<PAGE>

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                             ---------------------

                                   FORM 10-Q

(MARK ONE)

    [X]         QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2003

                                       OR

    [  ]       TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

             FOR THE TRANSITION PERIOD FROM           TO

                        COMMISSION FILE NUMBER 333-84206

                            CEDAR BRAKES II, L.L.C.
             (Exact Name of Registrant as Specified in its Charter)

<Table>
<S>                                             <C>
                  DELAWARE                                       76-0613853
        (State or Other Jurisdiction                          (I.R.S. Employer
      of Incorporation or Organization)                      Identification No.)

              EL PASO BUILDING
            1001 LOUISIANA STREET
               HOUSTON, TEXAS                                       77002
  (Address of Principal Executive Offices)                       (Zip Code)
</Table>

       Registrant's Telephone Number, Including Area Code: (713) 420-2600

     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.  Yes  [X]  No  [ ]

     Indicate by check mark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Exchange Act.  Yes  [ ]  No  [X]

     As of May 12, 2003, 100 percent of the membership interest of Cedar Brakes
II, L.L.C. is owned directly by Mesquite Investors, L.L.C. Such membership
interest is not publicly traded and therefore has no separate, quantifiable
market value.

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
<PAGE>

                        PART I -- FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

                            CEDAR BRAKES II, L.L.C.

                       CONDENSED STATEMENTS OF OPERATIONS
                                 (IN THOUSANDS)
                                  (UNAUDITED)

<Table>
<Caption>
                                                                QUARTER ENDED
                                                                  MARCH 31,
                                                              ------------------
                                                                2003      2002
                                                              --------   -------
<S>                                                           <C>        <C>
Operating revenues
  Electricity sales.........................................  $ 25,844   $26,364
                                                              --------   -------
Operating expenses
  Electricity purchases -- affiliate........................    10,587    10,432
  Change in fair value of power agreements..................    12,301     8,295
  Administrative fees -- affiliate..........................        25        25
  Other.....................................................        75        --
                                                              --------   -------
                                                                22,988    18,752
                                                              --------   -------
Operating income............................................     2,856     7,612
                                                              --------   -------
Other (income) expense
  Interest income...........................................       (99)     (108)
  Interest and debt expense.................................    10,856    11,019
                                                              --------   -------
                                                                10,757    10,911
                                                              --------   -------
Net loss....................................................  $ (7,901)  $(3,299)
                                                              ========   =======
</Table>

                            See accompanying notes.

                                        1
<PAGE>

                            CEDAR BRAKES II, L.L.C.

                            CONDENSED BALANCE SHEETS
                                 (IN THOUSANDS)
                                  (UNAUDITED)

<Table>
<Caption>
                                                               MARCH 31,   DECEMBER 31,
                                                                 2003          2002
                                                               ---------   ------------
<S>                                                            <C>         <C>
                                        ASSETS
Current assets
  Cash and cash equivalents.................................   $  4,934      $ 31,197
  Accounts receivable -- Public Service Electric and Gas
     Company................................................     17,450        10,288
  Amended power purchase agreement..........................     49,405        63,156
  Mirror power purchase agreement -- affiliate..............     16,100         2,840
                                                               --------      --------
          Total current assets..............................     87,889       107,481
Amended power purchase agreement............................    424,579       464,479
Mirror power purchase agreement -- affiliate................     42,795        14,705
Restricted cash.............................................     20,395        21,013
Deferred financing costs, net...............................      5,518         5,751
                                                               --------      --------
          Total assets......................................   $581,176      $613,429
                                                               ========      ========
                           LIABILITIES AND MEMBER'S CAPITAL
Current liabilities
  Accounts payable
     Trade..................................................   $     98      $    104
     Affiliate..............................................      7,189         8,635
  Accrued interest payable..................................      3,399        14,009
  Current maturities of long-term debt......................     21,398        22,261
                                                               --------      --------
          Total current liabilities.........................     32,084        45,009
Long-term debt, less current maturities.....................    386,436       397,863
Commitments and contingencies
Member's capital............................................    162,656       170,557
                                                               --------      --------
          Total liabilities and member's capital............   $581,176      $613,429
                                                               ========      ========
</Table>

                            See accompanying notes.

                                        2
<PAGE>

                            CEDAR BRAKES II, L.L.C.

                       CONDENSED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
                                  (UNAUDITED)

<Table>
<Caption>
                                                                 QUARTER ENDED
                                                                   MARCH 31,
                                                               ------------------
                                                                 2003      2002
                                                               --------   -------
<S>                                                            <C>        <C>
Cash flows from operating activities
  Net loss..................................................   $ (7,901)  $(3,299)
  Adjustments to reconcile net loss to net cash from
     operating activities
     Change in fair value of power agreements...............     12,301     8,295
     Amortization of bond discount..........................        221       227
     Amortization of deferred financing costs...............        233       102
     Working capital changes
       Accounts receivable -- Public Service Electric and
        Gas Company.........................................     (7,162)   (1,230)
       Accounts payable -- trade and affiliate..............     (1,452)    4,211
       Accrued interest payable.............................    (10,610)   10,650
                                                               --------   -------
          Net cash (used in) provided by operating
           activities.......................................    (14,370)   18,956
                                                               --------   -------
Cash flows from financing activities
  Principal payments on long-term debt......................    (12,511)       --
  Change in restricted cash.................................        618      (331)
                                                               --------   -------
          Net cash used in financing activities.............    (11,893)     (331)
                                                               --------   -------
Change in cash and cash equivalents.........................    (26,263)   18,625
Cash and cash equivalents
  Beginning of period.......................................     31,197        --
                                                               --------   -------
  End of period.............................................   $  4,934   $18,625
                                                               ========   =======
Supplemental disclosure of cash flow information
  Cash paid for interest....................................   $ 21,013   $    --
                                                               ========   =======
</Table>

                            See accompanying notes.

