Deye Microinverter - Cloud-free

Solar power generation work best if there are no clouds anywhere to be seen :)

This repository aims to document how to use Deye microinverters entirely local only and cloud free. It consolidates the knowledge that at the time of writing was spread over hundreds of different posts, issues and comments.

Furthermore, it also features a cloud replacement implementation so you won't have to install any apps or create any accounts. You also won't have to share any e-mail address or phone number.

Devices

So far, the following devices are known to work like this:

• Deye SUN600G3-EU-230
• Deye SUN-M80G3-EU-Q0

it should also be the same for other inverters of the same series including rebrands such as Bosswerk.
If you have verified that it works with another device, feel free to extend this list.

TL;DR

Here are the main things you will want to know about these microinverters:

• They have Wi-Fi
• They can be connected to Wi-Fi networks via their webinterface
• They can operate without an internet connection
• They can operate without an account
• They can be monitored and controlled via their local ModbusTCP interface
• You can also completely replace the cloud with a local implementation: dummycloud

Preamble

Compared to traditional PV setups where a single large inverter is connected to strings of many PV Panels, in a microinverter Setup, you have one small inverter for every 1-4 PV Panels.

There are up- and downsides to both of these topologies but that is for now out of scope for this document. What you need to know is that microinverters are cheaper and scaled-down versions of their larger brothers.

Because they only cost 150-200€ they make getting into solar power generation accessible for many more people than ever before. Paired with two PV Panels you're looking at an investment of at most 1000€ to get free energy from the sun.

Additionally, because you only need few panels for the setup to make sense financially, often a balcony or garden can be enough for a small solar setup. This is especially interesting for people living in rental properties.

Word of warning

After reading through way too many concerning posts and comments, here's what has to be said:

Please please please don't cut any corners when it comes to safety-critical stuff such as cabling and also mounting panels. You don't want your home to burn down or anyone to be killed by a falling 1.5m² 25kg PV Panel.

Electricity is dangerous. So are heavy things with a huge attack surface for wind.
When in doubt, contact a local electrician. They know what they're doing and will help you.

If people do stupid stuff with this technology, it will become inaccessible to every one of us, as there will be legislation preventing further idiot-induced injuries/harm, ruining everything for the vast majority of reasonable users.

Setup

Now with that out of the way, we can talk about what to do.

The first important thing to note is that these inverters will shut down if they don't sense at least 20V on at least one PV input. This means that you have to do all this during the day connected while connected to a PV panel.

Alternatively, some people reported that they got the inverter to wake up by connecting a 30V lab power supply to one of the PV inputs.

Joining Wi-Fi

By default, your microinverter should provide a Wi-Fi Access point with an SSID named similarly to AP_4151234567. Using a laptop, connect to that using the default AP password 12345678.

In a browser, navigate to the IP of the inverter in that network which should by default be http://10.10.100.254/. Log in to the webinterface with the default credentials admin:admin and use that to configure Wi-Fi.

The AP-mode can be a bit unstable so prepare for the webinterface stopping to work occasionally. Once the inverter is connected to you Wi-Fi, this should not be an issue anymore.

Ensuring a patched logger firmware

After joining the inverter to you Wi-Fi network, connect to the webinterface again but this time using the IP in your network.

Now, expand the Device Information on the Status page and ensure that your logger firmware version is at least MW3_16U_5406_1.53 or newer.

Older firmwares don't allow reconfiguration of the Wi-Fi AP, which is a a serious vulnerability, as it allows an attacker to easily gain access to your real Wi-Fi credentials.

If your firmware is older, you can find firmware update files in this repo: https://github.com/dasrecht/deye-firmware. You can flash them using the Upgrade Firmware page of the webinterface.

Securing the AP

With the logger firmware upgraded, you should now use the webinterface to change SSID and Password for the AP of the inverter.

Pick something not immediately obvious and relatively secure as - as mentioned before - it is all that prevents an attacker from connecting to that AP and reading out your main Wi-Fi credentials.

I have been told that you can also use the wizard to disable the AP entirely, however personally, I like having a fallback way into the inverter, especially since I did not see a "Factory Reset" button on the device.

Configuring your network

Now that the AP is secured, use the configuration interface of your router to block internet access of the inverter. You will also likely want to configure it, so that it will always get the same IP assigned via DHCP.

These things should be dropdowns and checkboxes in most consumer routers. If you run some advanced setup, you will know what to do.

You can also try to DNS-block access1.solarmanpv.com and access2.solarmanpv.com, however it seems that the logger firmware might also use hardcoded IPs? Either way, just blocking internet access entirely should be much easier in most setups anyway and comes with no known downsides.

Usage

After connecting the inverter to your Wi-Fi network, securing it and blocking its internet access, all you need to do now is monitor and control it.

For this there are different options.

Local polling

Most of the options rely on polling the local modbusTCP interface that uses the inverter logger serial number for authentication.

