TCC Data & Information

Transmission Congestion Contracts (TCCs) enable energy buyers and sellers to hedge transmission price fluctuations. A TCC holder has the right to collect or the obligation to pay congestion rents in the Day-Ahead Market for energy associated with transmission between specified points of injection and withdrawal. The NYISO offers a number of TCC products to meet the needs to NYCA Transmission Customers, and also conducts periodic auctions where TCCs may be bought and sold. The auctions maximize the value of TCC awards, based on the bids and transmission line and contingency constraints. An Optimal Power Flow program is used to determine the TCCs awarded in an auction.

TCC Market Login

Select the link below to login to the TCC Market Application. Please Note: You will need a digital certificate to access this application.

TCC Auction Data:

TCC model data may be requested by completing a CEII request form and NDA at the link below:
CEII Request Form


Contact Customer Support

phone: (518) 356-6060*

*All calls to the Customer Relations Help Desk are recored for quality assurance