SECURITIES AND EXCHANGE COMMISSION
                                 Washington, DC
                                   FORM U-6B-2
                           Certificate of Notification

     Filed by a registered  holding  company or subsidiary  thereof  pursuant to
Rule U-20-(d) [Reg.  Section 250.20, P. 36,652] or U-47 [Reg. Section 250.47, P.
36,620] adopted under the Public Utility Holding Company Act of 1935.

Certificate is filed by: Ameren Corporation (AMC), Ameren Services (AMS), Ameren
Energy (AME), CIPSCO Investment Company (CIC), Union Electric Development
Corporation (UEDC), Ameren Energy Communications (AEC), Ameren ERC (ERC), Ameren
Energy Resources Company (AER), Illinois Material Supply Co. (IMS), Ameren
Energy Generating Company (AEG), Ameren Energy Marketing Company (AEM), Ameren
Energy Fuels and Services Company (AFS), Ameren Energy Development Company (AED)
and Ameren Development Company (ADC).

     This  certificate  is notice that the above named  companies  have  issued,
renewed or guaranteed the security or securities  described  herein which issue,
renewal or guaranty was exempted from the  provisions of Section 6(a) of the Act
and was neither  the subject of a  declaration  or  application  on Form U-1 nor
included within the exemption  provided by Rule U-48 [Reg.  Section  250.48,  P.
36,621].

     1.  Type of securities ("draft", "promissory note"):  Promissory Notes.
     2.  Issue, renewal or guaranty:  Issue.
     3.  Principal amount of each security: A non-utility money pool allows
         non-utility subsidiaries of AMC to contribute and/or borrow funds
         without going to an external provider or creditor. The principal amount
         is limited only by cash available. Funds are borrowed and/or repaid
         daily as cash needs dictate. See Attachments A (Contributions to the
         Non-Utility Money Pool) and B (Loans from Non-Utility Money Pool) for
         daily outstanding contributions and loans.
     4.  Rate of interest per annum of each security:  Rates varied daily along
         with money market rates, as defined in the Agreement.  (See Attachment
         C for daily rates.)
     5.  Date of issue, renewal, or guaranty of each security:  Various.
         (See Attachments A and B.)
     6.  If renewal of security, give date of original issue:  Not applicable.
     7.  Date of maturity of each security:  All loans were made for one day, or
         in the case of Friday borrowings, until the next work day, and repaid
         or rolled over the next business days, as need dictated.  (See attached
         Attachments A and B.)
     8.  Name of the person to whom each security was issued, renewed or
         guaranteed:  Not applicable.
     9.  Collateral given with each security:  None.
    10.  Consideration given for each security:  None, other than interest
         accrued.
    11.  Application of proceeds of each security:
         a)  Loaned as needed to AME.  (See Attachment B)
         b)  Loaned as needed to AEC.  (See Attachment B)
         c)  Loaned as needed to ERC.  (See Attachment B)
         d)  Loaned as needed to AER.  (See Attachment B)
         e)  Loaned as needed to AEG.  (See Attachment B)
         f)  Loaned as needed to IMS.  (See Attachment B)
         g)  Loaned as needed to AED.  (See Attachment B)
         h)  Loaned as needed to AEM.  (See Attachment B)
         i)  Loaned as needed to AFS.  (See Attachment B)
         j)  Loaned as needed to ADC.  (See Attachment B)






