What compliance credits are
A renewable energy certificate represents one megawatt-hour of electricity that came from a renewable source and was delivered to the grid. The same instrument exists in different jurisdictions under different names. RECs in the United States. GOs (Guarantees of Origin) in the European Union. SRECs for solar-specific generation in U.S. states that operate Renewable Portfolio Standard markets. STCs (Small-scale Technology Certificates) for residential and small commercial systems in Australia. The unit is always the same: 1 MWh of verified renewable generation, tracked from the meter that produced it to the registry account that retires it.
Compliance credits are the asset class that makes corporate Scope 2 reporting and utility RPS compliance possible. When a corporation reports 100% renewable electricity, they are not actually receiving electrons from a wind farm; they are matching their grid consumption against retired RECs. When a utility meets a 30% renewable mandate, they are retiring SRECs or RECs against their delivered megawatt-hours. The certificate is the asset; the underlying electricity is just the thing that made the certificate eligible to exist.
The market is enormous. Compliance REC markets in the U.S. (RPS-driven) trade tens of millions of certificates annually. The EU GO scheme covers nearly all renewable generation across 28 countries. The voluntary corporate REC market, driven by RE100 commitments and SBTi-aligned Scope 2 reporting, has grown into one of the largest environmental commodity markets in the world.
Why today's REC market drifts
The current REC infrastructure was designed for a world where electric utilities issued certificates against their own meters and traded them between themselves. It was never designed for the realities of 2026: global supply chains claiming Scope 2 attribution across borders, distributed rooftop generation that bypasses utility meters entirely, and corporate ESG reports that need to be audit-grade rather than directional.
Four structural failure modes show up in nearly every REC audit.
Meter-to-registry latency. A solar farm in Texas reads its meter every 15 minutes. That data lands in an aggregator's database, gets exported to the utility, gets reconciled at the ISO, gets uploaded to ERCOT, and eventually appears in the registry days or weeks later. Every step in that chain is an opportunity for the number to change.
Vintage washing. RECs have a vintage (the year of generation) but registries don't always enforce strict matching between the corporate buyer's claim year and the certificate's vintage. A 2023 REC retired in 2026 still discharges a 2026 Scope 2 obligation in some jurisdictions. The corporate report cites ‘100% renewable in 2026’ against generation that physically happened in 2023.
Self-attestation. Many smaller registries accept producer-signed generation reports without third-party verification. The producer reports their own kWh, the registry accepts it, certificates are issued. There is no independent auditor in the chain.
Cross-registry leakage. A REC issued in M-RETS (the Midwest registry) can sometimes be sold into a buyer who is also claiming the same physical electricity via a different attribution mechanism, such as a green tariff or a utility-issued attestation. The two systems don't talk to each other; the same MWh appears on two ledgers.
For a deeper treatment of the double-count problem and how the One-Claim ledger eliminates it, see Energy: double count.
How EDMA mints a REC
EDMA replaces the multi-hop registry pipeline with a single verifiable flow from meter to certificate. Every stage carries a defined evidence schema, a named actor, and a verifiable on-chain output. Every signature is anchored to Ethereum.
The certificate is the token. There is no separate registry entry the certificate is a pointer to. The metadata that traditional REC registries scatter across multiple database fields and PDF certificates is encoded in the token itself, with the underlying evidence hash always one click away.
The seven-stage flow below shows the full path from a meter reading to a retired REC. Each stage can be inspected independently. The PoV Gate (stage S04) reverts on any mismatch; the One-Claim Ledger (also at S04) reserves the (device_id + generation window) key so the same MWh cannot be claimed twice. For the architecture this flow runs on, see Proof-of-Verification, One-Claim Ledger, and Attestor Registry.
Anatomy of an EDMA REC
An EDMA-issued compliance credit is a token. The metadata that traditional registries scatter across multiple database fields and PDF certificates is encoded in the token itself.
Every certificate carries: project_id (which solar farm, wind farm, hydro plant), generation_window (the precise start and end timestamps), fuel_type (solar, wind, hydro, geothermal, biomass), region (the ISO/RTO or grid zone), vintage (the year of generation), asset_id (the specific meter or unit identifier), and evidence_hash (the canonical JSON dossier the attestors signed).
Certificates are non-transferable in the public secondary sense until they are retired. An EDMA REC can be held, can be financed against, or can be retired by the holder. Retirement burns the token and emits an ESG receipt: a signed, on-chain artefact that the holder can attach to a Scope 2 report, an RPS compliance filing, or a corporate sustainability disclosure.
