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myenergi harvi vs HomeWizard P1 Meter

Install fit
Phase support Unknown Reads 1-phase or 3-phase data from a compatible smart meter P1 port
Installation Indoor wall mounting near up to three CT clamps and within RF range of the paired master; use a suitable IP-rated plastic enclosure outdoors. Plug-in indoor P1-port smart-meter reader; powered by SMR5 P1 port or USB-C on older meters.
Measurement Wireless relay of CT-derived grid import/export, solar generation, battery, or load measurements; harvi is not a standalone IP meter or data logger. 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 Proprietary 868 MHz or 915 MHz low-power wireless link to one compatible myenergi master device; no Wi-Fi, Ethernet, or standalone IP interface. 2.4 GHz Wi-Fi 802.11b/g/n with local HTTP/JSON API access on the same LAN; initial setup uses the HomeWizard Energy app.
Downstream protocols Up to three myenergi CT inputs for single-phase, three-phase, or multi-point measurement; wireless telemetry is sent to the paired zappi, eddi, or libbi master. P1/HAN smart-meter port using DSMR-style telegram data from one connected compatible utility smart meter; exposed upstream through HomeWizard local API v1/v2.
Connected devices 1 1
Role Battery-free energy-harvesting wireless CT sensor that relays grid, generation, battery, or load measurements to one paired myenergi master device. P1 smart-meter reader and Wi-Fi data logger for electricity import/export, gas, per-phase telemetry, 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. Optional for live LAN data; required for app history, Energy+, remote services, and smart-charging predictions.
Home Assistant Unknown Yes
Solar fit
Solar import/export Yes Yes
Buying context
Price range Unknown About EUR 25-EUR 40
Availability United Kingdom and Europe through myenergi channels; HARVI-65A3PR 915 MHz conformity is also published for Australia and New Zealand. Retail availability and radio variant vary 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 Sep 25, 2026 Sep 11, 2026
Product page Official page Official page
Documentation Official docs Official docs
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