SunSpec Modbus 

SunSpec Modbus is an open standard, referenced in IEEE 1547-2018, that enables interoperability amongst DER system components. The SunSpec Alliance currently manages SunSpec Modbus testing directly and is in the process of transferring testing responsibilities to SunSpec Authorized Test Laboratories.

The SunSpec Modbus package includes:

  • Modbus Fact Sheet
  • SunSpec Technology Overview
  • SunSpec Information Model Specification
  • SunSpec Information Model Reference
  • SunSpec Modbus for IEEE 1547 Conformance Profile
  • Download from Github
  • SunSpec Energy Storage Model Description
  • SunSpec Inverter Model Description
  • SunSpec UL1741 Supplement SA/ CA Rule 21 Implementation Guide
  • Report from IREC, “Making the Grid Smarter: State Primer on Adopting the New IEEE Standard 1547™-2018 for Distributed Energy Resources”


Download SunSpec Modbus Specifications