                                        3
<PAGE>

                            CEDAR BRAKES II, L.L.C.

                  NOTES TO THE CONDENSED FINANCIAL STATEMENTS

                                  (UNAUDITED)

1.  BASIS OF PRESENTATION

     We are a Delaware limited liability company organized in May 2001 under the
terms of a limited liability company agreement. We are a wholly owned subsidiary
of Mesquite Investors, L.L.C., an entity which is indirectly owned by Limestone
Electron Trust and a subsidiary of El Paso Corporation. El Paso Chaparral
Management, L.P., a wholly owned indirect subsidiary of El Paso, manages the
operations of Mesquite Investors. Our sole business is to sell electric energy
and provide electric capacity to Public Service Electric and Gas Company, a New
Jersey corporation, under an amended power purchase agreement that we entered
into with Public Service Electric. We began operating under this amended power
purchase agreement on December 13, 2001.

     We prepared this Quarterly Report on Form 10-Q under the rules and
regulations of the United States Securities and Exchange Commission. Because
this is an interim period filing presented using a condensed format, it does not
include all of the disclosures required by generally accepted accounting
principles. You should read it along with our 2002 Annual Report on Form 10-K/A
which includes a summary of our significant accounting policies and other
disclosures. The condensed financial statements as of March 31, 2003 and for the
quarters ended March 31, 2003 and 2002 are unaudited. We derived the condensed
balance sheet as of December 31, 2002 from the audited balance sheet filed in
our 2002 Form 10-K/A. We believe we have made all adjustments, all of which are
of a normal, recurring nature, to fairly present our interim period results. Due
to the seasonal nature of our business, information for interim periods may not
necessarily indicate the results of operations for the entire year.

     Our accounting policies are consistent with those discussed in our 2002
Form 10-K/A.

  Potential Changes in Mesquite Investors' Ownership

     Chaparral Investors, L.L.C. is the parent of Mesquite Investors, our sole
member. Prior to March 17, 2003, Chaparral was owned approximately 20 percent by
a wholly owned subsidiary of El Paso and 80 percent by Limestone Electron Trust,
an unaffiliated third party. On March 17, 2003, El Paso contributed $1 billion
to Limestone in exchange for a non-controlling interest which increased El
Paso's effective ownership in Chaparral to approximately 90 percent. Also in
March 2003, El Paso notified Limestone that it would exercise its rights to
purchase all of the outstanding third party equity in Limestone on May 31, 2003.
If El Paso acquires the remaining Limestone equity interest in Chaparral, we
would become a wholly owned, indirect subsidiary of El Paso.

2.  COMMITMENTS AND CONTINGENCIES

  Amended Power Purchase Agreement

     We have an amended power purchase agreement with Public Service Electric
that extends through March 5, 2013. Under the amended power purchase agreement,
we sell and deliver electric energy to Public Service Electric at established
prices and delivery points within the Pennsylvania-New Jersey-Maryland power
system. Additionally, we are required to arrange for 189 megawatts per day of
capacity through October 31, 2008 and 149 megawatts per day of electric capacity
from November 1, 2008 through the end of the agreement to be made available to
Public Service Electric. The prices under the agreement are specified on an
annual basis and escalate each year over the contract term beginning in 2003.
The price was $80.88 per megawatt hour (MWh) in 2002, is $77.75 per MWh in 2003,
and increases annually thereafter to $105.42 per MWh in 2013. Annual energy
deliveries cannot exceed the specified maximum amounts, which range from
1,501,825 MWh in 2003 to 1,171,424 MWh in 2012 and 205,400 MWh in 2013.

                                        4
<PAGE>

     If we fail to deliver all or part of the scheduled energy or fail to
schedule sufficient deliveries to meet the minimum energy deliveries for reasons
within our control, Public Service Electric's payment to us may be reduced by a
credit as specified in the amended power purchase agreement, if any, for energy
purchased by Public Service Electric over the prices stated in our amended power
purchase agreement. No credits were applied during the quarters ended March 31,
2003 or 2002.

     If we fail to provide all or part of the required electric capacity for
reasons within our control, Public Service Electric must use reasonable efforts
to purchase replacement capacity in the amount of the shortfall. We must
reimburse Public Service Electric for all costs associated with the replacement
capacity. If Public Service Electric is unable to replace this capacity
shortfall, Public Service Electric's payment to us will be reduced by a credit
as specified in the amended power purchase agreement. Generally, the credit
would equal the deficiency charge, if any, payable by Public Service Electric as
a direct result of our failure to provide the required electric capacity. No
credits were applied during the quarters ended March 31, 2003 or 2002.

  Mirror Power Purchase Agreement

     In order to meet our electric energy delivery and electric capacity
commitments under the amended power purchase agreement, we entered into a mirror
power purchase agreement with El Paso Merchant. The mirror power purchase
agreement has the same term as the amended power purchase agreement. Under this
agreement, we purchase energy at an established price and at quantities
sufficient to meet our obligations to Public Service Electric. The established
price under the mirror power purchase agreement is $32.00 per MWh for the term
of the contract.

     Under the mirror power purchase agreement, El Paso Merchant must schedule
and deliver to us during each year both the minimum hourly electric energy
deliveries and the full amount of electric energy deliveries that we are
obligated to deliver under our amended power purchase agreement with Public
Service Electric and El Paso Merchant must make available to us capacity credits
equal to the electric capacity we are required to provide under our amended
power purchase agreement with Public Service Electric. If El Paso Merchant fails
to deliver all or part of the scheduled energy to us for any reason within their
control, our payment to El Paso Merchant will be reduced by a credit calculated
in the same manner as the credit to Public Service Electric described above. No
credits were taken during the quarters ended March 31, 2003 or 2002.

