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myenergi harvi vs HomeWizard P1 Meter

Energy Gateway

myenergi harvi

Energy Gateway

HomeWizard P1 Meter

Decision point	myenergi harvi	HomeWizard P1 Meter

Install fit
Phase support	Unknown	Reads 1-phase or 3-phase data from a compatible smart meter P1 port
Installation	Wall-mounted wireless CT sensor installed near CT clamps and within range of the myenergi master device.	Plug-in indoor P1-port smart-meter reader; powered by SMR5 P1 port or USB-C on older meters.
Measurement	Wireless CT signal collector for grid, generation, or load monitoring in a myenergi system.	Gateway/data logger reading smart-meter P1 telemetry for electricity import/export, gas, and solar surplus; not a direct current-carrying meter.
Max current	Unknown	0 A
Meter fit
Current sensing	Unknown	Reads data from the utility smart meter P1 port
Gateway fit
Connectivity	Wireless link to a compatible myenergi master device; harvi itself has no standalone IP gateway interface.	Wi-Fi 2.4 GHz 802.11b/g/n; local HTTP/JSON API when enabled in the HomeWizard app.
Downstream protocols	Current-transformer inputs; harvi sends CT measurement signals wirelessly to compatible myenergi devices.	P1 smart-meter port / DSMR-style smart-meter telemetry from the connected utility meter.
Connected devices	3	1
Role	Energy-harvesting wireless CT sensor for myenergi zappi, eddi, and libbi systems.	P1 smart-meter reader and Wi-Fi data logger for electricity import/export, gas, and solar-surplus visibility.
Monitoring
Protocol	868 / 915 MHz proprietary wireless telemetry	Wi-Fi / Local API
Local API	No	Yes
Cloud dependency	No standalone harvi cloud; app/cloud visibility depends on the paired internet-connected myenergi master device.	HomeWizard app/account and Energy+ cloud features support setup, app history, and extended history; the Local API can provide LAN measurements when enabled.
Home Assistant	Unknown	Yes
Solar fit
Solar import/export	Yes	Yes
Buying context
Price range	Unknown	About EUR 25-EUR 40
Availability	UK / Ireland / Europe through myenergi official channels; local distributor availability varies by market.	Europe through HomeWizard official store and localized markets; requires a compatible P1/HAN smart meter. HomeWizard lists 1-phase and 3-phase smart-meter data support.
Source check
Last verified	Jul 23, 2026	Jun 14, 2026
Product page	Official page	Official page
Documentation	Official docs	Official docs