Solar Fleet — NERC PRC Protection System Program

A standardized NERC PRC protection testing and documentation program across eight solar interconnection substations for a national developer.

Solar interconnection substation at night, bus work and control cabinets lit by floodlights
Client
National solar developer (name withheld)
Status
Ongoing
Project type
NERC PRC compliance testing & protection system checkout
Voltage class
115–230 kV interconnection, 34.5 kV collection

Project overview

We’re running a NERC PRC compliance program across a fleet of eight solar interconnection substations, covering the six-year PRC-005 protection system maintenance cycle along with PRC-019, PRC-024, PRC-025, and PRC-026 requirements.

At each site we test the protection system — relays, logic, and trip paths — pull relay files, review settings against the standards, and assemble the documentation package an audit calls for. Using one standardized procedure across the fleet keeps every site consistent and every visit efficient.

Highlights

  • Fleet-scale program with the same procedure at every site
  • Working knowledge of what PRC audits actually ask for
  • Familiarity with solar interconnection substation configurations
  • Documentation built for the auditor, not just the file cabinet

Working on something similar?

We’re glad to talk through a project at any stage — including the ones that are still just a one-line on a whiteboard.