     If El Paso Merchant fails in any month to provide all or part of the
capacity, for any reason within their control, our payment to El Paso Merchant
will be reduced by a credit calculated in the same manner as the credit to
Public Service Electric as a direct result of our failure to provide capacity
under the amended power purchase agreement. No credits were taken during the
quarters ended March 31, 2003 or 2002. El Paso Merchant's performance under this
agreement has been guaranteed by El Paso Corporation under a performance
guaranty (see Note 3).

3.  RELATED PARTY TRANSACTIONS

  Mirror Power Purchase Agreement

     El Paso Merchant provides electric energy and electric capacity to us under
the mirror power purchase agreement as discussed above. Purchases under this
agreement were based on market rates at the time the agreement was negotiated.
Total purchases during the first quarters of 2003 and 2002 are reflected as
electricity purchases -- affiliate in our condensed statements of operations.
Amounts owed under the agreement are included in accounts payable -- affiliate
on our condensed balance sheets. See Note 2 for further discussion.

  Administrative Services Agreement

     We have an administrative services agreement with El Paso Merchant to
provide project management, finance and accounting services to us for a fee of
$100,000 per year through 2013. In addition to the base fee, we are obligated to
reimburse El Paso Merchant for direct expenses other than project management,
finance and accounting services that may be incurred on our behalf. Fees and
expenses under this agreement are due

                                        5
<PAGE>

and payable only to the extent that we have sufficient cash after paying
obligations under our bond indenture. Total fees incurred under this agreement
during 2003 and 2002 are reflected as administrative fees -- affiliate in our
condensed statements of operations. Amounts owed under this agreement are
included in accounts payable -- affiliate on our condensed balance sheets.

  El Paso Corporation Performance Guaranty

     El Paso Corporation, the parent company of El Paso Merchant, entered into a
performance guaranty with us on December 12, 2001, which expires after the
expiration of El Paso Merchant's obligations under the mirror power purchase and
administrative services agreements. Under the performance guaranty, El Paso
Corporation guarantees to us the punctual performance of all of El Paso
Merchant's obligations under the mirror power purchase and administrative
services agreements.

     On February 7, 2003, Standard and Poor's Ratings Services downgraded El
Paso's senior unsecured debt to a rating of "B" and on February 11, 2003,
Moody's Investors Service downgraded El Paso's senior unsecured debt ratings to
"Caa1". Both rating agencies maintain a negative outlook on El Paso's credit
ratings, indicating the possibility of further ratings downgrades.

  Distributions

     As permitted by our senior secured bond indenture and our limited liability
company agreement, cash distributions may be made to our member on March 1 and
September 1 of each year starting September 1, 2002 for all excess cash,
provided that no event of default has occurred and the debt coverage ratio
calculated as of that date for the most recently ended six-month period equals
or exceeds 1.03 to 1.00. No distributions were made during the first quarters of
2003 or 2002.

4.  FAIR VALUE OF FINANCIAL INSTRUMENTS

     As of March 31, 2003 and December 31, 2002, the carrying amounts of our
financial instruments, including cash, cash equivalents and trade receivables
and payables, are representative of fair value because of their short-term
nature. The fair value of our long-term debt was $354.7 million as of March 31,
2003, and $336.4 million as of December 31, 2002. The fair value of our
long-term debt has been estimated based on quoted market prices for the same or
similar issues. The fair values of our derivative instruments are reflected on
our condensed balance sheets.

     On February 10, 2003, Standard and Poor's downgraded its ratings on our
bonds to "B" and on February 12, 2003, Moody's downgraded its ratings on our
bonds to "Caa1". In January 2003, Fitch Ratings downgraded its ratings on our
bonds to "BB+" and, on February 14, 2003, Fitch cut its ratings further to "B".
The downgrades by all of the rating agencies are the result of previous actions
taken by the rating agencies on the credit ratings of El Paso, which guarantees
El Paso Merchant's performance under our mirror power purchase and
administrative services agreements. All of the rating agencies maintain a
negative outlook on our credit ratings, indicating the possibility of further
downgrades. These downgrades and further downgrades of El Paso's credit ratings
could indirectly have a negative impact on the fair value of our long-term debt.

     In May 2002, Standard and Poor's lowered the senior unsecured credit rating
of our only customer, Public Service Electric, from "BBB+" to "BBB-". Although
our credit rating is not directly related to the credit rating of Public Service
Electric, an indirect result of this downgrade was a reduction in the credit
rating of our bonds in June 2002 by Standard and Poor's from "BBB" to "BBB-".
Further downgrades of Public Service Electric could indirectly have a negative
impact on the fair value of our long-term debt.

ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS

     The information contained in Item 2 updates, and you should read it in
conjunction with, information disclosed in our 2002 Form 10-K/A dated May 15,
2003, in addition to the condensed financial statements and notes presented in
Item 1 of this Quarterly Report on Form 10-Q.

                                        6
<PAGE>

RECENT DEVELOPMENTS

Downgrade of Our Bonds

     On February 10, 2003, Standard and Poor's downgraded its ratings on our
bonds to "B" and on February 12, 2003, Moody's downgraded its ratings on our
bonds to "Caa1". In January 2003, Fitch Ratings downgraded its ratings on our
bonds to "BB+" from "BBB" and, on February 14, 2003, Fitch cut its ratings
further to "B". The downgrades by all of the rating agencies are the result of
previous actions taken by the rating agencies on the credit ratings of El Paso,
which guarantees El Paso Merchant's performance under our mirror power purchase
and administrative services agreements. All of the rating agencies maintain a
negative outlook on our credit ratings indicating the possibility of further
downgrades.