To get this serial, simply look at the sticker on the device:

If you feel like doing something arcane and/or want to build something for that yourself, you can find the Modbus spec for these inverters in the complementary assets repo: https://github.com/Hypfer/deye-microinverter-cloud-free-assets.

Note that with internet access blocked, the inverter never receives any time information. This breaks the Yield today counter as it will never properly reset unless you manually set the time on each boot using modbus register 22, 23 and 24.

With Home Assistant

With Home Assistant, the easiest way to get your inverter connected is by using HACS to install the Solarman custom_component. Please refer to the project documentation on how to install and configure those.

Home Assistant offers powerful tooling to store, visualize and process data right out of the box.

For example, here's how a solar dashboard could look like using mock data and only stock home assistant cards. The real world will obviously look slightly different but the idea should be the same:

With other smarthome software

If you're using OpenHAB, FHEM, ioBroker or something else, as long as it can speak MQTT, you can use for example https://github.com/kbialek/deye-inverter-mqtt to connect your inverter to your smarthome.

A docker-compose.yml entry for that tool could look like this:

  deyetomqtt:
    image: ghcr.io/kbialek/deye-inverter-mqtt
    container_name: "deyetomqtt"
    environment:
      - LOG_LEVEL=DEBUG
      - DEYE_DATA_READ_INTERVAL=60
      - DEYE_METRIC_GROUPS=micro
      - DEYE_LOGGER_SERIAL_NUMBER=4151234567
      - DEYE_LOGGER_IP_ADDRESS=192.168.178.123
      - DEYE_LOGGER_PORT=8899
      - MQTT_HOST=192.168.178.2
      - MQTT_TOPIC_PREFIX=deye
      - MQTT_PORT=1883
    restart: always

Keep in mind that this might change in the future so make sure to always check the docs of the project itself.

Using the dummycloud

If you don't want polling and/or are unhappy with having the inverter in a perpetual state of reconnection to the cloud, you can instead deploy the cloud replacement that can be found in the dummycloud folder in this repository.

This will make the inverter happy, provide it with the correct time for daily counters to work and push all the data to your MQTT broker. It will also autoconfigure entities for home assistant.

It is however a bit more complicated than the polling approaches, as it requires you to understand how networks work and how to deploy a service somewhere. Nothing too arcane of course but if you don't know anything about linux, you might want to pass on this.

For further information, check out the dummycloud folder.

Misc

Hidden configuration page

These inverters also have a hidden configuration page that is reachable via /config_hide.html.

There, it is possible to configure

• Cloud Server A and B
• Serial Port parameters (which serial port?)
• The port of the modbusTCP server of the inverter
• Enable/Disable the AP
• Switch the branding(?)

Click here to show a screenshot of the page

AT Commands

Apart from the modbus over tcp interface, these inverters also provide another interface on port 48899 where you can talk to it over AT commands like a modem. For that, for now you can use this tool: https://github.com/s10l/deye-logger-at-cmd.

Some firmware versions seem to respond to the AT+H command with a full list of commands. Mine doesn't, however a user fortunately posted a full response which is the source for this table:

