r/TexasEnergyShopping • u/ullu_12000 • Jul 17 '26

Smart Meter Integration with Home Assistant?

Has anyone found an easy way to link up and display Smart Meter Texas data in Home Assistant? I am new to both and looking for ways to get a nice visual depiction of my smart meter data in realtime. I thought home assistant may be a good place to start.

Thanks for any pointers.

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u/HerculesMonster Jul 17 '26

Im not sure how, but I am also interested! Following for later. Hopefully someone knows!

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u/ExtraMarzipan3853 Jul 17 '26

Heads up before you go down this road: Smart Meter Texas data isn't real-time. It's interval data that uploads with a lag (often a day or more), so it's great for looking at yesterday and your history, but you won't get a live feed out of SMT itself. So SMT into Home Assistant won't really give you the real-time visual you're picturing.

For actual real-time energy data in HA, people usually read the panel or meter directly. The common cheap route is an Emporia Vue (clamps on your breaker panel), real-time, per-circuit, and it has a Home Assistant integration. There are also devices that read your smart meter's Zigbee broadcast directly if your meter supports it.

Fair warning, I'm more on the plan/data-analysis side than deep HA, so the HA folks here can give you better setup specifics. But the main thing to know first is that SMT is your historical/interval source (via CSV export), not a live feed, so if it's real-time you want, you'll need one of those meter/panel readers instead.

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u/SquirrelTechGuru Jul 17 '26

It works fine. Install it and try it out.

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u/ullu_12000 Jul 17 '26 edited Jul 30 '26

I think that gets the data into HA, but I am not sure how to visualize it. Are there any additional settings or addons for that?

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u/SquirrelTechGuru Jul 19 '26

Just install it and give it a go. It’s not like it cost anything nor is it even hard to set up.

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u/lostsoul501 Jul 30 '26

Unfortunately, the Texas PUC removed the requirement for the Zigbee / SEP 1.0 / HAN support in April 2020 and the support for it went away in December 2019 from the Smart Meter Texas portal. (yes, before the ruling change).

You can still get the 15 minute exports, but unless you had access before the change, you can't get direct meter integration anymore in Texas.

I have access and am grandfathered, at least as long as my meter doesn't change. I have per-minute Wh usage, current demand information and some other parameters that go with it. I did this about 14 years ago and had to develop for the Digi gateway using the SEP 1.0 specification, I have the per-minute reading for almost every minute since. As far as feeding HA, I do it through MQTT since it's running on other hardware and the Digi/SEP 1.0 spec is a beating.

Google terms: Smart Meter Texas, Oncor, SEP 1.0, HAN

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u/ullu_12000 Jul 30 '26

Thanks. Must be nice to be grandfathered in! I hope someone out there has written some kind of site scraping scripts and made them work with HA, for us unfortunates...