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OpenEnergyMonitor emonPi3 6-Channel Energy Monitor vs Aeotec Home Energy Meter

Install fit
Phase support Single-phase and 3-phase 4-wire monitoring; 3-wire 3-phase is not supported by the reviewed shop configuration note. Region-specific 1-phase, 2-phase / split-phase, and 3-phase ZW095 variants.
Installation Wall-mounted CT energy monitor with integrated Raspberry Pi, emonVs voltage sensor / power input, and optional CT sensors selected for each circuit. Electrical-panel clamp-meter installation; US versions use plug-in power and EU versions are wired in. Licensed-electrician installation recommended.
Measurement 6-channel CT AC energy monitor with local emonCMS logging for grid, solar, EV, battery, heat-pump, and circuit monitoring. Clamp-based Z-Wave whole-home energy meter for consumption and solar / generator overproduction monitoring.
Max current 200 A 200 A
Meter fit
Accuracy class Unknown Over 99% measurement accuracy when current is greater than 0.05 A
Current sensing 6 CT sensor inputs; official shop options list 20 A, 50 A, 100 A, and 200 A voltage-output CT choices for CT1-CT6. ZW095 clamp SKUs: US 2-clamp 200 A version; EU 1-clamp 60 A and 3-clamp 60 A variants.
Monitoring
Protocol Ethernet / Wi-Fi / MQTT / emonCMS / 433.92 MHz OpenEnergyMonitor radio Z-Wave Plus
Local API Yes Yes
Cloud dependency Local-first: emonPi3 runs emonCMS locally and can access data over MQTT; posting to remote servers such as Emoncms.org is optional. No Aeotec cloud is required; the meter reports locally over Z-Wave to a compatible gateway. Remote app/cloud behavior depends on the chosen hub.
Home Assistant Yes Yes
Solar fit
Solar import/export Yes Yes
Buying context
Availability United Kingdom / EU through the official OpenEnergyMonitor shop; international availability depends on shipping, plug, voltage-sensor, and local installer suitability. Global / region-specific Aeotec Z-Wave SKUs; availability depends on local Aeotec retailer or distributor stock.
Source check
Last verified Jun 10, 2026 Jun 8, 2026
Product page Official page Official page
Documentation Official docs Official docs
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