Disturbance data is no longer optional. It’s foundational.
As inverter-based resources (IBRs) continue to reshape the grid, one theme is coming through clearly in conversations across the industry: visibility into dynamic performance is the new baseline for reliability.
That’s exactly what NERC PRC-028 is designed to address.
Originally developed in response to real-world disturbance events that exposed critical data gaps, PRC-028 introduces a new level of rigor around how inverter-based resources are monitored, recorded, and analyzed during system disturbances.
At its core, PRC-028 ensures that operators, planners, and reliability coordinators have access to high-resolution, time-synchronized data—so they can actually understand what happened when the grid is stressed.
Because in today’s grid, it’s not enough to assume performance.
You have to prove it.
What PRC-028 Really Means (Beyond the Standard)
If you’ve spent time with the requirements, you already know this isn’t just another documentation exercise.
PRC-028 requires:
- Sequence of Event Recording (SER) for breakers and inverter behavior
- Fault Recording (FR) to capture oscillography during disturbances
- Dynamic Disturbance Recording (DDR) at high sampling rates
- Precise time synchronization across all data sources
- Rapid data retrieval and reporting for post-event analysis
Together, these requirements create a comprehensive picture of how inverter-based resources behave during faults, voltage excursions, and frequency events.
Industry experts are increasingly framing PRC-028 not as a compliance burden—but as a necessary evolution of grid observability.
Because without this data, root cause analysis becomes guesswork.
And guesswork is no longer acceptable.
Where Organizations Are Struggling
In our conversations with operators and compliance teams, a few consistent challenges are emerging:
- Fragmented data sources across relays, inverters, and plant systems
- Manual validation of recording coverage and settings
- Uncertainty around data completeness (especially for legacy assets)
- Audit risk tied to missing, misaligned, or inaccessible data
PRC-028 exposes a fundamental gap:
Most organizations don’t have a continuous way to verify that required disturbance data is being captured—until they need it.
And by then, it’s too late.
Introducing Automated PRC-028 Checks from data phleet
Today, we’re excited to introduce data phleet’s automated PRC-028 compliance module—designed to regularly validate that your disturbance monitoring is complete, aligned, and audit-ready.
This isn’t a task tracker.
It’s not a document repository.
It’s automation that actually performs the compliance check.
With the PRC-028 module, you can:
- Regularly verify SER, FR, and DDR coverage across applicable assets
- Validate data availability, synchronization, and configuration
- Identify gaps in recording, retention, and retrieval readiness
- Detect issues early—before they become audit findings or event blind spots
In short, it helps ensure that when a disturbance happens, you have the data you need—because you’ve already validated that you would.
A Broader Shift Toward Continuous Compliance
PRC-028 is part of a larger industry shift.
As the grid becomes more dynamic and inverter-driven, compliance is moving from:
Periodic validation → Continuous assurance
From:
“We checked it last quarter” → “We know it’s correct right now.”
That shift is what data phleet is built for.
Final Thought
PRC-028 isn’t just about capturing data.
It’s about earning confidence in how your assets behave when the grid is under stress.
And in a world of increasing complexity, that confidence is everything.
If PRC-028 is on your roadmap (or already keeping you up at night), we’d be glad to discuss how data phleet can help.