Documentation

REC Issuance

Issue Renewable Energy Certificates backed by on-chain generation proofs. Every certificate traces back to specific readings from specific projects.

Traditional RECs

A Renewable Energy Certificate represents proof that one megawatt-hour of electricity was generated from a renewable source. Traditionally, RECs are issued by regional registries based on meter data submitted by project operators.

The process is slow (weeks to months), opaque (data is not publicly verifiable), and vulnerable to double-counting across registries.

On-Chain RECs with EnergyAS

EnergyAS provides the verified generation data that REC issuance requires. Each attestation records:

  • The specific project (with on-chain identity and metadata)
  • The energy type (solar, wind, hydro, etc.)
  • The exact time period and readings in watt-hours
  • The collection method (IoT, manual, estimated)
  • Optional IPFS metadata linking to supporting evidence

A REC issuer can verify this data on-chain before issuing certificates. The full chain of evidence — from meter reading to attestation to certificate — is public and auditable.

Anti-Double-Counting

EnergyAS enforces period uniqueness at the protocol level. The same time window cannot be attested twice for the same project. This means the same generation data cannot be used to back multiple certificates — the on-chain record is the single source of truth.

Note

If an attestation is revoked and re-submitted (for correction), the revocation is visible on-chain. Certificate issuers can check the full attestation lifecycle, including any corrections.