What is the maximum overall inaccuracy allowed for data exchange in PJM operations?

The maximum overall inaccuracy allowed for data exchange in PJM operations is 2%. This standard is in place to ensure that the data used for system reliability and operational decisions is sufficiently accurate. Maintaining a limit of 2% helps mitigate risks associated with unclear or erroneous data, which could potentially lead to unsafe operating conditions or inefficiencies in resource management.

In PJM's context, ensuring data accuracy is critical because the operational efficiency of the electricity market directly impacts system reliability, generating unit performance, and overall market operations. By defining a threshold of 2% for overall inaccuracy, PJM provides a balance that enables effective monitoring and control while also allowing for some margin for inevitable data discrepancies that can occur due to various factors, such as communication delays or minor sensor errors.

Understanding this limit is essential for operators and dispatchers as they work to maintain system integrity and ensure all market participants can rely on the data being exchanged for operational decisions.