Exhibit No.3 EXAMPLES OF OATT LANGUAGE REGARDING RESERVATION PRIORITY FOR EXISTING FIRM SERVICE CUSTOMERS FROM ISO-NE, PJM, AND NYISO NEW ENGLAND POWER POOL RESTATED NEPOOL OPEN ACCESS TRANSMISSION TARIFF FERC ELECTRIC TARIFF, FOURTH REVISED VOLUME NO. 1 (As amended through the Sixty-Fourth Agreement Amending New England Power Pool Agreement) Issued By: David T. Doot, Secretary Issued On: August 31,2000 Effective: November 1, 2000 NEPOOL Tariff Fourth Revised Vol. No. 1 (through the 64th Agreement] - New England Power Pool FERC Electric Tariff, Fourth Revised Volume No. 1 3 1St Rev Sheet No.42 Superseding Original 42 Initial Allocation and Renewal Procedures 3.1 Initial Allocation of Available Transmission Capability: For purposes of determining whether existing capability on the NEPOOL Transmission System is adequate to accommodate a request for new Through or Out Service under Part V of this Tariff, all Completed Applications for new service received during the initial sixty-day period of the Transition Period will be deemed to have been filed simultaneously. A lottery system conducted by an independent accounting firm shall be used to assign priorities for Completed Applications filed simultaneously. All Completed Applications for Through or Out Service received afterthe initial sixty-day period shall be assigned a priority pursuant to Section 27.2. — Issued By: David T. Doot, Secretary Effective: June 28,2000 Issued On: July 28, 2000 NEPOOL Tariff- Fourth Revised Vol. No. 1 (throughthe 64th Agreement] Filed to comply with order of the Federal Energy Regulatory Commission, Docket No. ELOO-62-000, issued June 28,2000, 91 FERC ¶ 61,311(2000). New England Power Pool FERC Electric Tariff, Fourth Revised Volume No. 1 3.2 Original Sheet No. 43A Reservation Priority for Existing Firm Service Customers: Existing firm service customers receiving service with respect to Excepted Transactions and any other existing firm service customers ofthe Participants (wholesale requirements customers and transmission-only customers) with a contract term of [Next Sheet is 44] Issued By: David T. Doot, Secretary Effective: June 28, 2000 Issued On: July 28, 2000 NEPOOL Tariff- Fourth Revised Vol. No. 1 (through the 64th Agreement] Filed to comply with order of the FederalEnergy Regulatory Commission, Docket No. ELOO-62-000, issued June 28,2000, 91 FERC ¶ 61,311(2000). New England Power Pool FERC Electric Tariff, Fourth Revised Volume No. I Original Sheet No. 4344 one year or more have the right to continue to take transmission service at the~ same or a reduced level under this Tariff at the time when the existing contract terminates during or after the Transition Period. This transmission reservation priority is independent of whether the existing customer continues to purchase capacity and energy from its existing supplier or elects to purchase capacity and energy from another supplier. If, at the end of the contract term, the NEPOOL Transmission System cannot accommodate all of the requests for transmission service, the existing firm service customer must agree to accept a contract term at least equal to a competing request by any new Eligible Customer and to pay the currentjust and reasonable rate, filed with the Commission, for such service. This transmission reservation priority for existing firm service customers is an ongoing right that may be exercised as to any firm contract with a term of one year or longer by filing an Application in accordance with this Tariff at least sixty days in advance of the first day of the calendar month in which the existing contract tenn is to terminate. Issued By: David T. Doot, Secretary Effective: June 28, 2000 Issued On: July 28, 2000 NEPOOL Tariff- Fourth Revised Vol. No. 1 (through the 64th Agreement] Filed to comply with order ofthe Federal Energy Regulatory Commission, Docket No. ELOO-62-000, issued June 28, 2000, 91 FERC ¶ 61,311(2000). PJM OPEN ACCESS TRANSMISSION TARIFF Please Note: This document does not include certain Tariff revisions that are pending FERC approval. Includes FERC-Approved Revisions As Of December 13, 2000. PJM Interconnection, L.L.C. 2 Open Access Transmission Tariff First Revised Sheet No. 22a Initial Allocation and Renewal Procedures 2.1 Initial Allocation of Available Transmission Capability: For purposes of determining whether existing capability on the Transmission Provider’s Transmission System is adequate to accommodate a request for firm service under this Tariff, all Completed Applications for new firm transmission service received during the initial sixty (60) day period commencing with the effective date of the Tariff will be deemed to have been filed simultaneously. A lottery system conducted by an independent party, which shall be the Office of the Interconnection, shall be used to assign priorities for Completed Applications filed simultaneously. All Completed Applications for firm transmission service received after the initial sixty (60) day period shall be assigned a priority pursuant to Section 13.2. 