SunSpec Specifications and Information models

SunSpec publishes free, open interoperability specifications and information models that software developers, hardware manufacturers, and integrators use to achieve plug-and-play interoperability between Distributed Energy Resource (DER) components and smart grid applications. All SunSpec specifications are free to download and use. SunSpec also supports international standard communication protocols that adhere to open principles.

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Available Specifications

Specification packets are listed by date, most recent first.

SunSpec Information Model Specification

Revision: 1.9 Date: April 14, 2015 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...

SunSpec Inverter Model Descriptions

Revision: 1.5 Date: April 6, 2015 Describes the SunSpec Modbus information models for inverter monitoring and control. Note: some newer SunSpec models are not documented here.

Best Practices in PV System Installation

Revision: 1.0 Date: March 2015The following Photovoltaics Installation Best Practices Guide is one of several work products developed by the Solar Access to Public Capital (SAPC) working group, which works to open capital market investment. SAPC membership includes...

PV System Performance Assessment

Revision: 2.0 Date: June 2014Metrics and methods to assess performance of existing systems to aid bankability of PV asset class Determining and evaluating system performance based on actual weather and actual system characteristics is [et_bloom_locked...