    12.  Indicate by a check after the applicable statement below whether the
         issue, renewal or guaranty of each security was exempt from the
         provisions of Section 6(a) because of:
         a)  the provisions contained in the first sentence of Section 6(b):
             Not applicable.
         b)  the provisions contained in the fourth sentence of Section 6(b):
             Not applicable.
         c)  the provisions contained in any rule of the Commission other than
             Rule U-48:  [X].
    13.  If the security or securities were exempt from the provisions of
         Section 6(a) by virtue of the first sentence of Section 6(b), give the
         figures which indicate that the security or securities aggregate
         (together with all other than outstanding notes and drafts of a
         maturity of nine months or less, exclusive of days of grace, as to
         which such company is primarily or secondarily liable) not more than 5
         percentum of the principal amount and par value of the other securities
         of such company then outstanding. (Demand notes, regardless of how long
         they may have been outstanding, shall be considered as maturing in not
         more than nine months for purposes of the exemption from Section 6(a)
         of the Act granted by the first sentence of Section 6(b)): Not
         applicable.
    14.  If the security or securities are exempt from the provisions of Section
         6(a) because of the fourth sentence of Section 6(b), name the security
         outstanding on January 1, 1935, pursuant to the terms of which the
         security or securities herein described have been issued. Not
         applicable.
    15.  If the security or securities are exempt from the provisions of Section
         6(a) because of any rule of the Commission other than Rule U-48 [Reg.
         ss. 250.48, P. 36,621] designate the rule under which exemption is
         claimed.  Rule 52.




                                           /s/ Jerre E. Birdsong
                                       --------------------------------
                                               Jerre E. Birdsong
                                         Vice President and Treasurer
                                              Ameren Corporation

Dated:  May 30, 2002



Attachment A

         Contributions to the Non-Utility Money Pool Outstanding Amounts

                           (Thousands of Dollars)
                                                                                                   
