SolarEdge SE66.6K/SE100K Synergy

Commercial PV inverter

SolarEdge documents read-only inverter monitoring through SunSpec Modbus RTU or TCP for SetApp-configured Synergy inverters. Only one Modbus leader or TCP session is supported at a time. This guide covers SE66.6K and SE100K. It excludes every write, dispatch and protection function.

  • Modbus TCP
  • Modbus RTU
  • SunSpec Modbus

Commercial PV inverter

Compatibility

Compatible for read-only SunSpec monitoring

SolarEdge's current SunSpec implementation note covers SetApp-configured inverters and documents both Modbus RTU over RS-485 and Modbus TCP over wired Ethernet.

SetApp-configured SE66.6K or SE100K Synergy inverter with exact part number and firmware recorded. One read-only Modbus leader or TCP session only; no write or control functions.

Connect it with

Route into Edge

When the wired LAN can dedicate the inverter's single Modbus TCP session to Edge

  • Modbus
  • Edge
  • Platforms
Commercial PV inverter
Interface
Gateway
Edge
Output
SE66.6K/SE100K SynergySynergy Manager wired Ethernet
Protected EthernetSegmented LAN
ZGW-20 GatewayHosts Edge locally
EpiSensor EdgeEdge Modbus TCP client
Customer platformMQTT · API · files
Modbus TCP
Protected Ethernet
Runs locally
Optional onward data
Use wired Ethernet, the configured port and inverter unit ID. SolarEdge documents a single TCP connection, so confirm no logger or controller already owns it. The customer-platform output is optional; Edge remains the local system of record.

When Edge is the single permitted Modbus leader on the selected RS-485 bus

  • Modbus
  • Edge
  • Platforms
Commercial PV inverter
Interface
Gateway
Edge
Output
SE66.6K/SE100K SynergySynergy Manager RS-485 port
Isolated serial interfaceApproved RS-485-to-host adapter
ZGW-20 GatewayHosts Edge locally
EpiSensor EdgeEdge Modbus RTU client
Customer platformMQTT · API · files
Modbus RTU · RS-485
Isolated serial
Runs locally
Optional onward data
Configure SunSpec Non-SE Logger mode, a unique unit ID and the documented serial framing. Do not share the leader role or displace SolarEdge follower wiring. The customer-platform output is optional; Edge remains the local system of record.

Models

Download
ModelsInterfaceRoute into Edge
SE66.6K66.6 kW for 380/400 V grids; two Synergy UnitsRecord the complete SExxK part number and firmware.
SE100K100 kW commercial Synergy inverterUse the exact rating and regional part number.
SE90K and SE120KOther Synergy ratings outside the retained exact datasheetConfirm separately before use.

Specifications

The retained exact datasheet covers SE66.6K and SE100K commercial Synergy inverters. Part-number and regional availability matter, so rating alone is not a commissioning identity.23

Covered models
SE66.6K and SE100K commercial Synergy inverters2
TCP transport
Wired Ethernet only; disabled by default; default port 1502; one connection1
RTU transport
RS-485 SunSpec Non-SE Logger mode; unique unit ID 1-247; one leader1
SunSpec models
Common and inverter models 101, 102 or 103; Synergy units may expose model 1601

Interface

Documented measurements and integration boundaries for SE66.6K/SE100K Synergy.

  • Manufacturer, model, serial number and firmware from the SunSpec common model.
  • Inverter AC and DC measurements, energy and state from the implemented read-only SunSpec models.
  • Synergy module information where model 160 is returned by the exact inverter firmware.

Assessment

SetApp-configured SE66.6K or SE100K Synergy with one Modbus client and no writes.

