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This integration exposes the information and functions made available by Huawei Solar inverters directly via one of its Modbus interfaces in Home Assistant.
HA Energy Dashboard
To enable these advanced features, you need to select ‘Elevate permissions’ during the setup of this integration.
This integration supports two connection modes to SUN2000 inverters:
- direct serial connection to the RS485A1 and RS485B1 pins of the COM port
- network connection
Detailed information can be found on the ‘Connecting to the inverter’ Wiki-page
- Install this integration with HACS, or copy the contents of this repository into the custom_components/huawei_solar directory
- Restart HA
- Start the configuration flow:
- Or: Go to Configuration. Integrations and click the Add Integration. Select Huawei Solar from the list
- Choose whether you want to connect via serial or network connection
- Select the USB to RS485 converter that you connected to the RS485A1 and RS485B1 pins of your inverter. The Slave ID should be identical to the Com address set in the RS485_1 settings.
- Enter the IP address and port on which the Modbus-TCP interface is available. Some pointers:
- The port is either 502 or 6607.
- When connecting to the inverter AP the host IP is typically 192.168.200.1 and the slave ID is typically 0.
- When connecting to an SDongle, the slave ID is typically 1. Make sure to give this device a fixed IP!
Checking the Advanced: elevate permissions checkbox will:
- give you access to optimizer data
- enable you to dynamically change your inverter and battery settings
- When using the elevate permissions feature in combination with certain connection methods (most TCP-connections, not for serial connections), you will be asked to enter the credentials to the installer account in a next step. These are the credentials used to connect to the inverter in the Device Commissioning section of the FusionSolar App. The default password is either 00000a or 0000000a. If necessary, you can perform a password reset. This will not reset other parameters like the FusionSolar Cloud connection or other changes made by the firm which did your solar installation.
Inverter polling frequency
The integration will poll the inverter for new values every 30 seconds. If you wish to receive fresh inverter data less (or more) frequently, you can disable the automatic refresh in the integration’s system options (Enable polling for updates) and create your own automation with your desired polling frequency.
– alias: Huawei Solar inverter data polling trigger:. platform: time_pattern hours: minutes: seconds: /10 action:. service: homeassistant.update_entity target: entity_id: sensor.inverter_daily_yield
Note that optimizer data is refreshed only every 5 minutes, which matches how frequently the inverter refreshes this data.
Technology
Advanced Partial and Full Optimization Capabilities
Huawei’s inverters incorporate optimization abilities. This sets them apart from all other solar inverter. Typically, optimizers are modules that have to be connected to solar panels to optimize their performance but Huawei’s first-gen SUN200L range come with full panel optimization capability. The second-generation inverter range incorporates an even more powerful optimization capability. In this way, Huawei retains traditional string inverter technology in making hybrid inverters.
The application of an optimizer or micro-inverters in a solar inverter is to monitor and optimize the performance and output of a solar panel. By incorporating this capability in its solar inverters, solar panels connected to the inverter are able to function with or without optimizers. They provide extra performance benefits against shading, panel mismatch and manufacturing issues, current and voltage leakage, micro-cracking, hot spots, soiling, etc. In addition to other additional performance benefits.
Huawei inverters are compatible with the popular LG Chem battery and a new Huawei battery system, the LUNA2000. They also incorporate a inbuilt battery charger that can be connected directly to a battery.
A Smart Natural Cooling System
Most modern inverters include built-in cooling fans and vents that aid the dissipation of accumulated heat in the inverter. Cooling fans are incorporated to aid the flow of heat away by natural convention.
Huawei’s inverters do not have cooling fans and depends on a design architecture that aids natural heat dissipation. This intelligent design ensures that the inverter has no hot spots and emits very little noise. Since cooling fans draw power from the inverter, this design increases power generation and gives the inverter a high protection level, reliability and corrosion resistance.
Huawei inverters do not have the typical LCD screen, monitors, buttons or other displays like other inverters. Setting up, using and monitoring the inverter can be done through Wi-Fi. In a way, this helps prevent malfunction.
Huawei’s inverters come with a high ingress protection (IP) rating. This means they are resistant to a heavy force of water at a jet speed and heavy accumulation of dust.
IV-Curve Testing For Large-Scale Installations
Huawei hybrid inverters are able to track up to twenty problems in a large-scale installation. With just a ten-minute test, it can detect blown diodes to micro-cracks, shading, panel contrasting, or even grubby panels.
The FusionSolar software is a Cloud-based monitoring portal with an interactive UI/UX interface where users can monitor their power usage patterns.
Huawei’s Inverter Range
Huawei offers two range of residential inverters, the SUN2000L with capacities between 2kW to 5kW and the SUN2000L1 with capacities ranging from 2kW to 6kW. They come in single and three-phase configurations.
The SUN2000L1 inverter is an upgraded version of the SUN200L with a more powerful optimizers and a compatibility with the Huawei LUNA2000 battery system. The SUN2000-L1 series also features ‘dual MPPT’s’ and a wide operating voltage range of 120V to 600V.
They have a compact and lightweight design. They also do not have any displays, having only 3 LED indicators. They also feature an integrated DC isolator.
Huawei also has a range of inverters for commercial and utility installations with power ratings of up to 60kW.
