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

SCHEDULE 13G
Under the Securities Exchange Act of 1934
(AMENDMENT NO.4)*
Calpine Corporation

(NAME OF ISSUER)

Common Stock

(TITLE OF CLASS OF SECURITIES)

131347106

(CUSIP NUMBER)

(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
/X/ Rule 13d-1(b)
/ / Rule 13d-1(c)
/ / Rule 13d-1(d)
* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP NO.
   131347106
--------------

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1    NAME OF REPORTING PERSON.
         Hartford Capital Appreciation HLS Fund, Inc.

     S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
     (entities only)            22-2481744

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2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
     (see instructions)

         (a) [     ]
         (b) [     ]

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3    SEC USE ONLY

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4    CITIZENSHIP OR PLACE OF ORGANIZATION
                         Maryland

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 NUMBER OF SHARES            5    SOLE VOTING POWER
 BENEFICIALLY
 OWNED BY                    --------------------------------------------------
 EACH REPORTING              6    SHARED VOTING POWER
 PERSON WITH:
                             --------------------------------------------------
                             7    SOLE DISPOSITIVE POWER

                             --------------------------------------------------
                             8    SHARED DISPOSITIVE POWER

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9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

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10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see
     instructions)

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11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

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12   TYPE OF REPORTING PERSON (see instructions)
                       IV
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                                 Page 2 of 5	

CUSIP NO.
   131347106
--------------

Item 1(a).   Name of Issuer:
                   Calpine Corporation
Item 1(b).   Address of Issuer's Principal Executive Offices:
                   50 West San Fernando Street
                   San Jose, CA  95113

Item 2(a).   Name of Person(s) Filing:
                   Hartford Capital Appreciation HLS Fund, Inc.

Item 2(b).   Address of Principal Business Office or, if none, residence:
                   200 Hopmeadow Street
                   Simsbury, CT  06089

Item 2(c).   Citizenship:
                   Maryland

Item 2(d).   Title of Class of Securities:
                   Common Stock

Item 2(e).   CUSIP Number:
                   131347106

Item 3.  If this statement is filed pursuant to Sections 240.13d-1(b) or
         240.13d-2(b) or (c), check whether the person filing is a:

         (a) / / Broker or Dealer registered under Section 15 of the Act
                 (15 U.S.C. 78o).

         (b) / / Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c).

         (c) / / Insurance Company as defined in Section 3(a)(19) of the Act
                 (15 U.S.C. 78c).

         (d) /X/ Investment Company registered under Section 8 of the Investment
                 Company Act of 1940 (15 U.S.C. 80a-8).

                                 Page 3 of 5	

CUSIP NO.
   131347106
--------------

         (e) / / An investment adviser in accordance with Section
                 240.13d-1(b)(1)(ii)(E);

         (f) / / An employee benefit plan or endowment fund in accordance with
                 Section 240.13d-1(b)(1)(ii)(F);

         (g) / / A parent holding company or control person in accordance with
                 Section 240.13d-1(b)(1)(ii)(G);

         (h) / / A savings association as defined in Section 3(b) of the Federal
                 Deposit Insurance Act (12 U.S.C. 1813);

         (i) / / A church plan that is excluded from the definition of an
                 investment company under Section 3(c)(14) of the Investment
                 Company Act of 1940 (15 U.S.C. 80a-3);

         (j) / / Group, in accordance with Section 240.13d-1(b)(1)(ii)(J).

Item 4.  Ownership

         Provide the following information regarding the aggregate number and
         percentage of the class of securities of the issuer identified in
         Item 1.

         (a) Amount Beneficially Owned
                                       -----------

         (b) Percent of Class
                                       -----------

         (c) Number of shares as to which the person has:

             (i)   sole power to vote or to direct the vote

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

             (ii)  shared power to vote or to direct the vote

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

             (iii) sole power to dispose or to direct the
                   disposition of

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

             (iv)  shared power to dispose or to direct the
                   disposition of

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

                                 Page 4 of 5	

CUSIP NO.
   131347106
--------------

Item 5.  Ownership of Five Percent or Less of a Class:

         If this statement is being filed to report the fact that as of the date
         hereof the reporting person has ceased to be the beneficial owner of
         more than five percent of the class of securities, check the
         following:  /X/

Item 6.  Ownership of More than Five Percent on behalf of Another Person: N/A

Item 7.  Identification and Classification of the Subsidiary which Acquired
         the Security being Reported on by the Parent Holding Company: N/A

Item 8.  Identification and Classification of Members of the Group: N/A

Item 9.  Notice of Dissolution of Group: N/A

Item 10. Certification:

         By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired and are held in the
ordinary course of business and were not acquired and are not held for the
purpose of or with the effect of changing or influencing the control of the
issuer of the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.

         SIGNATURE

         After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

                   DATE:   February 12, 2001
                           -----------------

                        Hartford Capital Appreciation HLS Fund, Inc.

                   BY:  /s/ David M. Znamierowski
                        -------------------------
                        David M. Znamierowski
                        President

                                 Page 5 of 5