Potential Changes in Mesquite Investors' Ownership

     Chaparral Investors, L.L.C. is the parent of Mesquite Investors, our sole
member. Prior to March 17, 2003, Chaparral was owned approximately 20 percent by
a wholly owned subsidiary of El Paso and 80 percent by Limestone Electron Trust,
an unaffiliated third party. On March 17, 2003, El Paso contributed $1 billion
to Limestone in exchange for a non-controlling interest which increased El
Paso's effective ownership in Chaparral to approximately 90 percent. Also in
March 2003, El Paso notified Limestone that it would exercise its rights to
purchase all of the outstanding third party equity in Limestone on May 31, 2003.
If El Paso acquires the remaining Limestone equity interest in Chaparral, we
would become a wholly owned, indirect subsidiary of El Paso.

Downgrade of El Paso Corporation's Credit Ratings

     On February 7, 2003, Standard and Poor's downgraded El Paso's senior
unsecured debt to a rating of "B." On February 11, 2003, Moody's downgraded El
Paso's senior unsecured debt ratings to "Caa1." Both rating agencies maintain a
negative outlook on El Paso's credit ratings, indicating the possibility of
further ratings downgrades. El Paso is the parent of El Paso Merchant. The
credit rating downgrades of El Paso may impact El Paso Merchant's ability to
perform under the provisions of the mirror power purchase or administrative
services agreements.

El Paso Corporation Announces Exit of Energy Trading Activities

     El Paso's credit downgrades in the third and fourth quarters of 2002 and
the deterioration of the energy trading environment led to its decision in
November 2002 to exit the energy trading business and pursue an orderly
liquidation of its trading portfolio. El Paso anticipates this liquidation may
occur through 2004. If El Paso seeks to assign its obligations under the mirror
power purchase and administrative services agreements to another party, our
indenture requires the consent of the bondholders to any such assignment. El
Paso has guaranteed to us the punctual performance of all of El Paso Merchant's
obligations under the mirror power purchase and administrative services
agreements. We are in the process of evaluating what impact, if any, this
announcement will have on these agreements. If El Paso Merchant ceases to
perform its obligations under its agreements with us and El Paso fails to meet
its obligations under the guaranty, there can be no assurance that we will be
able to make payments of principal and interest on our debt. In such event, we
would be able to seek a replacement power provider and administrative services
provider and to pursue our remedies under the contracts with El Paso Merchant
and the guaranty issued by El Paso.

El Paso Proxy Contest

     On February 18, 2003, Selim Zilkha, a stockholder of El Paso, announced his
intention to initiate a proxy solicitation to replace El Paso's entire board of
directors with his own nominees and on May 12, 2003, Mr. Zilkha filed his
definitive proxy statement to that effect with the SEC. This proxy contest may
be highly disruptive and may negatively impact El Paso's ability to achieve the
stated objectives of its 2003 Operational and Financial Plan. In addition, El
Paso may have difficulty attracting and retaining key personnel until such proxy
contest is resolved. Therefore, this proxy contest, whether or not successful,
could have a material

                                        7
<PAGE>

adverse effect on El Paso's liquidity and financial condition, which, in turn,
could adversely affect our liquidity and financial condition.

GENERAL

Power Contract Restructurings

     Our sole business is to sell electric energy and provide electric capacity
to Public Service Electric under our amended power purchase agreement with them.
We were formed in May 2001, but did not begin operations until December 13, 2001
when the Cogen Technologies NJ Venture, or Bayonne, power purchase agreement
with Public Service Electric and the Camden Cogen, L.P., or Camden, power
purchase agreement with Public Service Electric were contributed to us by our
member. The amended power purchase agreement combined and superseded the Bayonne
and Camden power purchase agreements with Public Service Electric. The
contribution of these power purchase agreements to us was a part of the process
that has become known in the power industry as a "power contract restructuring."
Many domestic power plants have long-term power purchase agreements with
regulated utilities that were entered into under the Public Utility Regulatory
Policies Act of 1978 (PURPA). The power sold to the utility under these PURPA
contracts is required to be delivered from a specified power generation plant at
power prices that are usually significantly higher than the cost of power in the
wholesale power market. The cost of generating power at these PURPA power plants
is typically higher than the cost that would be incurred by obtaining the power
in the wholesale power market, principally because the PURPA power plants are
less efficient than newer power generation facilities.

     In a power contract restructuring, the PURPA power purchase agreement is
amended so that the power sold to the utility does not have to be provided from
the specific power plant. Because we are able to buy lower cost power in the
wholesale power market, we have the ability to reduce the cost paid by the
utility, thereby inducing the utility to enter into the power contract
restructuring transaction. Following the contract restructuring, the power plant
operates on a merchant basis, which means that it is no longer dedicated to one
buyer and will operate only when power prices are high enough to make operations
economical. Prior to a power contract restructuring, the power plant and its
related PURPA power purchase agreement are accounted for at their historical
cost, which is either the cost of construction or, if acquired, the acquisition
cost. Revenues and expenses prior to restructuring are, in most cases, accounted
for on an accrual basis as power is generated and sold to the utility. As part
of the restructuring, any related fuel supply and steam agreements are generally
amended or terminated, the value of the remaining merchant plant is evaluated
for possible impairment, and the restructured power agreements are adjusted to
their estimated fair value. The restructured power purchase agreement can then
be sold or we can enter into an offsetting, or mirror, power purchase agreement.
In cases when we enter into a mirror power purchase agreement, we use the
restructured agreement and the mirror power purchase agreement along with the
fixed-price spread between these agreements as collateral to obtain financing.
The offsetting power purchase agreement requires the power supplier, which can
be an affiliate or third-party, to provide long-term fixed price power in
amounts sufficient for us to meet our obligations under the restructured power
agreements.