The retirement event is the moment the claim attaches. After retirement, the certificate cannot be reused, cannot be resold, and cannot be retired again. The receipt is permanent and verifiable by any auditor without going through EDMA at all; they can read the on-chain record directly.
Registry interoperability
EDMA does not try to replace existing registries. It runs alongside them.
Bridge attestations let a certificate issued on EDMA be exported to a traditional registry (PJM-GATS, NEPOOL-GIS, M-RETS, the EU AIB GO hub, the Australian REC Registry), where it occupies the slot of a normal certificate for jurisdictions that mandate registration in those systems. Equally, a certificate retired in a traditional registry can be linked back to an EDMA evidence dossier as proof of underlying generation.
What changes is the audit trail. A REC that flows through EDMA carries its evidence with it. A corporate buyer or a regulator can click through from the registry entry to the on-chain proof page and see the meter readings, the attestor signatures, the timestamps, and the One-Claim record. Audits become review, not reconstruction.
This matters for emerging regulatory pressure. The European Sustainability Reporting Standards (ESRS) require auditable evidence behind every renewable energy claim. The SEC's pending Climate Disclosure rules push U.S. issuers toward verifiable Scope 2 attribution. The voluntary frameworks (SBTi, RE100, CDP) are increasingly demanding proof of additionality and temporal matching. The traditional registry workflow cannot produce that evidence at scale. The EDMA flow produces it as a by-product of normal operation.
What corporates get
The corporate REC buyer's life today: source certificates from a broker, receive a PDF, manually enter the lot numbers into the ESG reporting tool, run a CSV reconciliation against the registry, hand the package to the external assurance provider, and hope the auditor accepts it.
The corporate REC buyer's life on EDMA: receive the token on retirement, the ESG reporting tool reads the metadata directly via API, the assurance provider verifies the on-chain proof page, the disclosure filing carries the evidence hash. Every claim points to a meter reading. Every meter reading points to an attested time window. Every attestation points to a named auditor.
The intersection with the Trade rail is significant. A corporate buying physical goods through EDMA's Global Trade Marketplace can attach REC retirements to specific orders, making Scope 3 emissions attribution as auditable as the order itself. The 24/7 carbon-free energy matching introduced in R2 Granular & Flex uses the same certificate type but with hourly temporal matching, the next standard for cloud and data-center buyers.
What producers get
Most renewable energy producers do not see REC revenue, because the unit (1 MWh) is too coarse for them. A rooftop solar system that produces 7 MWh annually issues seven RECs, after the multi-hand registry chain, after broker fees, after admin costs. The economic case usually fails.
EDMA changes the granularity. The ETT unit is 10 kWh, which is 100 times finer than the traditional REC. A producer can monetize the moment they cross any 10 kWh threshold. Small farms, residential generation, community solar, and small commercial systems all become economically viable producers.
The economics also change because of disintermediation. The traditional REC sale flows through aggregators, brokers, registries, and certifying bodies. Each layer takes a margin. On EDMA, the producer mints directly; the certificate is the token; the buyer retires the token. The protocol takes a single fee (4% per token settlement, half of which burns in $EDM), and the rest reaches the producer.
Settlement is real-time. A mint event is paid out the same day in EDSD (EDMA's settlement stablecoin) or routed to a bank rail. No waiting for the registry to settle, no quarterly batches, no broker invoicing cycles.
Where it stands
R1 is built on the existing protocol infrastructure that already handles Trade settlement: the PoV Gate, the One-Claim Ledger, and the Attestor Registry. No new protocol layer is required for R1 to go live; only role onboarding and registry bridges.
Attestor onboarding. The AUDITOR role accepts independent renewable energy certification firms that meet the protocol's onboarding criteria. The role is open; the dominant global certifiers (Bureau Veritas, SGS, DNV, TÜV SÜD, and similar firms) are the natural candidates but are not formal partners until the relevant agreements are in place.
Initial corridors. The protocol prioritises jurisdictions with mature legal frameworks for renewable energy attribute trading: the U.S. RPS markets and the EU GO scheme. Specific state-level or country-level launch sequencing depends on the registry bridge work below.
Registry bridges. Bridge attestation contracts are designed for the major compliance registries (PJM-GATS, NEPOOL-GIS, M-RETS, the EU AIB GO hub, the Australian REC Registry). The initial direction is one-way export, so an EDMA-minted certificate can occupy the slot of a traditional certificate in jurisdictions that require registration there. Two-way interop is a later phase.
For the protocol-level architecture this route depends on, see Proof-of-Verification, One-Claim Ledger, Attestor Registry, and Energy: double count.
