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                                                                    EXHIBIT 99.1

                                                                    NEWS RELEASE


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               CALPINE CORPORATION AND ENCAL ENERGY LTD. ANNOUNCE
                              COMPLETION OF MERGER

(CALGARY, ALBERTA, CANADA; SAN JOSE, CALIF., USA) - April 19, 2001 - Encal
Energy Ltd. ("Encal") (TSE:ENL; NYSE:ECA) and Calpine Corporation (NYSE:CPN)
announced today that the merger of the two companies has been completed.
Pursuant to the merger, Calpine issued approximately 16.6 million exchangeable
shares, with each share being exchangeable, at the shareholder's option, into
shares of Calpine common stock on a one-for-one basis. In addition, Calpine
assumed approximately $225 million in existing Encal debt. The exchangeable
shares will commence trading on The Toronto Stock Exchange on April 23, 2001
under the symbol CPX.

With the completion of the transaction, Calpine gains approximately 1.0 trillion
cubic feet equivalent of proved and probable natural gas reserves, net of
royalties. The transaction also provides access to firm natural gas
transportation capacity from western Canada to California and the eastern United
States, and an accomplished management team capable, together with Calpine's
existing management team, of leading Calpine's business expansion in Canada.

The transaction increases Calpine's net production to approximately 390 million
cubic feet natural gas equivalent per day in North America. Daily natural gas
production under the combined companies' control will be sufficient to fuel
approximately 2,300 megawatts of generation. With this transaction, Calpine's
proved and probable reserves will be approximately 1.7 trillion cubic feet of
natural gas equivalent, net of royalties.

Based in San Jose, Calif., Calpine Corporation is dedicated to providing
customers with reliable and competitively priced electricity. Calpine is focused
on clean, efficient, natural gas-fired generation and is the world's largest
producer of renewable geothermal energy. Calpine has launched the largest power
development program in North America. To date, the company has approximately
31,200 megawatts of base load capacity and 6,800 megawatts of peaking capacity
in operation, under construction, and in announced development in 28 states and
Canada. The company was founded in 1984 and is publicly traded on the New York
Stock Exchange under the symbol CPN. For more information about Calpine, visit
its Website at www.calpine.com.


THE MATTERS DISCUSSED IN THIS NEWS RELEASE MAY BE CONSIDERED "FORWARD LOOKING"
STATEMENTS WITHIN THE MEANING OF SECTION 27A OF THE SECURITIES AND EXCHANGE ACT
OF 1993, AS AMENDED, AND SECTION 21E OF THE SECURITIES EXCHANGE ACT OF 1934, AS
AMENDED. SUCH STATEMENTS INCLUDE DECLARATIONS REGARDING THE INTENT, BELIEF OR
CURRENT EXPECTATIONS OF ENCAL AND CALPINE AND THEIR MANAGEMENT. PROSPECTIVE
INVESTORS ARE CAUTIONED THAT ANY SUCH FORWARD-LOOKING STATEMENTS ARE NOT
GUARANTEES OF FUTURE PERFORMANCE AND INVOLVE A NUMBER OF RISKS AND UNCERTAINTIES
AND ACTUAL RESULTS COULD DIFFER MATERIALLY FROM THOSE INDICATED BY SUCH
FORWARD-LOOKING STATEMENTS. AMONG THE IMPORTANT FACTORS THAT COULD CAUSE RESULTS
TO DIFFER MATERIALLY FROM THOSE INDICATED BY SUCH FORWARD-LOOKING STATEMENTS ARE
(I) THAT THE INFORMATION IS OF A PRELIMINARY NATURE AND MAY BE SUBJECT TO
FURTHER ADJUSTMENTS, (II) RISKS ASSOCIATED WITH MERGERS INCLUDING THE ABILITY TO
INTEGRATE ENCAL AND CALPINE OPERATIONS, (III) CHANGES IN GOVERNMENT REGULATION,
(IV) GENERAL OPERATING RISKS, (V) THE DEPENDENCE ON THIRD PARTIES, INCLUDING
ENCAL SHAREHOLDERS, (VI) THE DEPENDENCE ON SENIOR MANAGEMENT, (VII) THE
SUCCESSFUL EXPLOITATION OF AN OIL OR GAS RESOURCE THAT ULTIMATELY DEPENDS UPON
THE GEOLOGY OF THE RESOURCE, THE TOTAL AMOUNT AND COST TO DEVELOP

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RECOVERABLE RESERVES, AND OPERATIONAL FACTORS RELATING TO THE EXTRACTION OF
NATURAL GAS, AND (VIII) OTHER RISKS IDENTIFIED FROM TIME TO TIME IN ENCAL'S
ANNUAL REPORT AND ANNUAL INFORMATION FORM FILED WITH THE CANADIAN REGULATORY
AUTHORITIES AND CALPINE'S REPORTS AND REGISTRATION STATEMENTS FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION.

For further information, please contact:

ENCAL ENERGY LTD.:
David D. Johnson, President and Chief Executive Officer
or Steven A. Allaire, Vice President Finance and Chief Financial Officer
Tel: (403) 750-3300 or fax (403) 266-2337 or E-Mail invrel@encal.com


CALPINE CORPORATION:
Investor Relations: Rick Barraza: Tel: (408) 995-5115, X1125
Media Relations: Bill Highlander: Tel: (408) 995-5115, X1244