     Under the pre-existing power purchase agreements, Bayonne and Camden sold
generating capacity and associated energy from the Bayonne and Camden facilities
to Public Service Electric and the Bayonne and Camden facilities were required
to be qualifying facilities under PURPA. The Bayonne power purchase agreement
and the Camden power purchase agreement each required that the sellers under the
respective agreements source capacity and energy only from their respective
facilities. The amended power purchase agreement eliminated the requirement that
the Bayonne facility and the Camden facility be the only sources of energy
provided under that agreement. The elimination of this requirement benefited us
because now we can source energy from any source connected to the
Pennsylvania-New Jersey-Maryland (PJM) market, and the cost of energy sourced in
this manner may be less expensive than the cost to produce such energy at the
Bayonne or Camden facilities. The benefits of the amended power purchase
agreement also include significantly more flexibility in scheduling energy
deliveries, including a greater degree of daily delivery flexibility. From the
perspective of Public Service Electric, our ability to source lower cost power
in the market allowed us to provide Public Service Electric with a benefit in
the form of a payment from us of $64.0 million when the restructured power
purchase agreement became effective.

                                        8
<PAGE>

     Through a series of transactions, the pre-existing power purchase
agreements were distributed to our member who, in turn, contributed them to us
on December 12, 2001 at a book value of $299.1 million. We subsequently combined
and amended the pre-existing power purchase agreements and began operating under
our amended power purchase agreement on December 13, 2001. In order to meet our
energy delivery and electric capacity commitments under the amended power
purchase agreement, we entered into a mirror power purchase agreement with El
Paso Merchant. The mirror power purchase agreement has the same term as the
amended power purchase agreement and we purchase energy at an established price
and at quantities sufficient to meet our obligations to Public Service Electric.

     In December 2001, we issued 9.875% Series A Senior Secured Bonds, due 2013,
with an aggregate principal amount of $431.4 million at a discount of $6.4
million. We completed an exchange of the Series A bonds for registered 9.875%
Series B Senior Secured Bonds, due 2013, on July 31, 2002. The terms of the
Series B bonds and the Series A bonds are substantially the same in all material
respects, except that the Series B bonds are registered with the Securities and
Exchange Commission. Scheduled payments of principal and interest on the bonds
are expected to be paid from the positive margin created between the sales of
electric energy and capacity to Public Service Electric and purchases of
electric energy and capacity from El Paso Merchant.

     We account for our amended power purchase agreement and our mirror power
purchase agreement as derivative instruments under the provisions of SFAS No.
133, Accounting for Derivative Instruments and Hedging Activities, as amended.
As a result, the amended power purchase and the mirror power purchase agreements
are recorded on our condensed balance sheets at their estimated fair values,
with changes in those estimated fair values recorded in our condensed statements
of operations.

     As of March 31, 2003, these agreements had an estimated net fair value of
$532.9 million. For the quarter ended March 31, 2003, the change in estimated
net fair value of these agreements was a decrease of $12.3 million and was
recorded as a component of operating expenses in our condensed statement of
operations. The fair values of these agreements are calculated based on expected
cash receipts and payments under the agreements compared to the estimated future
market prices of power. These estimated market prices for power consider a
combination of available market data and pricing information supplied by a third
party. The differences between market and contractual prices are then discounted
using discount rates that consider the counterparty credit risk and current and
anticipated market conditions as reflected in the United States Treasury rate.
We make adjustments to this discount rate when we believe that market changes in
the rates result in changes in fair values that can be realized. As of March 31,
2003 and 2002, the discount rate used to calculate the fair value of the amended
power purchase agreement was 7.02 percent and the rates used to calculate the
fair value of the mirror power purchase agreement were 12.72 percent and 7.77
percent. The discount rate used in March 2003 of 12.72 percent for the mirror
power purchase agreement decreased from the rate of 14.72 percent used at
December 31, 2002 due to a decrease in the counterparty credit spread.

RESULTS OF OPERATIONS

First Quarter 2003 Compared to First Quarter 2002

     For the quarter ended March 31, 2003, we had a net loss of $7.9 million
compared to a net loss of $3.3 million for the quarter ended March 31, 2002.
During the first quarter of 2003, we generated operating revenues of $25.8
million from the sale of approximately 332,400 megawatt hours of electric energy
and from providing electric capacity to Public Service Electric compared to
revenues of $26.4 million from the sale of approximately 326,000 megawatt hours
of electric energy and providing electric capacity for the same period in 2002.
Operating expenses were approximately $23.0 million for the first quarter of
2003 and $18.8 million for the first quarter of 2002. The increase in operating
expenses was primarily due to a larger decrease in the estimated fair value of
our power agreements in 2003. The larger decrease in the fair value of our power
agreements during 2003 was primarily due to the increase in the discount rate
used to estimate the fair value of our mirror power purchase agreement from
March 2002 to March 2003. Our operating expenses also include fees incurred
under our administrative services agreement with El Paso Merchant. Interest and
debt

                                        9
<PAGE>

expense decreased to $10.9 million for the quarter ended March 31, 2003 compared
to $11.0 million for the same period in the prior year primarily due to a lower
outstanding principal balance in 2003.

