GoodWe GW12K-ES-C10 - single-phase, 12 kW hybrid inverter, with generator support

Technologies and key benefits

• 48 V battery bus + high charge/discharge current. For the 12 kW model, a battery range of 40–60 V and continuous current up to 240 A is declared - this is important when you need to "pull" peak loads from the battery without noticeable dips.

• Powerful PV input and 2 MPPTs. The GW12K-ES-C10 is rated for up to 24 kW of solar input, with an MPPT operating range of 60–550 V, giving freedom in stringing and array angles/orientation.

• UPS-level reserve. The ES Uniq series claims a switchover to reserve of <4 ms, so critical consumers (network equipment, boiler automation, security) can experience failures without rebooting.

• Microgrid and weak grid operation. Micro-grid scenario is supported and coordinated operation with PV inverter for more stable power supply in difficult grid conditions.

• 3-in-1 port for “generator + smart loads + grid inverter” scenarios. This is convenient in real-world installations where you need to prioritize critical lines and manage “smart” consumers.

• Protection and reliability. IP66 rated, AFCI (arc flashover protection) and other built-in safety features are useful for installation in technical rooms, garages, boiler rooms.

Low noise: smart + passive cooling

The ES Uniq series uses natural convection (passive heat transfer) combined with intelligent fan cooling : active blowing is activated by temperature, and in typical modes the inverter does not “roar” constantly. This directly affects comfort if the inverter is placed near residential areas.

Fast installation and scaling

Installation is wall-mounted, the housing is compact for the 12 kW class ( 560 × 444.5 × 226 mm, weight ~29 kg ), there is an LCD interface and network communications ( Wi-Fi / LAN / Bluetooth ), which speeds up commissioning.
To increase power, parallel operation of up to 6 inverters is allowed (on-grid and off-grid scenarios).

An important nuance regarding the generator: the quick guide for ES Uniq 8–12K states that generator connection is supported when there is only 1 inverter in the system; it is not supported when there are multiple inverters . This must be included in the design of parallel systems.

Generator compatibility: requirements and model examples

The key parameters for the GW12K-ES-C10 generator input are: 230 V nominal, operating range 170–280 V, frequency 45–55 / 55–65 Hz , and 12 kVA nominal (up to 13.2 kVA maximum ). In practice, this means: generators with AVR or inverter (pure sine wave) and stable frequency/voltage are best suited.

Table of examples of compatible generators (by parameters 230V/50Hz and stabilization class)

These are examples of models that fit within typical generator input voltage/frequency requirements . Actual compatibility in a particular installation is determined by settings, sine wave quality, and load stability.

Safety: Generators should only be used in compliance with ventilation and connection standards - this is the responsibility of a qualified electrician.

What batteries is the GW12K-ES-C10 compatible with?

The inverter supports Li-Ion (including LiFePO4 and NMC) and lead-acid batteries in the 48-volt class, with exchange via CAN (BMS).

GoodWe specifically emphasizes that only batteries from the official compatibility list are considered "approved" in the context of the warranty. Examples of popular series from the GoodWe Battery Compatibility Overview list:

• GoodWe Lynx Home U/Lynx Home A (including LX U5.4-L, LX U5.4-20, LX A5.0-10, etc.).

• Pylontech ( US2000/US3000 / Force L1/Force L2, etc. - depending on revisions and firmware).

• Dyness ( DYNESS-LV, POWERBOX lines, etc.).

• The document also includes other brands in the LV segment (for example, BYD LV line, LG RESU LV, etc.).

Integration with Home Assistant and openHAB (OpenHub)

Home Assistant

1. At the inverter level, the ES Uniq series has Modbus-RTU and Modbus-TCP, so integration is possible via a Modbus bus/network.

2. There is also an official Home Assistant integration “GoodWe Inverter” , which usually works with GoodWe inverters that comply with the exchange protocols and listen on UDP port 8899.

openHAB

• openHAB has Modbus Binding for Modbus TCP/serial, so ES Uniq can be connected via Modbus-TCP/RTU (depending on the communication scheme).

• If you don't need instant data, but statistics/indicators from the cloud, there is SEMSPortal Binding (read-only) to integrate parameters with SEMS/GoodWe.