Many Sense users muse over what the Always On value really means and how it is calculated. I have seen suggestions on this forum that it is some kind of rolling average or rolling minimum over the past 48 hours. The near-exact definition can be found here: Always On is a calculation of the lowest…

Here’s an update that gives a little more insight into Always On behavior. The top is a weeks worth of Always On (blue) in the context of Total Usage (red). The bottom is a zoomed in view of the same. [AO1] [AO2] Any time Total Usage drops below Always On, Always On gets dragged lower, while…

One more update, with a little more insight. In addition to the 1% bin function (in blue), I have added the similar 48 hour results for the the min function (in green) and the mean/average (in purple). As you can see in the full-sized plot below, the average for 24 hours is far larger than the Alw…

Kevin, your explanation of Always On is clear and the data you get from Home Assistant has confirmed your understanding. I hate to be contrarian, but applying this definition isn’t working for me. At least, not lately. About a month ago I started noticing that the Always On values no longer match…

In my mind, you are thinking about this the right way, but there is probably more beneath the surface of that Sense Power Meter that might be affecting Always On. You convinced me to plot my Home Assistant-based calculation (HA_AO) side-by-side with the actual exported Sense Always On. I had been h…

@jefflayman , one more factor in the Sense definition could also make a big downside difference in the Sense Always On calculation - “ Always On is a calculation of the lowest power of each of your mains,…” So Sense looks at the 1% bin of each of your mains separately, something we can’t really see t…

Kevin, I think you have the explanation with that concept, especially if the 1% bin need not happen in each leg at the same time. Thank you for your input! This tempts me to post a feature request. I wonder if the Always On tile could be updated to display the separate components in each leg. Th…

Here’s the main Wishlist item for tracking power usage by leg / phase: [image] Track Use by Phase Product Wishlist I would like to be able to track watts used by each phase. It would narrow down searches of new devices. It would be nice to see the “Now” view by each pha…

Thank you, Kevin! I hadn’t found that one, so this really helps. You know all the answers!

@jefflayman For the SENSE team to see your vote, go to the original (first) post in the ‘Product Wish List’ thread - Product Wishlist Have an idea for a new Sense feature? Share it here! Each post should contain only one featu…

The Elusive 'Always On' Calculation

Data Analysis

kevin1 May 25, 2021, 11:57pm 9

Here’s the main Wishlist item for tracking power usage by leg / phase:

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The Elusive 'Always On' Calculation

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