This section covers important information relevant to registration, lodging collateral, bidding, paying invoices and auction rules. You'll also find some additional helpful resources in this section.



Q: How long does it take to fully register to be an Auction Participant?

A: The registration process for ETS Auctions has two stages that require our review. If there is no issue with reviewing and validating your information, registration can be done in 1 business day.

Q: Do all users need to complete an identity check?

A: Only the Auction Account Holder will need to complete the registration process and provide the Statutory Declaration. However, all invited users will need to complete an identity check with either a New Zealand driver licence or a passport.

Q: Can I participate in ETS Auctions if I am not currently in New Zealand?

A: Yes, you can participate in auctions as long as you have a New Zealand Emissions Trading Register account and have completed the registration process for ETS auctions. ETS Auctions are operated fully online.

Q: How can I update my Participant details?

A: You can update your Participant details anytime. If you need to update your bank account details, please contact us at or (+64) 4 470 9768.

If you need to update your information (excluding the bank account details), please contact the NZ ETS Register first at to update your Registry account information. Afterwards, contact us at or (+64) 4 470 9768 to update your information accordingly.

Q: How can I update the Auction Account Holder?

A: To update the Auction Account Holder, please update your participant account details in EPA Register with the new Auction Account Holder and invite the new user as an admin. Once completed, please contact us at or (+64) 4 470 9768 with the new Auction Account Holder’s EPA invite code and a new signed statutory declaration. The Auction Operator will then be able to update your Auction Account Holder.

Q: Can I participate in an auction without a Registry account?

A: No, you must have an account with the New Zealand Emissions Trading Register to participate in ETS Auctions.

Collateral and Payment

Q: Can I request to have my collateral returned before an auction starts if I don’t want to participate anymore?

A: Yes, however no collateral transactions are allowed from five days before the auction through to four days after. If you are outside this restricted period, please contact us at or (+64) 4 470 9768.

Q: Can I use an international bank account?

A: Yes, however all payments must be made in New Zealand dollars. Funding collateral and any collateral return must be made from the bank account used during the registration process.

Q: Can I pay my invoice by making several transfers to the ETS Auction Collateral Account?

A: One or multiple transfers to the ETS Auction Settlement Account would be acceptable payment. Note, all the deposits need to be received before 12:00 NZ time four business days after the auction.

Q: Will my money be returned if I overpay the invoice?

A: Overpayments will be returned five business days after the auction.

Q: Who is the counter party for the ETS auction?

A: The Ministry for the Environment

Bidding and Auction results

Q: What browsers are supported for bidding?

A: The latest two versions of Google Chrome, Microsoft Edge, Mozilla Firefox, and Safari (for Mac OS) are the supported browsers. Please note, Internet Explorer is not supported by ETS Auctions. ETS Auctions work best on a laptop or desktop, it is not optimised for mobile phones or tablet devices.

Q: Can I appoint multiple bidders to bid on my behalf?

A: Yes, by inviting new users as bidders you can appoint multiple bidders to bid on your behalf. Learn more about inviting users

Q: What is the minimum bid that I can make?

A: The minimum bid size is 500 NZUs (New Zealand Units) or 5 lots (1 lot = 100 NZUs). You can only place bids that are in 100 NZU or 1 lot increments. For example, a bid of 500 NZUs or 5 lots is acceptable. However, a bid of 550 NZUs or 5.5 lots is not acceptable.

Q: How and when can I know my bidding results?

A: You will receive an email notification with the auction results on the auction day. You can view your auction results in further detail on your Participant page under ‘Past auctions’.

Q: When will I receive my NZUs?

A: After settlement (12pm, four business days after the auction), the Auction Operator will provide the EPA Register with NZU transfer instructions for all fully paid invoices. These transfer instructions will be validated by the Ministry for the Environment before the EPA Register can transfer the units.

If you have not received your NZUs 7 business days after the auction, please contact the Auction Operator at or (+64) 4 470 9768 and the EPA Register at