         Date                     AMC                AEM                   CIC                  UEDC                Total
        Beg Bal                 397,220             12,900                   700                2,550              413,370
       01/01/2002               397,220             12,900                   700                2,550              413,370
       01/02/2002               395,120             12,900                   700                2,550              411,270
       01/03/2002               395,420             12,900                   700                2,550              411,570
       01/04/2002               398,920             12,900                   700                2,550              415,070
       01/05/2002               398,920             12,900                   700                2,550              415,070
       01/06/2002               398,920             12,900                   700                2,550              415,070
       01/07/2002               400,320             12,900                   700                2,550              416,470
       01/08/2002               401,120             12,900                   700                2,250              416,970
       01/09/2002               401,520             12,900                   700                2,250              417,370
       01/10/2002               406,570             12,900                   700                2,250              422,420
       01/11/2002               410,070             12,800                   700                2,250              425,820
       01/12/2002               410,070             12,800                   700                2,250              425,820
       01/13/2002               410,070             12,800                   700                2,250              425,820
       01/14/2002               410,970             12,800                   700                2,250              426,720
       01/15/2002               416,870             12,000                   700                2,250              431,820
       01/16/2002               416,970             12,000                   700                2,250              431,920
       01/17/2002               416,070             13,300                   700                2,250              432,320
       01/18/2002               420,520             13,700                   250                2,250              436,720
       01/19/2002               420,520             13,700                   250                2,250              436,720
       01/20/2002               420,520             13,700                   250                2,250              436,720
       01/21/2002               420,520             13,700                   250                2,250              436,720
       01/22/2002               423,420             14,600                   250                2,250              440,520
       01/23/2002               428,720             15,000                   250                1,250              445,220
       01/24/2002               433,020             18,500                 1,050                1,250              453,820
       01/25/2002               442,370             18,500                 1,050                1,250              463,170
       01/26/2002               442,370             18,500                 1,050                1,250              463,170
       01/27/2002               442,370             18,500                 1,050                1,250              463,170
       01/28/2002               455,420             23,150                 1,050                1,250              480,870
       01/29/2002               457,020             23,050                 1,050                1,250              482,370
       01/30/2002               467,270             22,100                 1,050                1,250              491,670
       01/31/2002               442,570              8,900                 1,050                1,250              453,770
       02/01/2002               444,470              8,900                 1,050                1,250              455,670
       02/02/2002               444,470              8,900                 1,050                1,250              455,670
       02/03/2002               444,470              8,900                 1,050                1,250              455,670
       02/04/2002               446,670              8,900                 1,050                1,250              457,870
       02/05/2002               415,570                  0                 1,050                1,250              417,870
       02/06/2002               416,970                  0                 1,050                1,250              419,270
       02/07/2002               418,070                  0                 1,050                1,250              420,370
       02/08/2002               421,870                  0                 1,050                1,250              424,170
       02/09/2002               421,870                  0                 1,050                1,250              424,170
       02/10/2002               421,870                  0                 1,050                1,250              424,170
       02/11/2002               429,470                  0                 1,050                1,250              431,770
       02/12/2002               442,220                  0                 1,050                1,250              444,520
       02/13/2002               451,370                  0                 1,050                1,250              453,670
       02/14/2002               453,570                  0                 1,050                1,250              455,870
       02/15/2002               446,270                  0                 1,050                1,250              448,570
       02/16/2002               446,270                  0                 1,050                1,250              448,570
       02/17/2002               446,270                  0                 1,050                1,250              448,570
       02/18/2002               446,270                  0                 1,050                1,250              448,570
       02/19/2002               447,370                  0                 1,050                1,250              449,670
       02/20/2002               446,870                  0                 1,050                1,250              449,170
       02/21/2002               445,420                  0                 1,050                1,250              447,720
       02/22/2002               456,920                  0                 1,050                1,250              459,220
       02/23/2002               456,920                  0                 1,050                1,250              459,220
       02/24/2002               456,920                  0                 1,050                1,250              459,220
       02/25/2002               464,120                  0                 1,050                1,250              466,420
       02/26/2002               436,720                  0                 1,050                1,250              439,020
       02/27/2002               432,720                  0                 1,050                1,250              435,020
       02/28/2002               434,920                  0                 1,050                1,250              437,220
       03/01/2002               436,120                  0                 1,050                1,250              438,420
       03/02/2002               436,120                  0                 1,050                1,250              438,420
       03/03/2002               436,120                  0                 1,050                1,250              438,420
       03/04/2002               437,920                  0                 1,050                1,250              440,220
       03/05/2002               439,020                  0                 1,050                1,250              441,320
       03/06/2002               439,170                  0                 1,050                1,250              441,470
       03/07/2002               437,420                  0                 1,050                1,250              439,720
       03/08/2002               435,170                  0                 1,050                1,250              437,470
       03/09/2002               435,170                  0                 1,050                1,250              437,470
       03/10/2002               435,170                  0                 1,050                1,250              437,470
       03/11/2002               436,620                  0                 1,050                1,250              438,920
       03/12/2002               437,470                  0                 1,050                1,250              439,770
       03/13/2002               441,970                  0                 1,050                1,250              444,270
       03/14/2002               445,170                  0                 1,050                1,250              447,470
       03/15/2002               448,670                  0                 1,050                1,250              450,970
       03/16/2002               448,670                  0                 1,050                1,250              450,970
       03/17/2002               448,670                  0                 1,050                1,250              450,970
       03/18/2002               456,870                  0                 2,050                1,250              460,170
       03/19/2002               458,270                  0                 2,050                1,250              461,570
       03/20/2002               458,370                  0                 2,050                1,150              461,570
       03/21/2002               455,670                  0                 2,050                1,150              458,870
       03/22/2002               464,490                  0                 2,050                1,150              467,690
       03/23/2002               464,490                  0                 2,050                1,150              467,690
       03/24/2002               464,490                  0                 2,050                1,150              467,690
       03/25/2002               469,940                  0                 2,050                1,150              473,140
       03/26/2002               466,240              1,950                 2,050                1,150              471,390
       03/27/2002               439,290                  0                 2,050                1,150              442,490
       03/28/2002               447,690                  0                   950                1,150              449,790
       03/29/2002               447,690                  0                   950                1,150              449,790
       03/30/2002               447,690                  0                   950                1,150              449,790
       03/31/2002               447,690                  0                   950                1,150              449,790




Attachment B

                        Loans From Non-Utility Money Pool

                             (Thousands of Dollars)

                                                                                          