Click here to show the AT command table

Command	Vendor Description
AT+TIME	Set/Get Device Time
AT+ADDRESS	Set/Get Device Address
AT+KEY	Set/Get Device Password
AT+MTYPE	Set/Get Device Mtype
AT+CNMOSAVE	Set/Get TCPB Link Mode
AT+DEVICENUM	Set/Get Device Link Num
AT+DEVSELCTL	Set/Get Web Device List Info
AT+NDBGS	Set/Get Debug Status
AT+FFCLER	Clear File in Flash
AT+LANGSEL	Select Language
AT+ADTIME	Set/Get Device Time
AT+YZFTIME	Set/Get Device factory Time
AT+TZEARSE	Clear yz File in Flash
AT+YZACK	Clear yz File in Flash
AT+YZTIME	Clear yz File in Flash
AT+YZWKTIME	Clear yz File in Flash
AT+YZERRCLR	Clear yz File in Flash
AT+YZDBNUM	Clear yz File in Flash
AT+YZDB	Clear yz File in Flash
AT+YZVER	Clear yz File in Flash
AT+YZLOG	Clear yz File in Flash
AT+YZAPP	Clear yz File in Flash
AT+YZAPSTAT	Clear yz File in Flash
AT+YZsize	Clear yz File in Flash
AT+YZsize	Clear yz File in Flash
AT+YZsize	Clear yz File in Flash
AT+YZsize	Clear yz File in Flash
AT+YZsize	Clear yz File in Flash
AT+YZsize	Clear yz File in Flash
AT+YZsize	Clear yz File in Flash
AT+YZWAKEYCTL	Clear yz File in Flash
AT+YZsize	Clear yz File in Flash
AT+YZFLSHTEST=,<devlist_status>
AT+YZFLSHTEST=,<devlist_status>
AT+YZVER	Clear yz File in Flash
AT+YZVER	Clear yz File in Flash
AT+YZVER	Clear yz File in Flash
AT+YZVER	Clear yz File in Flash
AT+YZVER	Clear yz File in Flash
AT+YZEXPFUN	Clear yz File in Flash
AT+YZEXPFUN	Clear yz File in Flash
AT+YZEXPFUN	Clear yz File in Flash
AT+YZEXPFUN	Clear yz File in Flash
AT+YZEXPFUN	Clear yz File in Flash
AT+YZEXPFUN	Clear yz File in Flash
AT+TMODE	Set/Get the UART work mode.
AT+ENTM	Goto Through MOde.
AT+UART	Set/Get the UART0/UART1 Parameters.
AT+WSMAC	Set/Get Module MAC Address.
AT+WAMAC	Get Module MAC Address in AP mode.
AT+NDBGL	set/get debug level
AT+RELD	Reload the default setting and reboot.
AT+RLDEN	Put on/off the Reload Pin.
AT+MID	Get The Module ID.
AT+WRMID	Write Module ID.
AT+ASWD	Set/Query WiFi configuration code.
AT+VER	Get application version.
AT+BVER	Get bootloader version.
AT+HWVER	Get hardware version.
AT+FCLR	Clear Fsetting.
AT+CFGRD	Get current system config.
AT+CFGTF	Save Current Config to Default Config.
AT+SMEM	show system memory stat
AT+OTA	OTA
AT+UPURL	Set/Get the path of remote upgrade.
AT+CMDPW	Set/Get cmd password in throuphput mode.
AT+UID	Set/Get UID.
AT+E	Echo ON/Off, to turn on/off command line echo function.
AT+Z	Reset the Module.
AT+SRST	Soft Reset the Module.
AT+H	show help
AT+NETP	Set/Get the Net Protocol Parameters.
AT+TCPLK	Get The state of TCP link.
AT+TCPTO	Set/Get TCP time out.
AT+TCPDIS	Connect/Dis-connect the TCP Client link
AT+MAXSK	Set/Get MAX num of TCP socket (1~5)
AT+RCV	Recv data from socket_a
AT+SEND	Send data to socket_a
AT+SOCKB	Set/Get Parameters of socket_b.
AT+TCPLKB	Get The state of TCP_B link.
AT+TCPTOB	Set/Get TCP_B time out.
AT+TCPDISB	Connect/Dis-connect the TCP_B Client link.
AT+RCVB	Recv data from socket_b
AT+SNDB	Send data to socket_b
AT+WMODE	Set/Get the WIFI Operation Mode (AP or STA).
AT+WSSSID	Set/Get the AP's SSID of WIFI STA Mode.
AT+WSKEY	Set/Get the Security Parameters of WIFI STA Mode.
AT+WSLK	Get Link Status of the Module (Only for STA Mode).
AT+WSLQ	Get Link Quality of the Module (Only for STA Mode).
AT+WAP	Set/Get the AP parameters.
AT+WAKEY	Set/Get the Security Parameters of WIFI AP Mode.
AT+WALK	Show sta information of AP connection.
AT+WALKIND	enable/disable LED indication of AP connection.
AT+WAPMXSTA	Set/Get the Max Number Of Sta Connected to Ap.
AT+WSCAN	Get The AP site Survey (only for STA Mode).
AT+SMTLK	Start Smart Configuration.
AT+SMTLKST=mode,protocol	Setup smartlnk mode and protocol.
AT+SMARTAPCONFIG	Enable/disable smart AP config function.
AT+SMARTAPSTART	Start smart AP config function.
AT+WPS	Start WPS.
AT+DISPS	Disable power saving mode of WIFI
AT+WIFI=UP/DOWN	Power down or up the wifi chip.
AT+MDCH	Put on/off automatic switching WIFI mode.
AT+WSLKO	Enable/Disable connect router with the best signal.
AT+DTIM	Set/Get station listen interval(1~3).
AT+UDPLCPT	Set/Get local UDP port.
AT+PING	General PING command.
AT+WANN	Set/Get The WAN setting if in STA mode.
AT+LANN	Set/Get The LAN setting if in ADHOC mode.
AT+WADHCP	enable/disable AP dhcp server and set ip address pool
AT+WEBU	Set/Get the Login Parameters of WEB page.
AT+WEBVER	Get WEB version.
AT+PLANG=EN/CN	Set/Get the language of WEB page.
AT+WSDNS	Set/Get the DNS Server address.
AT+NTPEN	Enable/Disable NTP Server.
AT+NTPRF	Set/Query NTP.
AT+NTPTM	Set/Query Ntp Time.
AT+NTPSER	Set/Query Ntp Server.
AT+TXPWR	Set/Get wifi rf tx power.
AT+RFTESTMODE	RF test mode ON/OFF.

Donate

If this software and documentation effort brought value to you, there's the option to leave a small donation using the "Sponsor" button on top of the repo or by clicking right here.

Thanks!