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Documents
NAESB Home Page

  • NAESB Home Page

  • Standards of Conduct
    Emergency Circumstances Deviations.
    Marketing and Energy Affiliates List.
    Shared Facilities List.
    Job Descriptions.
    Potential Merger Partners.
    Transfers.
    Information Disclosures.
    Voluntary Consent.
    Chief Compliance Officer.
    Written Procedures for Implementation.
    Performance Metrics
    Transmission Study Metrics
    Transmission Study Metrics
    Transmission Service Request Metrics
    Schedule 20A
    Schedule 21-UI
    Business Practices, Waivers and Exemptions
    Schedule 20A
    Business Pracitces Schedule 20A.
    Business Practice Amendments
    eTag Business Practice
    Waivers & Exemptions
    Conditional Firm Service
    Energy & Generation Imbalances
    Network Resource Designation
    Planning Redispatch...
    Transmission Studies
    Waivers & Exemptions of NAESB Standards
    Schedule 21
    Business Pracitces Schedule 21.
    Business Practice Amendments
    Waivers & Exemptions
    Conditional Firm Service
    Energy & Generation Imbalance
    Network Resource Designation
    Planning Redispatch
    Waivers & Exemptions of NAESB Standards.
    ATC Information
    Schedule 20A
    Current ATC Implementation Document - ATCID.
    Current CBM Implementation Document - CBMID
    Current TRM Implementation Document TRMID
    ATC Methodology Contact
  • Attachment C Methodology to Assess Available Transfer Capability.

  • Current Load Forecast Descriptive Statement

  • Postback Methodology.
  • Load Forecast

  • Attachment C Methodology to Assess Available Transfer Capability

  • Mathematic Algorithms for the Calculation of ATC

  • Total Transfer Capability (TTC) Data

  • Conditional Curtailment Option
    Schedule 21-UI
    Current ATC Implementation Document - ATCID
    Current CBM Implementation Document - CBMID
    Current TRM Implementation Document – TRMID
    ATC Methodology Contact
  • Attachment A Methodology to Assess Available Transfer Capability

  • Current Load Forecast Description Statement
    Postback Methodology
    Mathematic Algorithms for the Calculation of ATC
    TTC/ATC/TRM/CBM values for UI non-PTF Transmission Path
    Zero ATC Narrative
    ATC Change Narrative
    Grandfathered Agreements
    Conditional Curtailment Option
    Company Website
  • Company Website

  • BP-20A_4.11.11
    BP-20A_4.01.11
    Tariff
  • ISO New England Open Access Transmission Tariff.

  • Registration Procedures.

  • Schedule 20A - Common

  • Schedule 20-UI.

  • Schedule 21 - Common.

  • Schedule 21-UI

  • FERC Order Accepting Compliance Filing
    FERC Order Accepting Compliance Filing, Subject to Further Modification
    FERC Order Accepting in Part Compliance Filing
    FERC Order Accepting in Part Compliance Filing and Rejecting in Part
    Rates
    Rates
    OASIS and Transmission Information
    OASIS Timing Requirements
    OASIS Timing Requirements
    Transmission Maintenance (Short Term Outage)
  • Transmission Maintenance (Short Term Outage)

  • Studies
  • Studies

  • Generator Interconnection Requests
  • Generator Interconnection Requests

  • OASIS Notices
  • Discretion

  • Personnel

  • Use Rights Clarification
    Use Rights WebTrans
    Use Rights over the Phase I/II HVDC-TF
    RFP / RFI Response
    Intention to respond to NESCOE RFI.



    Welcome to UICO

    UI’s transmission business unit, established in 2006, achieves growth by identifying, pursuing and capturing transmission opportunities to enhance reliability and market efficiency and deploying infrastructure solutions that provide stakeholder value.

    The 345,000 volt (345 kV) Transmission System

    The highest level of transmission voltage currently within the UI system is 345,000 volts (345 kV). This level of the transmission system consists of approximately 11 miles each of overhead high voltage lines and underground cable systems, totaling 22 miles of 345 kV transmission. The system is interconnected to the New England 345 kV electric grid and our neighboring utilities.

    The 115,000 volt (115 kV) Transmission System

    The next highest transmission level in the UI system is 115,000 volts (115 kV) consisting of approximately 93 miles of overhead high voltage lines and approximately 17 miles of underground cable systems. A majority of the 115 kV system overhead high voltage lines are within the Connecticut Department of Transportation railroad right of way between New Haven and Fairfield, while the underground system is typically within metropolitan areas of New Haven and Bridgeport. The 115 kV transmission system provides power to several transmission (115 kV) to distribution (13.8 kV) level substations. The 13.8 kV distribution infrastructure at these substations provides power to localized commercial, industrial and residential customers.

    Recent achievements:

    Middletown Norwalk 345 kV Project – Completed in 2008, 345kV XLPE cables, 115kV XLPE cables, Gas Insulated Switchgear (GIS) equipment technology, 345 KV variable shunt reactors, 600 MVA 345/115 kV auto-transformers

    Grand Avenue – New 115 kV GIS Switching Station in New Haven.

    Pootatuck 115/13.8 kV Substation in Shelton

    Projects in Progress:

    Several 115 kV reliability upgrades within Southwest Connecticut

         


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