   Date       AME       AEG      ERC      IMS          AEC           AED           AEM      AER       AFS      ADC          TOTAL
  Beg Bal     4970     61700    15690    17060        23050         277175            0     5350      7325     1050         413370
01/01/2002    4970     61700    15690    17060        23050         277175            0     5350      7325     1050         413370
01/02/2002    4970     63300    12390    17060        23050         277275            0     5350      6825     1050         411270
01/03/2002    4970     63600    12390    17060        23050         277275            0     5350      6825     1050         411570
01/04/2002    4970     64300    12390    17060        23050         280275            0     5350      6625     1050         415070
01/05/2002    4970     64300    12390    17060        23050         280275            0     5350      6625     1050         415070
01/06/2002    4970     64300    12390    17060        23050         280275            0     5350      6625     1050         415070
01/07/2002    5070     65000    12390    17060        23050         280875            0     5350      6625     1050         416470
01/08/2002    5070     65200    12390    17060        23050         281175            0     5350      6625     1050         416970
01/09/2002    5270     66600    12390    17060        23050         281175            0     5350      5425     1050         417370
01/10/2002    5270     70800    12390    17060        23050         281175            0     5350      6275     1050         422420
01/11/2002    5270     72300    12390    17960        23050         282175            0     5350      6275     1050         425820
01/12/2002    5270     72300    12390    17960        23050         282175            0     5350      6275     1050         425820
01/13/2002    5270     72300    12390    17960        23050         282175            0     5350      6275     1050         425820
01/14/2002    5270     73600    11890    18060        23050         282175            0     5350      6275     1050         426720
01/15/2002    8370     74700    11890    18860        23050         282275            0     5350      6275     1050         431820
01/16/2002    8370     75400    11890    18860        23050         282275            0     5350      5675     1050         431920
01/17/2002    8370     76100    11890    18560        23050         282475            0     5350      5475     1050         432320
01/18/2002   11970     76500    11890    18560        23250         283375            0     5350      4775     1050         436720
01/19/2002   11970     76500    11890    18560        23250         283375            0     5350      4775     1050         436720
01/20/2002   11970     76500    11890    18560        23250         283375            0     5350      4775     1050         436720
01/21/2002   11970     76500    11890    18560        23250         283375            0     5350      4775     1050         436720
01/22/2002   11970     77700    11890    18560        23250         283375            0     5350      7375     1050         440520
01/23/2002   11970     79900    11890    20960        23250         283375            0     5350      7475     1050         445220
01/24/2002   11970     82700    11890    20960        23250         283375            0     5350     13275     1050         453820
01/25/2002   11970     87400    11890    20960        23250         283425            0     5350     17875     1050         463170
01/26/2002   11970     87400    11890    20960        23250         283425            0     5350     17875     1050         463170
01/27/2002   11970     87400    11890    20960        23250         283425            0     5350     17875     1050         463170
01/28/2002   11970    101300    11890    20960        23250         283425            0     5350     21175     1550         480870
01/29/2002   11970    102600    11890    21160        23250         283425            0     5350     21175     1550         482370
01/30/2002   16070    106000    11890    21260        23250         284025            0     5350     22275     1550         491670
01/31/2002   16170     68600    11890    21260        23250         284625            0     5350     21075     1550         453770
02/01/2002   16270     70600    11890    21260        23250         284725            0     5350     20775     1550         455670
02/02/2002   16270     70600    11890    21260        23250         284725            0     5350     20775     1550         455670
02/03/2002   16270     70600    11890    21260        23250         284725            0     5350     20775     1550         455670
02/04/2002   16270     73300    11890    21260        23250         284825            0     5350     20175     1550         457870
02/05/2002    6570    171600    12490    21260        23250         145225         8200     8650     19075     1550         417870
02/06/2002    6570    172950    12490    21310        23250         145225         8200     8650     19075     1550         419270
02/07/2002    6570    174350    12490    20810        23250         145425         8200     8650     19075     1550         420370
02/08/2002    6570    178150    12490    20810        23250         145425         8200     8650     19075     1550         424170
02/09/2002    6570    178150    12490    20810        23250         145425         8200     8650     19075     1550         424170
02/10/2002    6570    178150    12490    20810        23250         145425         8200     8650     19075     1550         424170
02/11/2002    6570    182250    12490    20810        23250         147825         8200     8650     20175     1550         431770
02/12/2002    6570    185450    12490    20910        23250         148475         8200     8650     28975     1550         444520
02/13/2002   10570    189050    12490    21110        23400         149075         8800     8650     28975     1550         453670