Warranty
Huawei offers a ten-year warranty on their inverters. This warranty goes into effect on the 180th day after the shipment from Huawei or on the installation date. It covers the price of a spare, logistics and replacement costs. At a upfront fee, it can be extended for another 10 years.
Huawei makes inverters that have a secure position on many lists of ‘best inverters’. Like most manufacturers in China where labour and materials are cheap, Huawei offers first grade performance at a relatively lower price than its European and American competitors. Huawei also provides extensive customer support for any query, remote maintenance or technical support for the faulty products through email or phone call.
SolarKobo helps homeowners and businesses in Lagos and throughout Nigeria make the best choice of inverters. We are always confident and happy to recommend Huawei inverters.
Huawei’s next-gen ‘FusionSolar’ residential Smart PV solution aims for 100% self-consumption
Huawei has launched its next generation ‘FusionSolar’ residential Smart PV solution with the emphasis on innovative Smart technologies to provide the easiest and highest safety installation standards and long-term operability that aims for 100% self-consumption.
Unlock unlimited access for 12 whole months of distinctive global analysis
Residential PV rooftop systems need to meet increased demand for higher levels of self-consumption. Energy storage systems are therefore required. However, residential installers need to provide homeowners with a robust, future-proofed self-consumption system that remains highly efficient, flexible and faster to install and come with Smart solutions for user needs and customer service such as remote fault diagnostics for minimal maintenance.
PV energy generated by solar panels meets the electricity demand of homes in the daytime, and the surplus energy generated is used to charge batteries, which then discharge to meet peak electricity requirements at night and in the morning. In this way, residential PV systems could achieve high self-consumption levels. Huawei’s residential intelligent battery LUNA2000 is the highlight of the solution. This battery features a streamlined appearance and uses lithium iron phosphate cells for increased safety. It adopts modular design and supports flexible power expansion (5–30 kWh). Each battery pack has a built-in energy optimizer and supports independent charge and discharge management. The FusionSolar system is available with optional PV power optimizers that limit residential shading issues and enable complex mixed orientated rooftops to efficiently be deployed with a PV system. Huawei designed power optimizers could maximize PV modules’ energy yields by up to 30%, regardless of shading and inconsistent orientations, according to the company. The AI-Powered Arc Fault Circuit Interrupter (AFCI) proactively mitigate fire risk with Rapid shutdown technologies achieving zero voltage on the rooftop and zero arc risks for dual-layer protection. Huawei is the first in the industry to integrate the AI algorithm into AFCI, enabling three unique features. First, the AI model continuously and efficiently learns more arc features, forming a database with over millions of arc signatures. Second, more than 92 arc features comparison points are identified and analyzed based on the powerful computing capability of the local chip to implement precise detection and accurate reporting for better protection. Third, the power system is shut down within 0.5s, which is much shorter than 2.5s specified in the industry standard.
The FusionSolar Smart residential PV inverter portfolio consists of both single and three phase products. The single-phase string inverter comes in the SUN2000-2/3/3.68/4/4.6/5/6KTL-L1 classes with 2 MPPT inputs and built in WLAN and optional Smart Dongle-WLAN-FE or Smart Dongle-4G communication. The single-phase inverters are compatible with Huawei’s SUN2000-450W-P power optimizers. The three-phase string inverter comes in the SUN2000-3/4/5/6/8/10KTL-M1 classes with 2 MPPT inputs and built in WLAN and Smart Dongle-WLAN-FE or optional Smart Dongle-4G communication. This is also compatible with Huawei’s SUN2000-450W-P power optimizers and includes Huawei’s PID Recovery solution. The Smart Energy Storage System, LUNA2000 5-30kWh has a capacity of 5kWh per module with up to 30kWh total capacity when using a maximum of 2 linked EES. The LUNA200 comes in a standard floor mounted configuration with a wall mounting system optional. Is a IP65 rated enclosure for both outdoor and indoor locations. Output Voltage is 400 / 800Vdc. Warranty is for 10 years or ≥4,500 cycles. The SUN2000-450W-P optimizers have DC MBUS communication to the string inverter. Module-level monitoring and has open circuit impedance of 1K Ohms for installation verification. Reduces PV wires to a safe voltage when inverter is shut down (Compliant to NEC2017). The Smart Power Sensor DDSU666-H (Single Phase) and DTSU666-H 250A/50mA (Three Phase) are RS485 connected to the inverter. Have Class 1 high accuracy meter readings for production/consumption monitoring and import/export meter readings for export limitation functionality and a current transformer is included. The FusionSolar APP supports local system commissioning and plant registration. Registering plant can be done by scanning any equipment in the system. It has auto-detection of system equipment. The Smart PV Management System provides Real-time energy flow and energy balance readings, PV panel.level performance management and Demo site for all guests to experience system capabilities. Control Mode setting options include maximum self-consumption that is prioritized over exporting to the grid and prioritizes storing PV energy over feeding excess PV energy into the grid. A Time of Use mode means electricity is more expensive at times of high demand (peak rate) than at times of low demand (off-peak rate), customers will automatically consume more when it is cheaper and save when it is expensive.
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Christian Roselund served as US editor at pv magazine from 2014 to 2019. Prior to this he covered global solar policy, markets and technology for Solar Server, and has written about renewable energy for CleanTechnica, German Energy Transition, Truthout, The Guardian (UK), and IEEE Spectrum.