2.2 Reservation Priority For Existing Firm Service Customers: Existing firm service customers of any RTO (wholesale requirements and transmission-only, with a contract term of one-year or more), have the right to continue to take transmission service from the Transmission Provider when the contract expires, rolls over or is renewed. This transmission reservation priority is independent of whether the existing customer continues to purchase capacity and energy from the RTO or elects to purchase capacity and energy from another supplier. If at the end of the contract term, the Transmission Provider’s Transmission System cannot accommodate all of the requests for Revised: Effective: August 19, 1998 April 1, 1998 ISO Open Access Transmission Tariff Composite Tariff Reflecting Commission Orders and Filings. Through October 11, 2000 Single-Underlined material indicates additions in effect, material indicates deletions in effect, Double-Underlined material indicates provisions proposed for addition, and Strike Throughmaterial indicates provisions proposed for deletion, in filings awaiting commission action. This composite New York Independent System Operator, Inc. OATT has been prepared for the convenience of the market participants on the basis offilings made with, and accepted or approved by, the Federal Energy Regulatory Commission. The composite OATT has not been ified with the Commission. The filings madewith, and accepted or approved by, the Federal Energy Regulatory Commission shall govern in the case of any discrepancies with the composite OATT. ISO Open Access Transmission Tariff Original Sheet No. 10 1.13d Generator Classes: The type of Generator ~ nuclear, gas turbine, fossil, hydro) which is used by the ISO to determine criteria that must be met for that Generator to qualify as a source of Installed Capacity. 1.14 Good Utility Practice: Any ofthe practices, methods or acts engaged in or approved by a significant portion of the electric utility industiy during the relevant time period, or any of the practices, methods or acts which, in the exercise of reasonable judgment in light of the facts known at the time the decision was made, could have been expected to accomplish the desired result at a reasonable cost consistent with good business practices, reliability, safety and expedition. Good Utility Practice is not intended to be limited to the optimum practice, method, or act to the exclusion of all others, but rather to delineate acceptable practices, methods, or acts generally accepted in the region. 1.14a Government Bonds: Tax-exempt bonds issued by the New York Power Authority pursuant to Section 103 and related provisions of the Internal Revenue Code. 26 U.S.C. § 103. 1.14b Grandfathered Rights: fl~ transmission rights associated with: (1) Modified Wheeling Agreements; (2) Transmission Facility Agreements with transmission wheeling provisions; (3) Third Party Transmission Wheeling Agreements (“TWA”) where the party entitled to exercise the transmission rights associated with such Agreements, has clisen, as provided for in the Tariff, to retain those rights rather than to convert them to TCCs; and (4) Existing Transmission Capacity for Native Load, Attachment L, Table 3. Upon the expiration or termination of (3randfathered Rights, the associated transmission capacity is converted to Residual Transmission Capacity. 1.14c Grandfathered TCCs: The TCCs associated with: (1) Modified Wheeling Agreements; (2) Transmission Facility Agreements with transmission wheeling provisions; (3) Third Party TWAs where the party entitled to exercise ibe transmission tights associated with such agreements, has chosen, as provided for in the Tarifl~to convert those rights to TCCs; and (4) Existing Transmission Capacity forNative Load, Table 3 on Attachment L. 1.14d Hour-Ahead Bid: A Bid submitted at least ninety (90) minutes before the dispatch hour to which it applies. 