LIQUIDITY AND CAPITAL RESOURCES

Cash from Operating Activities

     Net cash used in operating activities was $14.4 million for the quarter
ended March 31, 2003 compared to net cash provided by operating activities of
$19.0 million for the quarter ended March 31, 2002. The difference is due
primarily to changes in working capital items, cash paid for interest, and other
working capital changes created by the timing of payments made and received.

Cash from Financing Activities

     Net cash used in financing activities was $11.9 million for the quarter
ended March 31, 2003 and consisted primarily of a $12.5 million principal
payment on our long-term debt, partially offset by a decrease in restricted
cash.

Distributions and Debt Service

     Under our bond indenture, cash distributions may be made to our member on
March 1 and September 1 of each year starting September 1, 2002 for all excess
cash, provided that no event of default or defaults have occurred and the debt
coverage ratio calculated as of that date for the most recently ended six-month
period equals or exceeds 1.03 to 1.00, and provided further that the proceeds of
additional bonds issued under the indenture (which are only available if our
bonds are rated equal to our original bond ratings) may be distributed to our
member at any time. We did not make a distribution to our member on March 1,
2003.

                                        10
<PAGE>

CAUTIONARY STATEMENT FOR PURPOSES OF THE "SAFE HARBOR" PROVISIONS OF THE PRIVATE
                    SECURITIES LITIGATION REFORM ACT OF 1995

     This report contains or incorporates by reference forward-looking
statements within the meaning of the Private Securities Litigation Reform Act of
1995. Where any forward-looking statement includes a statement of the
assumptions or bases underlying the forward-looking statement, we caution that,
while we believe these assumptions or bases to be reasonable and to be made in
good faith, assumed facts or bases almost always vary from the actual results,
and the differences between assumed facts or bases and actual results can be
material, depending on the circumstances. Where, in any forward-looking
statement, we or our management express an expectation or belief as to future
results, that expectation or belief is expressed in good faith and is believed
to have a reasonable basis. We cannot assure you, however, that the statement of
expectation or belief will result or be achieved or accomplished. The words
"believe," "expect," "estimate," "anticipate" and similar expressions will
generally identify forward-looking statements.

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

INTEREST RATE RISK

     The fair value of our debt is exposed to changing interest rates and
underlying credit risks. The fair value of our long-term fixed rate debt was
$354.7 million as of March 31, 2003 and $336.4 million as of December 31, 2002.
The fair value of our long-term debt was estimated based on quoted market prices
for the same or similar issues.

     On February 10, 2003, Standard and Poor's downgraded its ratings on our
bonds to "B" and on February 12, 2003, Moody's downgraded its ratings on our
bonds to "Caa1". In January 2003, Fitch downgraded its ratings on our bonds to
"BB+" and, on February 14, 2003, Fitch cut its ratings to "B". The downgrades by
all of the rating agencies are the result of previous actions taken by the
rating agencies on the credit ratings of El Paso, which guarantees El Paso
Merchant's performance under our mirror power purchase and administrative
services agreements. All rating agencies maintain a negative outlook on our
credit ratings and El Paso's credit ratings, indicating the possibility of
further downgrades. Further downgrades of El Paso's credit ratings could
indirectly have a negative impact on the fair value of our long-term debt.

     Our power agreements are also sensitive to interest rate fluctuations since
the anticipated cash flows from these agreements are discounted at a United
States Treasury rate, adjusted for credit risk, to arrive at their fair value.
Changes in these rates impact our fair value estimates. The sensitivity of the
fair value of our power agreements to changes in interest rates is as follows:

<Table>
<Caption>
                                                              1% INCREASE           1% DECREASE
                                                          -------------------   -------------------
                                                  FAIR     FAIR     INCREASE     FAIR     INCREASE
                                                 VALUE    VALUE    (DECREASE)   VALUE    (DECREASE)
                                                 ------   ------   ----------   ------   ----------
                                                                   (IN MILLIONS)
<S>                                              <C>      <C>      <C>          <C>      <C>
Amended power purchase agreement...............  $474.0   $453.1     $(20.9)    $496.2     $22.2
Mirror power purchase agreement................    58.9     56.7       (2.2)      61.3       2.4
                                                 ------   ------     ------     ------     -----
          Total................................  $532.9   $509.8     $(23.1)    $557.5     $24.6
                                                 ======   ======     ======     ======     =====
</Table>

COMMODITY PRICE RISK

     Our amended power purchase agreement and mirror power purchase agreement
meet the definition of derivatives under the provisions of SFAS No. 133, as
amended, and are carried at their estimated fair value. The fair value of these
agreements at March 31, 2003 was estimated considering the expected estimated
cash receipts and payments under these agreements using contractual prices under
these agreements compared to anticipated future power prices, discounted at a
risk-adjusted rate commensurate with the term of each contract and the credit
risk of the counterparty. Our estimates of the timing of cash receipts and
payments are based on the anticipated timing of power delivery under these
agreements. These estimates also consider the minimum and maximum energy
delivery requirements under those agreements. Estimates of the future prices of
power consider the forward pricing curve of the appropriate power delivery and
receipt points, and this curve

                                        11
<PAGE>

is derived from the actual prices observed in the market and pricing information
supplied by a third party. Changes in future prices impact the fair value of
these agreements.

