MESA Standards

MESA is currently developing two specifications: MESA-DER and MESA-Device/SunSpec Energy Storage Model. MESA-DER addresses communication between a utility’s control system and energy storage systems (ESS). MESA-Device specifies standardized communications between components within the ESS.

About MESA Standards


The MESA-DER specification (update released December 2018) defines the communication requirements for utility-scale energy storage systems (ESS), including ESS configuration management, ESS operational states, and a profile of the IEEE 1815 (DNP3) standard based on the IEC 61850-7-420 information model for advanced DER functions. These advanced DER include all of the functions defined in IEEE 1547:2018, California’s Utility DER Electric Rule 21 Interconnection, and the European ENTSO-E DER interconnection requirements (2016), as well as additional functions of particular interest to ESS. For the detailed DNP3 points list and descriptions, this MESA-DER Specification references the DNP3 Application Note of 2018, which is available to MESA members and to DNP3 User Group members.

The purpose of this MESA-DER specification is to support the use of communication standards, promote interoperability, and minimize the amount of non-recurring engineering that is required to integrate ESS into utility operations using DNP3.



MESA-Device Specifications/SunSpec Energy Storage Model consists of three separate specifications for inverters, meters, and storage which address how energy storage components within an energy storage system communicate internally and with other operational components. MESA-Device Specifications are built on the Modbus protocol.

The Energy Storage Workgroup, run by SunSpec Alliance with contributions from MESA members, worked through 2015 and 2016 to produce an updated draft specification for MESA-Device/SunSpec Energy Storage Specification (Draft 4). The specification was released in DRAFT status for feedback and testing in July 2016 and updated October 2017.

Download MESA Specifications


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