Handling Data Time Lags and Accuracy

Data Time Lags

Some emissions data providers may experience delays in publishing MER data due to the time required for data collection, processing, and validation. These time lags can range from a few days to several months, depending on the grid and data provider.

Strategies for Managing Time Lags

• Delayed PEC Issuance: Wait until the MER data is available before finalizing induced emissions calculations and issuing PECs.

• Interim Estimates: Use preliminary MER data where available, with the understanding that adjustments may be necessary once final data is released.

• Communication with Stakeholders: Inform relevant parties about potential delays in PEC issuance due to data availability constraints.

Ensuring Data Accuracy

Selection of Reliable Data Providers

• Compliance with PECA Guidelines: Choose emissions data providers that adhere to the criteria outlined in the PECA guidelines.

• Data Validation Processes: Ensure that providers have robust methodologies for data collection and validation.

Verification of MER Data

• Cross-Referencing: Compare MER data from multiple sources, if possible, to identify discrepancies.

• Historical Data Analysis: Analyze historical MER trends to assess the reasonableness of current data.

Documentation of Data Sources and Methodologies

• Detailed Records: Maintain comprehensive documentation of the emissions data sources, including:

  • Provider details.

  • Data acquisition dates.

  • Methodologies used by the provider to calculate MER.

• Transparency: Provide this documentation as part of the project impact report submitted to the PEC Registry.

Example of Handling Data Time Lags

Suppose an energy storage project in the ERCOT grid experiences a 60-day delay in MER data publication:

• Impact on PEC Issuance: PECs for the affected period cannot be issued until the accurate MER data is available.

• Operational Adjustments:

  • Plan for the delay in financial and operational projections.

  • Communicate with corporate buyers regarding the expected timeline.

• Data Update: Once the MER data is published, proceed with induced emissions calculations and PEC issuance promptly.