The mission of the SunSpec Communication Signal for Rapid Shutdown (SunSpec RSD) Workgroup is to define a simple, open, multi-vendor, multi-device communication interoperability specification to support NEC 2017 and NEC 2020 690.12 rapid shutdown requirements. SunSpec RSD receivers can be applied in in solar arrays as single-module, multi-module, and string-level devices and SunSpec RSD transmitters can be applied adjacent to or embedded in inverters or power conversion devices.

Group Leaders

Project Leader(s):

Tom Tansy

SunSpec Moderator:

Tom Tansy

Topics Covered

This work group focuses on the following topics:

  • SunSpec Communication Signal for Rapid Shutdown


You must be a Contributing Member of the SunSpec Alliance to participate in this Work Group. Click here to see if your company is already a member or click here to join the Alliance. Contact membership@sunspec.org to enroll today!

Meeting Scheduled

The SunSpec Rapid Shutdown Technical Work Group meets on the first Tuesday of each month. See the event calendar for the next meeting. Go to the member portal for meeting coordinates.


The SunSpec Rapid Shutdown certification mark ensures a product’s compliance with NEC 2017 requirements for module-level rapid shutdown as well as interoperability with other SunSpec RSD certified devices in a PV system.



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