1.14e Imports: Transmission Service originating within another Control Area and wheeling into the NYCA. Effective: September 1, 1999 ISO Open Access Transmission Tariff First Revised Sheet No. 28 Superseding Original Sheet No. 28 1.42e Supplemental Resource Evaluation (“SRE”): A determination of the least cost selection of additional Generators, which are to be committed loaded, to meet changed conditions that may cause the original system dispatch to be inadequate to meet Load and/or reliability requirements. 1.43 System Impact Study: An assessment by the ISO of (i) the adequacy of the NYS Transmission System to accommodate a request to build iàcilities in order to create incremental transfer capability, resulting in incremental TCCs, in connection with a request for either Firm Point-To-Point Transmission Service or Network Integration Transmission Service; and (ii) the additional costs to be incurred in order to provide the incremental transfer capability. 1.44 Third Party Sale: Any sale for resale in interstate commerce to a Power Purchaser that is not designated as part of Network Load under the Network Integration Transmission Service. 1.44a Third Party Transmission Wheeling Agreements (“Third Party TWAs”): A Transmission Wheeling Agreement, as amended, between Transmission Owners or between a Transmission Owner and an entity that is not a Transmission Owner associated with the purchase (or sale) of Energy, Capacity, and/or Ancillary Services for the benefit of an entity that is not a Transmission Owner. These agreements are listed in Attachment L, Table 1A and lB. 1.44b Total Transfer Capabifity (“TTC”): The amount of electric power that can be transferred over the interconnected transmissionnetwork in a reliable manner. 1.44c Transaction: The purchase and/or sale of Energy or Capacity, or the sale of Andillaty Services. 1.44d Transfer Capability: The measure of the ability of interconnected electrical systems to reliably move or transfer power from one area to another over all transmission facilities (orpaths) betweenthose areas under specified system conditions. 1.44e Transmission Congestion Contracts (“TCCs”): The right to collect or obligation to pay Congestion Rents in the Day-Ahead Market for Energy associated with a single MW of transmission between a specified POT and POW. TCCs are financial instruments that enable Energy buyers and sellers to hedge fluctuations in the price oftransmission. 1.45 Transmission Customer: Any Eligible Customer (or its designated agent) that (i) executes a Service Agreement, or (ii) requests in writing that the ISO file with the Effective: November 18, 1999 ISO Open Access Transmission Tariff Original Sheet No. 32 material modification of this Tariff and/or Service Agreements related to this Tariff that would be inconsistent with any term or provision of the ISO/TO Agreement Any Transmission Customer may withdraw from this Tariff on thirty (30) days prior written notice to the ISO. 2.0 Initial Allocation and Renewal Procedures 2.1 Initial Allocation of Available Transmission Capability: Firm Transmission Service under this Tariff is obtained when the Transmission Customer agrees to pay the Congestion associated with its service. A Transmission Customer may fix the price of Congestion costs associated with its Firm Transmission Service through the purchase of a sufficient quantity of Transmission Congestion Contracts (“TCCs”) with receipt and delivery points corresponding to its Transmission Service. TCCs are solely financial instruments that do not establish any rights to, or the availability of, Transmission Service. For purposes of determining whether existing capability on the NYS Transmission System is adequate to accommodate a request for Firm Transmission Service under this Tariff, the ISO shall employ Security Constrained Unit Commilment (“SCUC”), Balancing Market Evaluation (“BME”), and Security Constrained Dispatch (“SCD”) programs in accordance with Attachment C. The availability of TCCs will be determined in the TCC Auction as described in AttachmentM. 