Find the right program
ERCs and discrete credits are distinct instruments. Geographic and use requirements depend on the program and receiving regulator.
THE NATIONAL EMISSION CREDIT DIRECTORY
A wider view.
A clearer path
to emission credits.
Explore public banked-credit records across the United States. Start with your state, see the source, and take the next step.
State-specific records. Original units. Transparent sources.
NATIONAL COVERAGE RESEARCH EDITION
Records loaded Coverage being researched
One place to research. Each program keeps its own rules.
50 + DCJurisdictions in the directory
…States with imported records
…Certificate-pollutant / register rows
Source-ledPublished records, not seller offers
01 / FIND YOUR MARKET
Start with a state.
Explore states with data now, or check the research status of any other state. Coverage is expanding.
No states match your search.
02 / PUBLIC BANKED CREDITS
Research the register.
Banked records are a starting point. A record does not establish seller willingness, current pricing or eligibility for your project.
| Holder / source reference | State / program | Pollutant | Recorded amount | Location | Source status | Record details |
|---|
Amounts retain the source's units. No national tonnage total is shown because programs, pollutants, seasons and time bases differ. Older publication dates do not by themselves mean a credit has expired.
BANKED ≠ OFFERED FOR SALE
Research with context.
Ask with confidence.
Go back to the source
Every imported row links to its source. Review publication dates, restrictions and the regulator's current record before relying on a balance.
Confirm the commercial terms
Availability, price, minimum purchases and transfer timing require confirmation with the holder or representative.
03 / TAKE THE NEXT STEP
What are you
looking for?
Prepare a buyer request or a seller listing inquiry. Include what you know. Leave the rest for follow-up.
This version prepares an email for your review. It does not submit a listing, send a message automatically or appoint a broker.
Looking for California listings? Visit California ERC Exchange ↗04 / COVERAGE & SOURCES
Know what is covered.
Nationwide scope, with explicit limits. A state listed here is not a claim that every credit in that state is loaded.
Research is ongoing. Imported snapshots include California and additional states. Additional-state datasets have source provenance and integrity checks. Verification methods differ: Texas is an imported agency export without an independent total check. Individual records show their review status. Ambiguous rows are withheld. Partial imports, including New Hampshire, are identified in their state profiles. Unloaded jurisdictions remain visible, with source links where identified. “Research pending” does not mean no program or no credits.
How the records are maintained
This site uses a reviewed export from the shared ERC research collection. Publication dates and retrieval dates are retained separately. It is a snapshot, not a live connection to government databases. Updates require source review and a new import.
Past printed expiry, zero balance, superseded, committed, pending, duplicate and potential entries are excluded from default results but remain available in the historical view. Original status, intended use and notes are shown in record details. Internal references identify a row in this snapshot and are not government certificate numbers.
RESEARCH GUIDE
Understand the record.
Use the original program, pollutant, geography, units and dates when comparing credits.
What does ERC mean here?
Emission reduction credits for air permitting. This site focuses on public air-credit registers. It does not list employee retention tax credits or combine carbon offsets with these records.
ERCs, DERCs and allowances
Texas distinguishes permanent-reduction ERCs from temporary-reduction DERCs and separate allowance programs. Keep each instrument in its own program when searching and comparing.
TCEQ program explanations ↗Units and seasons
Tons per year describe a rate; tons describe a mass. Ozone and non-ozone seasons remain separate. “Not printed” means the source did not state a unit. We do not infer one or calculate a national tonnage total.
Banked versus available to buy
A public balance does not confirm an asking price, seller authorization, current ownership or willingness to sell. Contact the holder or representative and confirm the current regulator record before proceeding.
TCEQ trading exchange notices ↗What information should a buyer provide?
Receiving facility location and air district, pollutant, intended program, quantity and units, permit or project deadline, and any requirements provided by the permitting authority. Ask for certificate or account identifiers, current balance, restrictions, expiry or discount treatment, transfer requirements and a dated quote.
What information should a seller provide?
Holder or authorized representative, regulator and program, certificate or account identifiers, pollutant, quantity and units, source documents, restrictions, asking price and minimum quantity. Public register inclusion alone does not create a seller listing.
Where can I read about permitting and offsets?
EPA guidance on NNSR emission reduction credits ↗. Use the relevant state or local agency's current requirements for your project.
Why are some states missing searchable records?
Some authorities publish PDFs or agency dashboards; others publish program rules without an accessible inventory. A missing import is not evidence of an empty bank. Massachusetts is linked with an aggregate summary; its holder records are not imported. New Hampshire has a clearly labeled partial import and a link to the original registry. Ohio report access remains unresolved. Local-authority coverage is still being researched.
Are these current prices or completed sales?
The searchable register is a source snapshot, not a live quote service. Some California records retain a district-recorded historical purchase-price field, clearly labeled in record details. These figures do not establish a current asking price. Agency transfer reports are linked where available and must be evaluated separately from current offers.
TRANSACTION EVIDENCE
What have credits traded for?
Research reported sales and transfers from California and Texas. Compare historical prices within the same market, pollutant, program and units.
Explore Sales & Prices ↗BUILDING A BROADER PICTURE