# How to measure "overall" energy usage in older houses?

**URL:** <https://community.homey.app/t/how-to-measure-overall-energy-usage-in-older-houses/131458>\
**Category:** Energy\
**Tags:** homey-pro\
**Created:** [February 24, 2025, 5:58am UTC](https://community.homey.app/t/how-to-measure-overall-energy-usage-in-older-houses/131458 "2025-02-24T05:58:38Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Kenneth\_WedMore\_Lund](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/kenneth_wedmore_lund/32/128966_2.png) [@Kenneth\_WedMore\_Lund](https://community.homey.app/u/Kenneth_WedMore_Lund)\
**Post date:** [February 24, 2025, 5:58am UTC](https://community.homey.app/t/how-to-measure-overall-energy-usage-in-older-houses/131458/1 "2025-02-24T05:58:38Z")

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Hi - fairly new Homey Pro user here.

I would REALLY like to measure / track the energy usage in my house but my meter does not have ports like P1 etc. The meter is Echelon 83331-3iaad

Is it still possible for me to start tracking the overall usage and if so, what sensors do I need?

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**Author:** ![Adrian\_Rockall](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/adrian_rockall/32/13209_2.png) [@Adrian\_Rockall](https://community.homey.app/u/Adrian_Rockall)\
**Post date:** [February 24, 2025, 7:49am UTC](https://community.homey.app/t/how-to-measure-overall-energy-usage-in-older-houses/131458/2 "2025-02-24T07:49:05Z")

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You could possibly use something with a clamp like this [Zigbee Smart Energy Meter,Tuya Zigbee for Smart Life Energy Meter 80A With 2 Clamp Ct Smart Home Energy Monitor,Remote Control(B) : Amazon.co.uk: Home & Kitchen](https://www.amazon.co.uk/Zigbee-Energy-Monitor-Remote-Control/dp/B0CH8D7WDD/ref=asc_df_B0CH8D7WDD?mcid=e9c65ebd7b243db9824c71db04fbf588&hvocijid=18141790420358506078-B0CH8D7WDD-&hvexpln=74&tag=googshopuk-21&linkCode=df0&hvadid=696285193871&hvpos=&hvnetw=g&hvrand=18141790420358506078&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9190389&hvtargid=pla-2281435176898&psc=1&gad_source=1)

I’m not sure if that specific one is supported in Homey, but I have one from LightWave that I used to use before I got my solar inverter.

This one appears to be supported by Homey:

> **[Aeotec Home Energy Meter Gen5, Z-Wave Plus Smart Electricity Usage Monitor,...](https://www.amazon.co.uk/Aeotec-Energy-Electricity-Monitor-Consumption/dp/B017DV3URS)**
>
> Shop Aeotec Home Energy Meter Gen5, Z-Wave Plus Smart Electricity Usage Monitor, Report Real Time Power Consumption, 1 Clamp, Detect up to 60 amps for Single Phase System. Free delivery on eligible orders of £20 or more.

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**Author:** ![Doekse](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/doekse/32/109415_2.png) [@Doekse](https://community.homey.app/u/Doekse)\
**Post date:** [February 24, 2025, 2:15pm UTC](https://community.homey.app/t/how-to-measure-overall-energy-usage-in-older-houses/131458/3 "2025-02-24T14:15:47Z")

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You could also use an optical smart meter like the [Frient EMI](https://frient.com/products/electricity-meter-interface-2-led/). Just attach its sensor to the LED indicators on your meter, and it will track the light pulses to calculate your power usage accurately.

They are showing the exact meter you have at home, the Echelon 83331-3iaad, in their product pictures. It is a Danish company 😉

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**Author:** ![Kenneth\_WedMore\_Lund](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/kenneth_wedmore_lund/32/128966_2.png) [@Kenneth\_WedMore\_Lund](https://community.homey.app/u/Kenneth_WedMore_Lund)\
**Post date:** [February 24, 2025, 2:34pm UTC](https://community.homey.app/t/how-to-measure-overall-energy-usage-in-older-houses/131458/4 "2025-02-24T14:34:26Z")

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Brilliant, I will try that ! 🙏