SunSpec Ecosystem Newsletter September 2021

Addressing new interconnection requirements–including those for advanced inverter electrical functions and corresponding data communication interfaces–is a recurring theme for SunSpec and its members. While some requirements are local, and therefore less urgent to address, at least two national markets, the U.S. and Australia, have implemented changes that have firm deadlines. Companies that meet these deadlines have the potential to reshape the market.

Four SunSpec Specifications Now in Countdown to APPROVAL

We’re excited to announce that four SunSpec specifications have entered the final countdown of moving from TEST to APPROVED status. During this 45-day window for technical comments and IPR Review, which will begin on March 11, 2021 and conclude on April 20,...

SunSpec Modbus Technology Overview

The SunSpec Technology Overview document provides a theory of operation for the SunSpec Modbus interface. Please submit your information to download the document.  Please enable JavaScript in your browser to complete this form.Name *FirstLastCompany *Title *Email *I...

SunSpec Information Model Reference

Describes SunSpec Modbus data points and information models for all types of DER devices including inverters, batteries, meters, and trackers. Published in Microsoft Excel format. Download Specification Provide Your Contact Info to Download this File. Thank You! I...

SunSpec Information Model Specification

Provides an overview of SunSpec information models associated with the physical devices comprising a photovoltaic system. This document provides communication interface developers with detailed information needed to define SunSpec-compliant device interfaces. Download...

SunSpec Model Definition XML (SMDX)

Revision: APPROVED Date: February 15, 2018 Link to the SunSpec Model Definition XML (SMDX) repository on Github. Go to Github Provide Your Contact Info to Download this File. Thank You! I give permission to SunSpec Alliance to email me regarding specification updates...

SunSpec Energy Storage Model Description

TEST status.  Describes the SunSpec Modbus information models for lithium ion, flow, and lead acid batteries. Download Specification Provide Your Contact Info to Download this File. Thank You! I give permission to SunSpec Alliance to email me regarding specification...

SunSpec Modbus Vendor Extensions

The SunSpec Modbus interface allows for vendor defined functionality. The following Model IDs have been reserved by the indicated manufacturer to be used for vendor extensions: – Starting ID Ending ID Vendor Description 64001 64009 Veris 64001: Veris status and...

CA Rule 21 Implementation Guide for SunSpec Modbus

TEST Status. Describes the SunSpec Modbus information models required to develop a CA Rule 21 Phase 1 and UL 1741 SA compliant communication interface. Download Specification Provide Your Contact Info to Download this File. Thank You! I give permission to SunSpec...