The Granular Registry
Storage Methodology
WhitepaperGeneration MethodologyStorage MethodologyUser GuideGovernance
Storage Methodology
WhitepaperGeneration MethodologyStorage MethodologyUser GuideGovernance
  • PROCESS
    • Storage Charge Records (SCRs)
    • Storage Charge Records (SCRs) and Storage Discharge Records (SDRs)
    • Storage Discharge Granular Certificate (SD-GC) Issuance
  • Time-Shifting
    • “Virtual Hybrid” (stand-alone storage)
  • CONTRACT CONFIGURATIONS
    • Summary of Contract Structures
    • Hybrid Project (co-located CFE generation & storage)
  • EXAMPLE TRANSACTIONS
    • Time Shifting
  • APPENDIX
    • FAQ
      • How is additionality determined?
      • What are the parallels to Green Hydrogen Electrolysis?
      • What if CFE does not align with optimal battery dispatch?
      • How does the PEC registry deal with the time lag of MER data?
      • What if the storage asset charges during zero MER hours?
      • How are PECs issued for energy storage different than carbon offsets?
      • Are PECs and carbon offsets mutually exclusive?
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  1. APPENDIX
  2. FAQ

How is additionality determined?

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Last updated 6 months ago

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No additionality or other financial tests are required for a storage asset to be eligible for PECs. Additionality is not required in inventory accounting in the same way as consequential accounting used by carbon offsets. This difference is explained well in the .

The issued storage PECs will have traceability to the additionality indicators of the PECs retired to neutralize charging activity.

EPA’s guidance comparing RECs and carbon offsets