SunSpec Modbus

SunSpec Modbus

SunSpec Modbus communication interfaces–available for smart inverters, energy storage devices, meters, trackers, and other balance-of-system components–reduce integration costs and improve system reliability by providing a standard communication method for DER system components.
SunSpec Modbus is specified in the national grid codes of the U.S., Canada, Denmark, and Poland and it widely-adopted all over the world.

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Resources and Specifications

The SunSpec Modbus Specification Package includes the following items:

  • SunSpec Modbus Fact Sheet
  • SunSpec Technology Overview
  • SunSpec Device Information Model Specification
  • SunSpec DER Information Model Specification
  • SunSpec Information Model Reference (includes APPROVED 700 Series DER Models)
  • SunSpec Model Definition (Includes SMDX and JSON) (Download from Github)
  • SunSpec Energy Storage Model Description
  • SunSpec Modbus Vendor Extensions
  • SunSpec Modbus IEEE 1547-2018 Specification, Profile and Implementation Guide
  • SunSpec SVP Dashboard Download
  • SunSpec SVP Dashboard License Request (Membership required)

Applicable Components and Scope

Applicable Components and Scope

Applicable Components

Inverters, batteries, meters, string combiners, trackers, metrology stations, and charge controllers.

SunSpec Modbus Open Standard Interoperability

SunSpec Modbus open standard diagram IEEE 1547-2018 communication interfaces diagram

News and Updates

February 20, 2025
News - SunSpec Alliance
SunSpec Accepts Nomination to Manage CSIP Test Procedures
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February 13, 2025
Webinars - SunSpec Alliance
Webinar: SunSpec – Intersolar & Energy Storage North America
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October 29, 2024
Member News - SunSpec Alliance
Member Only News - SunSpec Alliance
News - SunSpec Alliance
Modbus Specification Updates
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COMPLETE FORM TO ACCESS SPECIFICATIONS

This form is intended to collect input, suggestions and technical feedback that will be integrated into SunSpec Alliance specifications and test specifications currently awaiting approval. 

By filling out this form, Responder agrees that any such feedback is given on a non-confidential basis and hereby waives any confidentiality restrictions for such Feedback. In addition, Responder grants to SunSpec Alliance a worldwide, non-exclusive, perpetual, irrevocable, sublicensable through multiple tiers of sublicensees, royalty-free right and license under Responder’s copyrights to use, copy, reproduce, modify, create derivative works and directly or indirectly distribute, make available and communicate to public the Feedback in or in connection to any SunSpec Alliance work products.

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