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Request for Proposals: Repowering Study for the Northport and Port Jefferson Power Stations

January 7, 2008
Answers to questions received.

December 12, 2007
KeySpan Corporate Services LLC (“KeySpan”), a National Grid Company, on behalf of KeySpan
Engineering and Survey, Incorporated (“KE&S”), is soliciting firms for bona fide proposals,
through this Request for Proposals (“RFP”) to provide the following services to KE&S, on behalf
of the Long Island Power Authority (the “Authority”) and its wholly-owned subsidiary the Long
Island Lighting Company d/b/a/ LIPA (“LIPA”) (collectively referred to as the “Authority”):
Performing a separate re-powering study for both the Northport and the Port Jefferson power
stations (the “Services”).

Request For Proposal Documents

Calendar of Events The proposed schedule of key dates in this RFP is as follows:

	Issuance of RFP	December 12, 2007
	Deadline for Submission of Questions	January 4, 2008
	Notice of Intent to Submit Proposal	January 4, 2008
	Proposal Due Date	January 10, 2008
	Selection of Proposer	Mid to Late January 2008

Questions
Questions regarding this RFP should be emailed to Mathew Sanderleaf at
msanderleaf@keyspanenergy.com before the deadline of January 4, 2008. A list of all questions
received by KeySpan, and KeySpan’s answers to those questions, will be distributed to those
Proposers who have been recorded as having received a copy of the RFP from KeySpan.

No other contact regarding this RFP with KeySpan, KE&S, the Authority and the Authority’s Board members, staff or Proposers will be allowed during the duration of this RFP. Any contact regarding this RFP, beyond that allowed in this RFP may be grounds for disqualification from the RFP process.

Submission of Proposals
Each Proposer interested in submitting a proposal should fax the Attachment C, Notice of Intent to
Mathew Sanderleaf, Senior Buyer, at (516) 545-4715 on or before January 4, 2007. Submission of
a Notice of Intent to Propose is not a pre-requisite for submitting a proposal.

Three (3) original copies of your proposal are due no later than 5:00 pm January 10, 2008, in
a sealed package or packages. In addition, copies of the cost and technical portions of your
proposal are to be provided on five (5) sets of CDs. Each set will consist of a separate CD for
the technical and the cost portion of your proposal. All materials should be delivered to:

KeySpan Corporate Services, LLC
175 East Old Country Road
Hicksville, NY 11801
Attention: Mathew Sanderleaf, Senior Buyer

Proposals received after this deadline will not be considered, nor will faxed or e-mailed proposals,
whenever received. Interviews of the top-qualifying firms may be conducted at KeySpan’s
discretion. Failure to submit a proposal on time will not be waived by KeySpan under any
circumstances (e.g., traffic conditions, mail or courier failure, etc.) Once submitted, proposals
will remain valid for one hundred eighty (180) calendar days.

Neither KeySpan, KE&S, nor the Authority, will reimburse Proposers for any expenses incurred
in connection with this RFP, including the costs of preparing the response and/or providing any
additional information and travel expenses relating to an interview. All material that is submitted
in response to this RFP will become the sole property of KE&S and the Authority. KE&S and the
Authority expressly reserve the right to utilize any and all ideas submitted in the proposals
received unless covered by legal patent or proprietary rights.

Contact Information
Pursuant to State Finance Law sections 139-j and 139-k, this RFP includes and imposes certain
restrictions on communications between KeySpan, KE&S and the Authority and Proposers during
the procurement process. A Proposer is restricted from making contacts (i.e., an oral, written or
electronic communications which a reasonable person would infer as an attempt to unduly
influence the award, denial, or amendment of a contract) from issuance of the RFP through final
award and approval of the resulting Procurement Contract by the Authority and the Office of the
State Comptroller (“restricted period”) to any KeySpan, KE&S, Authority staff or Trustee (or
consultants) other than as designated herein, unless it is a contact that is included among certain
statutory exemptions as set forth in State Finance Law sections 139-j(3) (a). The Authority’s
designated staff for this RFP, as of the date hereof, is Mr. Mathew Sanderleaf , (516) 545-4770
KeySpan, KE&S and Authority staff and Trustees (and consultants) are also required to obtain
certain information when contacted during the restricted period and make a determination of the
responsibility of the Proposer pursuant to these two statutes. Certain findings of non-responsibility
can result in rejection for contract award, and in the event of two findings within a 4 year period,
the Proposer is debarred from obtaining governmental Procurement Contracts. Further information about these requirements can be found in the Authority’s Guidelines Regarding Procurement Lobbying, which is provided as an attachment to this RFP.