2.2 Reservation Priority For Existing Finn Service: Existing finn service customers Effective: September 1, 1999 ISO Open Access Transmission Tariff Original Sheet No. 33 (wholesale requirements and transmiss~n-only,with a contract term of extending beyond the ISO implementation date), have the light to take Transmission Service from the ISO in accordance with the provisions of Attachment K. This transmission reservation priority is independent of whether the existing customer continues to purchase Capacity and Energy from a Transmission Owner or elects to purchase Capacity and Energy from another Supplier. At the end of the contract terms, all NYS Transmission System capacity associated with Grandfathered Rights and/or TCCs shall be offered for sale as TCCs in the next TCC auction facilitated by the ISO. The sale of these TCCs shall be governed by the provisions of Attachment M. 3.0 Ancillary Services Ancillaiy Services are needed with Transmission Service to maintain reliability within and among the Control Areas affected by the Transmission Service. The ISO is required to provide, and the Transmission Customer is required to purchase, the following Ancillary Services: (i) Scheduling, System Control and Dispatch, (ii) Reactive Supply and Voltage Control from Generation Sources, (iii) Energy Imbalance and (iv) Black Start Service. The ISO is required to offer to provide the following Ancilaiy Services only to the Transmission Customers serving Load within the NYCA: (i) Regulation and Frequency Response, and (u) Operating Reserves. The Transmission Customer serving Load within the NYCA is required to acquire these Ancillary Services, whether from the ISO, a third party, or by Self-Supply pursuant to Schedules 3 and 5. The Transmission Customer may not decline the ISO’s offer of Ancillary Effective: September 1, 1999 Exhibit No.4 TRANSENERGIE RESPONSE TO OPG INFORMATION REQUEST FOR HQ TRANSMISSION RATE APPLICATION R-3401-98 ~c, iUK~ AFF ~Oj7 OPG Information request for HQ Transmission Rate Application R-3401-98 f) Consideration of conditions and constraints external to the TE transmission system. R2f) See response to question I b) above. 3. For the transfer paths listed in HQT-3 Document I Annexe I: a) (i) Please provide the information under each column of Table A presented below. Please breakdown the transfer paths to th~same level of detaIl as provided in Annexe I. Please provide comments on the variability of the calculaI~dATC and the associated factors in the rightmost column. Table A: Transfer Capabilities into Quebec: Normal Summer Peak Conditions (30 de~ee C ambient temperature: typical peak dispatch: all transmission facilities in-service) Path TTC Limiting Contingency Limiting CBM (I) Element TRM (ii) Existing ATC on ATC (iii) Variability ALCAN New Brunswick NEPOOL-T NEPOOL-U VELCO Citizen Util . N~PA HydroOnc Beau-Chat CRT- . NiagMo Ma ciaren Churchill Falls Notes: i) Capacity Benefit Margin as deflned by NERC (or TEs equivalent). in ii) Transmission Reliability Margin as defined by NERC (or Th~cequivalent), in MW iii) Transfer capability reserved for existing contracts. a) (ii) in the same format. please provide, for paths with existing firm contracts, the associated expiry dates of these contracts and the implication on the associated ATC following their expiration. R3u) The information requested basically concerns calculations of ATC on paths open to the wholesale market. That information is considered to be strategic information from a commercial perspective. So a~not to give preference to any interveners operating in the energy market, this type of information is available only via TransEnergie’s OASIS site at ~~//~ww.transenergie.com/oa.sis. Docutncnt#: Comments Contracts 5 urt~KttJTORY AFF — OPG Information request for UQ Transmission RateApplication R-3401-98 3. For the tran.cfer paths listed in HQT-3 Document I Annexe I: b) Please provide the same information as ruquesred for Table A for Transfer Capabilities out. of Quebec under NormaL Summer Peak Conditions (30 degree C ambient temperature). Path TTC Limiting Limiting Contingency Element CBM (i) TRM (ii) Existing Contracts ATC (lii) Comments on ATC Variability ALCAN Ncw Brunswick NEPOOL-I NEPOOL-fI VELCO Citizen tjtil NYPA HydroOne Beau-Chat CRTNiagMo . , Maciaren Churchill Falls R3b) 3. Se~respoi~eto question 3a) above. For the transfer paths Listed in l-IQT-3 Document I A1LICXC I: c) Pl~a~c provide the same information as requested for Table A for Transfer Capabilities into Quebec under Normal Winter Peak Conditions (0 degret C ambient temperature). Path TTC Limiting Contingency Limiting Element CBM (i) TRM (II) Existing ATC Comments Contracts (iii) on ATC Variability ALCAN New Brunswick NEPOOL-I NEI’OOL.JI VELCO Citizen Util NYPA HydroOnc Bca u-Chat CRTNiag~4o Document if: 6