     The sensitivity of the fair value of our power agreements to changes in
commodity prices is as follows:

<Table>
<Caption>
                                                             10% INCREASE          10% DECREASE
                                                          -------------------   -------------------
                                                  FAIR     FAIR     INCREASE     FAIR     INCREASE
                                                 VALUE    VALUE    (DECREASE)   VALUE    (DECREASE)
                                                 ------   ------   ----------   ------   ----------
                                                                   (IN MILLIONS)
<S>                                              <C>      <C>      <C>          <C>      <C>
Amended power purchase agreement...............  $474.0   $434.8     $(39.2)    $513.2     $ 39.2
Mirror power purchase agreement................    58.9     90.1       31.2       27.7      (31.2)
                                                 ------   ------     ------     ------     ------
          Total................................  $532.9   $524.9     $ (8.0)    $540.9     $  8.0
                                                 ======   ======     ======     ======     ======
</Table>

ITEM 4.  CONTROLS AND PROCEDURES

     Evaluation of Controls and Procedures. Under the supervision and with the
participation of management, including our principal executive officer and
principal financial officer, we have evaluated the effectiveness of the design
and operation of our disclosure controls and procedures (Disclosure Controls)
and internal controls (Internal Controls) within 90 days of the filing date of
this quarterly report pursuant to Rules 13a-15 and 15d-15 under the Securities
Exchange Act of 1934 (Exchange Act).

     Definition of Disclosure Controls and Internal Controls. Disclosure
Controls are our controls and other procedures that are designed to ensure that
information required to be disclosed by us in the reports that we file or submit
under the Exchange Act is recorded, processed, summarized and reported, within
the time periods specified under the Exchange Act. Disclosure Controls include,
without limitation, controls and procedures designed to ensure that information
required to be disclosed by us in the reports that we file under the Exchange
Act is accumulated and communicated to our management, including our principal
executive officer and principal financial officer, as appropriate to allow
timely decisions regarding required disclosure. Internal Controls are procedures
which are designed with the objective of providing reasonable assurance that (1)
our transactions are properly authorized; (2) our assets are safeguarded against
unauthorized or improper use; and (3) our transactions are properly recorded and
reported, all to permit the preparation of our financial statements in
conformity with generally accepted accounting principles.

     Limitations on the Effectiveness of Controls. Our management, including the
principal executive officer and principal financial officer, does not expect
that our Disclosure Controls and Internal Controls will prevent all error and
all fraud. A control system, no matter how well conceived and operated, can
provide only reasonable, not absolute, assurance that the objectives of the
control system are met. Further, the design of a control system must reflect the
fact that there are resource constraints, and the benefits of controls must be
considered relative to their costs. Because of the inherent limitations in all
control systems, no evaluation of controls can provide absolute assurance that
all control issues and instances of fraud, if any, within the company have been
detected. These inherent limitations include the realities that judgments in
decision-making can be faulty, and that breakdowns can occur because of simple
error or mistake. Additionally, controls can be circumvented by the individual
acts of some persons, by collusion of two or more people, or by management
override of the control. The design of any system of controls also is based in
part upon certain assumptions about the likelihood of future events, and there
can be no assurance that any design will succeed in achieving its stated goals
under all potential future conditions. Over time, controls may become inadequate
because of changes in conditions, or the degree of compliance with the policies
or procedures may deteriorate. Because of the inherent limitations in a
cost-effective control system, misstatements due to error or fraud may occur and
not be detected.

     No Significant Changes in Internal Controls. We have sought to determine
whether there were any "significant deficiencies" or "material weaknesses" in
our Internal Controls, or whether the company had identified any acts of fraud
involving personnel who have a significant role in our Internal Controls. This
information was important both for the controls evaluation generally and because
the principal executive officer and principal financial officer are required to
disclose that information to our Board and our

                                        12
<PAGE>

independent auditors and to report on related matters in this section of the
Quarterly Report. The principal executive officer and principal financial
officer note that, from the date of the controls evaluation to the date of this
Quarterly Report, there have been no significant changes in Internal Controls or
in other factors that could significantly affect Internal Controls, including
any corrective actions with regard to significant deficiencies and material
weaknesses.

     Effectiveness of Disclosure Controls. Based on the controls evaluation, our
principal executive officer and principal financial officer have concluded that,
subject to the limitations discussed above, the Disclosure Controls are
effective to ensure that material information relating to us is made known to
management, including the principal executive officer and principal financial
officer, particularly during the period when our periodic reports are being
prepared.

     Officer Certifications. The certifications from the principal executive
officer and principal financial officer required under Sections 302 and 906 of
the Sarbanes-Oxley Act of 2002 have been included herein, or as Exhibits to this
Quarterly Report, as appropriate.

                                        13
<PAGE>

                          PART II -- OTHER INFORMATION

ITEM 1.  LEGAL PROCEEDINGS

     None.

ITEM 2.  CHANGES IN SECURITIES AND USE OF PROCEEDS

     None.

ITEM 3.  DEFAULTS UPON SENIOR SECURITIES

     None.

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY-HOLDERS

     None.

ITEM 5.  OTHER INFORMATION

     None.

ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

a. Exhibits

     Each exhibit identified below is filed as part of this report. Exhibits not
incorporated by reference to a prior filing are designated by an "*"; all
exhibits not so designated are incorporated herein by reference to a prior
filing as indicated.

<Table>
<Caption>
EXHIBIT
NUMBER                           DESCRIPTION
-------                          -----------
<C>      <S>
 *99.A   Certification of Chief Executive Officer pursuant to 18
         U.S.C. Section 1350, as adopted pursuant to Section 906 of
         the Sarbanes-Oxley Act of 2002.
 *99.B   Certification of Chief Financial Officer pursuant to 18
         U.S.C. Section 1350, as adopted pursuant to Section 906 of
         the Sarbanes-Oxley Act of 2002.
</Table>

     Undertaking

          We hereby undertake, pursuant to Regulation S-K, Item 601(b),
     paragraph (4)(iii), to furnish to the United States Securities and Exchange
     Commission, upon request, all constituent instruments defining the rights
     of holders of our long-term debt not filed herewith for the reason that the
     total amount of securities authorized under any of such instruments does
     not exceed 10 percent of our total consolidated assets.

b. Reports on Form 8-K

     None.