02/14/2002   10570    190050    12490    22310        23400         149075         8800     8650     28975     1550         455870
02/15/2002   10870    194650    11890    22310        23400         149075         8800     8650     17375     1550         448570
02/16/2002   10870    194650    11890    22310        23400         149075         8800     8650     17375     1550         448570
02/17/2002   10870    194650    11890    22310        23400         149075         8800     8650     17375     1550         448570
02/18/2002   10870    194650    11890    22310        23400         149075         8800     8650     17375     1550         448570
02/19/2002   10870    195900    11890    22310        23400         149075         8950     8650     17075     1550         449670
02/20/2002   10870    199000    11890    22310        23400         149075         5200     8650     17225     1550         449170
02/21/2002   10870    199500    11890    22310        23400         149075         3250     8650     17225     1550         447720
02/22/2002   10070    202000    11890    22310        23400         152875         1450     8650     25025     1550         459220
02/23/2002   10070    202000    11890    22310        23400         152875         1450     8650     25025     1550         459220
02/24/2002   10070    202000    11890    22310        23400         152875         1450     8650     25025     1550         459220
02/25/2002   10070    206200    11890    22310        23400         152875          850     8650     28625     1550         466420
02/26/2002    7470    164700    12390    22310        23500         152175        17150     8650     29125     1550         439020
02/27/2002    7470    165000    12390    22410        23500         152175        13250     8650     28625     1550         435020
02/28/2002    7770    167100    12390    22510        23500         152175        13350     8650     28225     1550         437220
03/01/2002    7770    169200    12390    22610        23500         152175        13350     8650     27225     1550         438420
03/02/2002    7770    169200    12390    22610        23500         152175        13350     8650     27225     1550         438420
03/03/2002    7770    169200    12390    22610        23500         152175        13350     8650     27225     1550         438420
03/04/2002    8170    170400    12390    22610        23500         152375        13350     8650     27225     1550         440220
03/05/2002    8170    171400    12390    22610        23500         152475        13350     8650     27225     1550         441320
03/06/2002    8170    171800    12390    22360        23500         152475        13350     8650     27225     1550         441470
03/07/2002    8170    172300    12390    23560        23500         152575         9550     8650     27475     1550         439720
03/08/2002    8170    174000    10890    23710        23500         152575         9550     8650     24875     1550         437470
03/09/2002    8170    174000    10890    23710        23500         152575         9550     8650     24875     1550         437470
03/10/2002    8170    174000    10890    23710        23500         152575         9550     8650     24875     1550         437470
03/11/2002    8170    175100    10890    23760        23500         152575         9850     8650     24875     1550         438920
03/12/2002    8170    180400    10890    24110        23500         152675         9850     8650     19975     1550         439770
03/13/2002   11970    181300    10890    24110        23650         153275        10050     8750     18725     1550         444270
03/14/2002   11970    182000    10890    23810        23650         155875        10050     8750     18925     1550         447470
03/15/2002   12970    183450    10890    23810        23650         155875        10600     8750     19425     1550         450970
03/16/2002   12970    183450    10890    23810        23650         155875        10600     8750     19425     1550         450970
03/17/2002   12970    183450    10890    23810        23650         155875        10600     8750     19425     1550         450970
03/18/2002   12970    192650    10890    23810        23650         155875        10600     8750     19425     1550         460170
03/19/2002   12970    193650    10890    24010        23650         155975        10600     8750     19525     1550         461570
03/20/2002   12970    195650    10890    24010        23650         155975         9000     8750     19125     1550         461570
03/21/2002   12970    195850    10890    24010        23650         155975         6350     8750     18875     1550         458870
03/22/2002   12970    200420    10890    23710        23650         156225         3250     8750     26275     1550         467690
03/23/2002   12970    200420    10890    23710        23650         156225         3250     8750     26275     1550         467690
03/24/2002   12970    200420    10890    23710        23650         156225         3250     8750     26275     1550         467690
03/25/2002   13070    203970    10890    24010        23650         156225         2500     8750     28525     1550         473140
03/26/2002   13070    204720    10890    24010        23650         156225            0     8750     28525     1550         471390
03/27/2002    8770    166920    11490    22660        23650         158525        14700     8900     25325     1550         442490
03/28/2002    9070    170920    11490    18660        23650         164525        14800     8900     26225     1550         449790
03/29/2002    9070    170920    11490    18660        23650         164525        14800     8900     26225     1550         449790
03/30/2002    9070    170920    11490    18660        23650         164525        14800     8900     26225     1550         449790
03/31/2002    9070    170920    11490    18660        23650         164525        14800     8900     26225     1550         449790


