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        Facilitating competitive markets and reliable wholesale electricity delivery in New England

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      • Markets and Operations
      • Transmission Operations and Services

      OASIS Materials

      In this section

      • Transmission Operations and Services
      • Transmission Service Types
      • Transmission Outage Scheduling
      • OASIS Materials
      • Operational Transmission Limits

      Related Links

      • Transmission Service Types and Applications
      • External Transmission Customer Contact Form
      • NAESB Website
      • Electric Industry Registry (EIR) Website

      Participation in the Open Access Same-Time Information Transmission System (OASIS) is required for external transactions—transactions by customers that wheel energy through, import energy into, or export energy out of the New England Balancing Authority Area via the Real-Time Energy Market.

      • Learn more about OASIS and how to request access.
      • Go to the OASIS website.
      • Access posting requirements and other related documents below.

      For terms, conditions, and other details, see:

      • The ISO Tariff (Section II: Open Access Transmission Tariff)
      • Federal Energy Regulatory Commission (FERC) Order No. 889: Open Access Same-Time Information System and Standards of Conduct

      Related Websites:

      • Visit the North American Energy Standards Board (NAESB) website—an industry forum for the development and promotion of standards to create a seamless marketplace for wholesale and retail natural gas and electricity.
      • The Electric Industry Registry (EIR) website (requires registration and log in) is the central repository for information required to support commercial, scheduling, and transmission management operations in North America. The EIR is provided by the Open Access Technology International, Inc. (OATI) webRegistry system, which allows industry participants to register and maintain their company information for use in industry business operations and transmission and scheduling procedures, such as submitting external transactions with ISO New England. The EIR/webRegistry replaced the North American Reliability Corporation’s Transmission Services Information Network (TSIN) registry in 2012.

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