                                        14
<PAGE>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this Report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                            CEDAR BRAKES II, L.L.C.

<Table>
<S>                                                         <C>
Date: May 15, 2003                                                      /s/ JOHN L. HARRISON
                                                            --------------------------------------------
                                                                          John L. Harrison
                                                               Senior Vice President, Chief Financial
                                                                              Officer,
                                                                   Treasurer and Class A Manager
                                                                   (Principal Financial Officer)

Date: May 15, 2003                                                       /s/ BRYAN E. SEAS
                                                            --------------------------------------------
                                                                           Bryan E. Seas
                                                                   Vice President and Controller
                                                                   (Principal Accounting Officer)
</Table>

                                        15
<PAGE>

                                 CERTIFICATION

I, Robert W. Baker, certify that:

     1. I have reviewed this quarterly report on Form 10-Q of Cedar Brakes II,
L.L.C.;

     2. Based on my knowledge, this quarterly report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to make
the statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this quarterly
report;

     3. Based on my knowledge, the financial statements, and other financial
information included in this quarterly report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the period presented in this quarterly report;

     4. The registrant's other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

          a) designed such disclosure controls and procedures to ensure that
             material information relating to the registrant is made known to us
             by others within those entities, particularly during the period in
             which this quarterly report is being prepared;

          b) evaluated the effectiveness of the registrant's disclosure controls
             and procedures as of a date within 90 days prior to the filing date
             of this quarterly report (the "Evaluation Date"); and

          c) presented in this quarterly report our conclusions about the
             effectiveness of the disclosure controls and procedures based on
             our evaluation as of the Evaluation Date;

     5. The registrant's other certifying officers and I have disclosed, based
on our most recent evaluation, to the registrant's auditors and the audit
committee of registrant's board of directors (or persons performing the
equivalent function):

          a) all significant deficiencies in the design or operation of internal
             controls which could adversely affect the registrant's ability to
             record, process, summarize and report financial data and have
             identified for the registrant's auditors any material weaknesses in
             internal controls; and

          b) any fraud, whether or not material, that involves management or
             other employees who have a significant role in the registrant's
             internal controls; and

     6. The registrant's other certifying officers and I have indicated in this
quarterly report whether or not there were significant changes in internal
controls or in other factors that could significantly affect internal controls
subsequent to the date of our most recent evaluation, including any corrective
actions with regard to significant deficiencies and material weaknesses.

Date: May 15, 2003

                                          /s/ ROBERT W. BAKER
                                          --------------------------------------
                                          Robert W. Baker
                                          President
                                          (Principal Executive Officer)
                                          Cedar Brakes II, L.L.C.
<PAGE>

                                 CERTIFICATION

I, John L. Harrison, certify that:

     1. I have reviewed this quarterly report on Form 10-Q of Cedar Brakes II,
L.L.C.;

     2. Based on my knowledge, this quarterly report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to make
the statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this quarterly
report;

     3. Based on my knowledge, the financial statements, and other financial
information included in this quarterly report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this quarterly report;

     4. The registrant's other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

          a) designed such disclosure controls and procedures to ensure that
             material information relating to the registrant is made known to us
             by others within those entities, particularly during the period in
             which this quarterly report is being prepared;

          b) evaluated the effectiveness of the registrant's disclosure controls
             and procedures as of a date within 90 days prior to the filing date
             of this quarterly report (the "Evaluation Date"); and

          c) presented in this quarterly report our conclusions about the
             effectiveness of the disclosure controls and procedures based on
             our evaluation as of the Evaluation Date;

     5. The registrant's other certifying officers and I have disclosed, based
on our most recent evaluation, to the registrant's auditors and the audit
committee of registrant's board of directors (or persons performing the
equivalent function):

          a) all significant deficiencies in the design or operation of internal
             controls which could adversely affect the registrant's ability to
             record, process, summarize and report financial data and have
             identified for the registrant's auditors any material weaknesses in
             internal controls; and

          b) any fraud, whether or not material, that involves management or
             other employees who have a significant role in the registrant's
             internal controls; and

     6. The registrant's other certifying officers and I have indicated in this
quarterly report whether or not there were significant changes in internal
controls or in other factors that could significantly affect internal controls
subsequent to the date of our most recent evaluation, including any corrective
actions with regard to significant deficiencies and material weaknesses.

Date: May 15, 2003

                                          /s/ JOHN L. HARRISON
                                          --------------------------------------
                                          John L. Harrison
                                          Senior Vice President,
                                          Chief Financial Officer,
                                          Treasurer and Class A Manager
                                          (Principal Financial Officer)
                                          Cedar Brakes II, L.L.C.
<PAGE>

                               INDEX TO EXHIBITS

     Each exhibit identified below is filed as part of this report. Exhibits not
incorporated by reference to a prior filing are designated by an "*"; all
exhibits not so designated are incorporated herein by reference to a prior
filing as indicated.

<Table>
<Caption>
EXHIBIT
NUMBER                             DESCRIPTION
-------                            -----------
<C>        <S>
 *99.A     Certification of Chief Executive Officer pursuant to 18
           U.S.C. Section 1350, as adopted pursuant to Section 906 of
           the Sarbanes-Oxley Act of 2002.
 *99.B     Certification of Chief Financial Officer pursuant to 18
           U.S.C. Section 1350, as adopted pursuant to Section 906 of
           the Sarbanes-Oxley Act of 2002.
</Table>