Aussie Bundle (230V)

(1 customer review)

From: $185.50 $169.25

Single-phase or three-phase.  Pictures representative of possible configurations. Customize your bundle by selecting individual components. See description below for additional information.



IoTaWatt is very popular down-under because of it’s robust three-phase capabilities and ability to upload to PVoutput.  But there are challenges to making it economically viable.  The voltage transformers are heavy and expensive with the unique plug type.  Shipping from China to the USA and back down to Australia is not only expensive, it leaves a huge carbon footprint.

Fortunately, there are a couple of local sources for these and a few early users sent samples that were calibrated and added to the tables.  You can pick these items up locally and use them with the same confidence as the Euro plug VT sold here.  While you’re at it, you should order a native plug micro-usb power supply.

The 9VAC transformer models are:

Micro USB from above suppliers per their catalogs:

Basic bundle requires minimum:

  • IoTaWatt Base
  • 1 – Mains CT
  • 3 – 50A CT’s


  • additional ECS16-100 100A CT
  • additional ECS10-50 50A CT
  • additional ECOL09 50A Solid-core CT


  • The basic bundle weighs less than 2 lbs and ships for flat-rate $15.  If optional components increase the weight beyond 2 lbs, shipping increases to $25 flat-rate up to 4 lbs.

1 review for Aussie Bundle (230V)

  1. Tai (verified owner)

    IoTaWatt is exactly what you need to monitor all your solar production, self consumption, and total site consumption. I’ve also used commercial systems like Solar Analytics which have a *little* more polish, and claim to offer “analytics”, but are a bit light on detail and non-responsive to support and feature requests.

    The IoTaWatt can monitor 14 (!) circuits in one affordable device with easy to install CT clamps, with no ongoing subscription fees, integration with the excellent PVoutput and EmonCMS (open energy monitor), as well as locally storing 10 years worth of high resolution data.

    It appears to be more accurate than the more than twice as expensive Solar Analytics in my testing so far, and has allowed me to monitor grid import/export, TWO solar inverters and ALL 9 of my sub-circuits, where I had to combine several circuits with Solar Analytics and still couldn’t monitor them all.

    IoTaWatt also has a *really* real-time (1 second refresh) live view of your entire system, while Solar Analytics only offers 5s updates after you enable their “live monitor” which automatically shuts off after 15 minutes, and normally only show and only keep data at 1 minute intervals.

    With IoTaWatt you can also create virtual “outputs” with a calculator like interface, for example to combine multiple circuits and report their sum as one value, or calculate “total consumption” as `grid import + solar generation – grid export`, or report unmeasured/misc consumption as `total_consumption – sub_circuit_1 – sub_circuit_2` etc.

    The built in graphs are pretty good, and very high resolution. I’ve been able to recreate the helpful “energy balance” graph from my Fronius inverter, but now it applies to my whole site (including an old non-“smart” inverter). But you can also export to PVoutput (which is great), and EmonCMS (which I haven’t used yet but looks good) and InfluxDB (which I also haven’t used yet, but looks nice and specifically geared towards time series data).

    The support provided by the developer (and just take a look at the forum for yourself) has been top notch, and way beyond the commercial support I received at Solar Analytics.

    I’m glad this is an open source / hardware project, and that I am in control of my data (stored locally and exported to cloud platforms under accounts that I control) and not at the mercy of a company who might one day go bust and with them all my data may be gone.

    If you want to know what’s causing a high electricity bill, and how much solar you’re generating, using and exporting, then IoTaWatt combined with PVoutput (which you can configure with tariffs and supply charges, and can record local temperature and can compare system performance against estimates to calculate your ROI on solar), just get this. You won’t regret it.

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