Attachment C

Calculates net interest on contributors and borrowers

      01/01/2002                  1.8690%
      01/02/2002                  1.8662%
      01/03/2002                  1.8649%
      01/04/2002                  1.8619%
      01/05/2002                  1.8619%
      01/06/2002                  1.8619%
      01/07/2002                  1.8616%
      01/08/2002                  1.8566%
      01/09/2002                  1.8756%
      01/10/2002                  1.8744%
      01/11/2002                  1.8628%
      01/12/2002                  1.8628%
      01/13/2002                  1.8628%
      01/14/2002                  1.8363%
      01/15/2002                  1.8297%
      01/16/2002                  1.8171%
      01/17/2002                  1.7984%
      01/18/2002                  1.7974%
      01/19/2002                  2.7344%
      01/20/2002                  1.7974%
      01/21/2002                  1.7974%
      01/22/2002                  1.8078%
      01/23/2002                  1.8144%
      01/24/2002                  2.7344%
      01/25/2002                  2.7010%
      01/26/2002                  2.7010%
      01/27/2002                  2.7010%
      01/28/2002                  2.6841%
      01/29/2002                  2.6747%
      01/30/2002                  2.6490%
      01/31/2002                  2.7007%
      02/01/2002                  2.6957%
      02/02/2002                  2.6957%
      02/03/2002                  2.6957%
      02/04/2002                  2.6847%
      02/05/2002                  2.7487%
      02/06/2002                  2.7424%
      02/07/2002                  2.7460%
      02/08/2002                  2.7129%
      02/09/2002                  2.7129%
      02/10/2002                  2.7129%
      02/11/2002                  2.6992%
      02/12/2002                  2.6813%
      02/13/2002                  2.6613%
      02/14/2002                  2.6828%
      02/15/2002                  2.7144%
      02/16/2002                  2.7144%
      02/17/2002                  2.7144%
      02/18/2002                  2.7144%
      02/19/2002                  2.6636%
      02/20/2002                  2.6888%
      02/21/2002                  2.6904%
      02/22/2002                  2.6636%
      02/23/2002                  2.6636%
      02/24/2002                  2.6636%
      02/25/2002                  2.6504%
      02/26/2002                  2.7321%
      02/27/2002                  2.7439%
      02/28/2002                  2.7714%
      03/01/2002                  2.7424%
      03/02/2002                  2.7424%
      03/03/2002                  2.7424%
      03/04/2002                  8.2623%
      03/05/2002                  8.3318%
      03/06/2002                  8.4283%
      03/07/2002                  8.5963%
      03/08/2002                  8.5370%
      03/09/2002                  8.5370%
      03/10/2002                  8.5370%
      03/11/2002                  8.5713%
      03/12/2002                  8.5296%
      03/13/2002                  8.6733%
      03/14/2002                  8.7974%
      03/15/2002                  8.5428%
      03/16/2002                  8.5428%
      03/17/2002                  8.5428%
      03/18/2002                  8.4550%
      03/19/2002                  8.8399%
      03/20/2002                  8.8399%
      03/21/2002                  8.8399%
      03/22/2002                  8.8399%
      03/23/2002                  8.8399%
      03/24/2002                  8.8399%
      03/25/2002                  8.8399%
      03/26/2002                  8.8399%
      03/27/2002                  8.8399%
      03/28/2002                  7.9161%
      03/29/2002                  7.9161%
      03/30/2002                  7.9161%
      03/31/2002                  7.9161%