£49.00 inc.Vat

Energy harvesting wireless sensor

We are currently quoting a 3-4 week lead time from ordering due to an overwhelming response to our products and influx in sales.
We're working hard to get these lead times down and will keep you updated on the status of your order.

Thank you for your patience and support.

SKU: HARVI-65A3P Category:


harvi is a clever little device that enables the zappi and eddi products to be installed without using a wired current transformer (CT) for measuring the grid and or generation power; instead the CT is connected to harvi. No power source is needed for harvi – the energy from the CT is harvested and used to transmit the measurement signal to the zappi or eddi. This means batteries or electrical wiring are eliminated!


  • Wireless power sensor
  • Energy harvesting – no batteries or electrical wiring required
  • Uses standard CT supplied with eddi & zappi products
  • 3 CT inputs for 3-phase supplies
  • Grid/Generation/Storage measurement configurable
  • Fast & accurate measurement
  • Wall mountable


Additional information

Weight0.5 kg


Click here to view the Harvi product manual


  1. Ewan McLaren

    What an amazing product!

  2. ed

    will you be releasing a monitoring screen (like owl) or app?

    • Jordan Brompton

      Hey Ed,

      Yes that is the plan 🙂

      We’ll keep you posted on it.

      Best wishes,
      Jordee and Team.

    • Jordan Brompton

      Hey Ed, Yes we will be releasing an app, pushing for September release. Best wishes, Jordan.

  3. Frank Baldry

    Not a review – yet. I’ll order when I have my PV system install date.
    Qu: Does the Harvi transmit to Zappi over existing Wifi or its own dedicated Wifi?

    • Jordan Brompton

      Hey Frank, all myenergi products communicate using proprietary protocol, 868MHz. Best wishes, Jordan.

  4. B D Smith

    Excellent piece of kit. The Harvi, located in the meter cupboard outside, reliably sends data to the Eddi that is hidden in the airing cupboard on the 1st floor. Unlike other sensors I’ve used, there’s no need to mess around replacing batteries.

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