Device overview

The GoodWe Smart Meter GM3000 is the three-phase member of GoodWe's smaller smart-meter family. It is aimed at homes and small sites that use compatible GoodWe inverters and need clearer grid, load, and export data for monitoring and energy-management functions.

Unlike a general-purpose standalone meter platform, GM3000 is best understood as an ecosystem meter. Its main value is not broad third-party app flexibility. Its value is that it gives a compatible GoodWe inverter the information it needs for household energy visibility and export-management workflows.

Core characteristics

GoodWe's current official family page presents GM3000 as a three-phase smart meter with RS485 communication, compact modular dimensions, and CT-based sensing. The official Smart Meter datasheet lists GM3000 with three 120A:40mA current transformers, 230/400 V three-phase grid context, Class 1 voltage/current and active-energy accuracy, Class 2 reactive-energy accuracy, and DIN-rail mounting.

The source set supports the following practical positioning:

  • three-phase smart meter for GoodWe inverter ecosystems
  • CT-based measurement rather than direct-connected high-current metering
  • DIN-rail installation for electrician-led switchboard work
  • strongest fit where a GoodWe inverter already anchors the monitoring setup

Installation and electrical fit

For buyers and installers, installationType, phaseSupport, currentSensorSetup, and maxCurrentAmps matter because they shape whether the device fits the board layout and service type without forcing workarounds.

GM3000 is a DIN-rail mounted three-phase smart meter that uses three included CT clamps. GoodWe's published material supports treating 120 A as the relevant per-phase current ceiling for this family configuration. This makes GM3000 a better fit for three-phase GoodWe solar sites that need inverter-coordinated monitoring and export awareness, rather than for buyers looking for a fully standalone DIY app-first meter.

Connectivity and integration

GM3000 communicates over RS485 / Modbus and is positioned by GoodWe as part of its inverter and SEMS energy-management workflow. For EnergyMeterHub comparison fields, supportsLocalApi is therefore treated as true only for the local RS485 / Modbus meter path into compatible GoodWe inverter systems, not as a claim that GM3000 exposes its own standalone LAN API.

Home Assistant support should be read the same way. Home Assistant's official GoodWe integration polls compatible GoodWe inverters over the local network and can expose the runtime sensors available from that inverter family and connected system. For this page, supportsHomeAssistant means the GM3000 can be represented through a compatible GoodWe inverter integration when that inverter exposes meter-derived sensors; it is not a GM3000-native Home Assistant integration.

Best-fit use cases

GM3000 makes the most sense when:

  • the site already uses a compatible GoodWe inverter
  • three-phase grid measurement is needed
  • the goal is cleaner import/export and load visibility inside GoodWe's own energy workflow
  • export limiting or inverter-coordinated control matters more than broad standalone software flexibility

Advantages and limits

The clearest advantages are ecosystem fit, three-phase support, included CTs, compact DIN-rail form factor, and a source-backed role in GoodWe monitoring and power-management setups.

The main limits are equally important:

  • this is not positioned as a broad standalone local-API meter platform
  • Home Assistant support depends on the compatible GoodWe inverter path, not a native GM3000 integration
  • buyers outside the GoodWe ecosystem may get less value than they would from a more neutral Modbus meter or a more open monitoring stack

Buying and source notes

GoodWe's official product page is contact-led rather than a normal retail checkout page, so the purchase path is best treated as installer-led or distributor-led. The current source set was used to validate the meter's role, three-phase fit, CT inclusion, communication method, accuracy claims, local RS485 convention, and Home Assistant-through-inverter convention on 2026-06-09.