InteroperabilitySupported with conditions
SolarEdge publishes exact SunSpec RTU and TCP setup, model and session rules; the single-client limit must be accommodated.1
AccuracySupported with conditions
Read-only inverter and Synergy monitoring models are documented, subject to exact model and firmware implementation.12
SecurityLimited
Local Modbus has no transport encryption or peer authentication, so LAN isolation, client control and read-only enforcement are required.1
ReliabilitySupported with conditions
Firmware releases and operating behavior are documented; communications recovery and session ownership need site testing.13
RuggednessSupported with conditions
Mechanical and environmental limits are published for the exact family and remain subject to the regional part number.2
ScalabilityLimited
Addressed RS-485 is documented, but one leader and one TCP session constrain larger monitoring designs.1
LifecycleSupported with conditions
SolarEdge publishes a versioned interface note, family datasheet and firmware history; installed configuration and version records remain necessary.123

Setup

Read Synergy power through SunSpec

Use the published SolarEdge map as a best-effort starting point. Requests below use zero-based wire addresses; the PLC address column is one higher. Example response bytes are synthetic.

Connection
Wired LAN: enable Site Communication > Modbus TCP. Default port 1502 and direct-inverter unit ID 1; use the configured values. Reserve its single client session. For RTU, use the configured unique ID and serial settings; default framing is 115200 bit/s, 8N1.
Identity and model
FC03 wire 40000, quantity 2: PDU 03 9C 40 00 02 returns SunS (53 75 6E 53). Read manufacturer at 40004, model at 40020 and serial at 40052. The published common-model length is 65: header 40002 +2 +65 = inverter header 40069, where a three-phase inverter reports model 103.
Power request
FC03 wire 40083, quantity 2: PDU 03 9C 93 00 02. I_AC_Power at 40083 and its scale factor at 40084 are signed int16. PLC addresses are 40084 and 40085. If the discovered model position differs, use model 103 header +14 and +15.
Decode the response
Synthetic data 30 39 FF FF gives power 12345 and scale factor -1: 12345 × 10^-1 = 1234.5 W. Decode each word as signed; this pair is not Float32. Treat 0x8000 as unavailable, separately from zero.
Add frequency and state
Frequency uses FC03 wire 40085, quantity 2: unsigned value and signed scale factor. State is wire 40107, quantity 1: 4 means producing power, 5 curtailed production, 7 fault. Start with these inverter readings before adding optional Synergy module data.

Acceptance: Compare fresh power and state with the local inverter display or app. Preserve the existing logger and control configuration. This is a document-based monitoring example, not a physical Edge test.

  1. Confirm the exact Synergy inverter

    Record the complete part number, rating, grid voltage, serial number, SetApp configuration and firmware. Confirm the regional model matches the site.

  2. Find the current communications owner

    Identify any SolarEdge logger, non-SolarEdge logger or TCP client. The inverter supports one Modbus leader and one TCP session, so do not interrupt an operational system.

  3. Configure one read-only route

    For TCP, use wired Ethernet and the configured port. For RTU, use SunSpec Non-SE Logger mode, a unique ID and documented framing. Keep writes outside the client.

  4. Discover SunSpec models

    Read the SunS signature at wire 40000 and the common-model identity. The published map places model 103 at wire 40069 and signed power/scaling at 40083/40084. Discover the returned headers before polling.

  5. Validate identity and a measurement

    Match manufacturer, model, serial and firmware, then compare one live power value and state with the commissioned SolarEdge interface before adding more points.

Common questions

Can Edge share the inverter with another Modbus TCP client?
SolarEdge documents one TCP connection. Confirm the session is available rather than interrupting an existing logger or plant system.1
Can Modbus TCP use the inverter's Wi-Fi connection?
No. The implementation note specifies Modbus TCP over wired Ethernet LAN, not Wi-Fi.1
Does this guide publish SolarEdge write or power-control registers?
No. The integration is read-only. Dispatch, export control, protection and grid services require a separate engineered and accepted design.1
Does this guide also cover SE90K or SE120K?
No. They are related Synergy ratings, but this guide is bounded to the SE66.6K and SE100K models named by the retained exact datasheet.23

Sources

  1. SunSpec implementation technical note, version 3.3 (opens in a new tab) (PDF) SolarEdge
  2. Three Phase Inverter with Synergy Technology Datasheet (opens in a new tab) (PDF) SolarEdge
  3. Firmware updates for commercial inverters (opens in a new tab) SolarEdge

Further reading

Product names and trademarks belong to their owners. Publication does not imply endorsement or a commercial relationship.