work out too well 😄

 

 

Maybe consider restricting HWC powering during peak export tariff hours. We're often generating significantly well before 11am and I manually disable our diverter until after 11am but a timer could be set to do the same. An extra 5.75c/kWh on our Ecotricity EcoSolar plan but it all ads up.

 

No HWC involved, as currently gas califont.

When that dies, will probably go HWHP.