Posted by: @toodles

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@old_scientist The operative word there is ‘notice’, it would be nice if the app could send the operator a brief email notice of intent wouldn’t it? Having to keep toggling the settings is fraught with possible whoopses resulting in unintentional actions. With advance notice, one could plan how to deal with the recharge cycle timing. Regards, Toodles.

Yes, I agree. I give Tesla my thoughts on the topic every time I speak with them on the phone, so I think they are well aware that calibration is a subject many customers in the UK are unhappy about.

I see no technical reason why the software couldn't take into account ToU tariffs when scheduling a calibration if Savings mode is in use at the time, but clearly this is not something they have seen fit to do (yet!)

@old_scientist 

I don’t know, but postulate that perhaps there are good technical reasons why it’s not possible. Maybe the calibration event needs to be at a constant and continuous charge and discharge rate and that it can’t accommodate a TOU structure. For example during charging, you may not want to have a mixed charge/discharge cycle.

A very very long time ago I wore the hat of a metrology scientist, calibration methodologies are only valid if performed under specific and controlled conditions.

@papahuhu The strange thing is that for the first 4 years of the Powerwall’s lives, they have not needed this particular type of TLC to function well at all. Maybe as they approach middle age, they need some TLC to continue giving of their best? Regards, Toodles.

@toodles Maybe. As my more frequent visits to the GP indicate we get less robust with age. 
I have to say mine did it at least once a month when I was on IOF, but I can’t recall noticing it happening since I came off that tariff, although I don’t pay as much attention to the system as I used to unless it’s particularly sunny and I look to see what’s going on.

Have you started space heating yet? Everything work with the homely OK? I’m always worried they will go bust and stop supporting it, my whole system is designed around it so will be screwed if they do. I don’t even have a heat pump stat inside the heated envelope of the house, only the homely probe.

@papahuhu As you say, age takes its’ toll! I used IOF for about 9-10 days in August but otherwise have been an exporter and sans grid since late spring. I look at my Tesla kit app each day (several times 😉) but spotting that there is a calibrate cycle underway requires diligence I don’t have to spare!

My Daikin ASHP has come on about 3 or 4 times in the last couple of weeks but only for a few minutes and only during the night - consuming less than a kWh a night. The Homely kit is working quietly in the background and I set it to heat when required about a fortnight back on a cool evening. I hope to mention a nice little surprise with reference to partaking in a Homely survey soon😉. Regards, Toodles.

Posted by: @toodles

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@papahuhu The strange thing is that for the first 4 years of the Powerwall’s lives, they have not needed this particular type of TLC to function well at all. Maybe as they approach middle age, they need some TLC to continue giving of their best? Regards, Toodles.

I'm not sure about PW2, but regular calibration has been a thing for PW3, and a bugbear with users online in various PW3 groups.

I know PW2 and PW3 use completely different battery chemistry so maybe a function of that. Or maybe it was a new thing with the introduction of PW3, and they've only just got around to backporting that 'feature' to PW2?

My PW3 underwent calibration every 91 days for the first 9 months of ownership, then skipped the 4th calibration completely once I had sufficient data to attempt to predict when it may occur. Typical 😀

@old_scientist You mean you didn’t know about that secret camera and monitoring software incorporated in the Tesla app that monitors your keystrokes, mouse movements, eye movements, audible comments and adjustments you make?😳 Regards, Toodles.

@toodles Will the homely system now actually deliver cooler nighttime temps? If so, it will remove my #1 bugbear with it. Last year, in desperation,  I ended up turning 3 entire radiators off for the winter, which is the opposite of what I should be doing.

@papahuhu I don’t know if the heating schedule has had any improvements added; as you have observed in the past, the maximum temp you set in the schedule seems to be interpreted by Homely as the desired temp 24/7! Ok by us as we need constant warmth for medical reasons but I can’t help feeling this is a very weak point in their design for most users. Regards, Toodles.

@toodles when you mentioned there had been an improvement I was hoping it was that. If not, it must mean they are finally giving us access to our data then, that will be useful too.

@papahuhu The surprise I mentioned is nothing to do with the Homely App as such. Sorry if that was building up your hopes. I know they have added one or two pieces of extra data relating to usage and a function in the subscription version of Smart+. Regards, Toodles.

That’s disappointing, the equivalent of finding out that a beautiful lady paying you attention is a tranny. 
I was speaking to the British Gas engineer whom serviced my heat pump and apparently they regularly install homely in their systems now. So that’s somewhat reassuring, the more systems get installed the less likely they are to stop supporting them. I wouldn’t even mind a small annual fee, but they would need to give me some additional useful functionality beyond the current smart+ offering, which is of zero use to me.