<ARTICLE> UT
<CIK> 0000023426
<NAME> THE CONNECTICUT LIGHT AND POWER COMPANY AND SUBSIDIARIES
<MULTIPLIER>1,000

                           
<PERIOD-TYPE>                 YEAR
<FISCAL-YEAR-END>                                  DEC-31-1999
<PERIOD-END>                                       DEC-31-1999
<BOOK-VALUE>                                          PER-BOOK
<TOTAL-NET-UTILITY-PLANT>                            1,772,650
<OTHER-PROPERTY-AND-INVEST>                            607,964
<TOTAL-CURRENT-ASSETS>                                 317,285
<TOTAL-DEFERRED-CHARGES>                             2,600,385
<OTHER-ASSETS>                                               0
<TOTAL-ASSETS>                                       5,298,284
<COMMON>                                               122,229
<CAPITAL-SURPLUS-PAID-IN>                              665,598
<RETAINED-EARNINGS>                                    153,254
<TOTAL-COMMON-STOCKHOLDERS-EQ>                         941,497
<PREFERRED-MANDATORY>                                   79,789
<PREFERRED>                                            116,200
<LONG-TERM-DEBT-NET>                                 1,241,051
<SHORT-TERM-NOTES>                                     101,700
<LONG-TERM-NOTES-PAYABLE>                                    0
<COMMERCIAL-PAPER-OBLIGATIONS>                               0
<LONG-TERM-DEBT-CURRENT-PORT>                          159,005
<PREFERRED-STOCK-CURRENT>                               19,750
<CAPITAL-LEASE-OBLIGATIONS>                             50,969
<LEASES-CURRENT>                                        93,431
<OTHER-ITEMS-CAPITAL-AND-LIAB>                       2,495,308
<TOT-CAPITALIZATION-AND-LIAB>                        5,298,284
<GROSS-OPERATING-REVENUE>                            2,452,855
<INCOME-TAX-EXPENSE>                                    85,138
<OTHER-OPERATING-EXPENSES>                           2,156,047
<TOTAL-OPERATING-EXPENSES>                           2,278,106
<OPERATING-INCOME-LOSS>                                174,749
<OTHER-INCOME-NET>                                     (86,787)
<INCOME-BEFORE-INTEREST-EXPEN>                         124,883
<TOTAL-INTEREST-EXPENSE>                               138,451
<NET-INCOME>                                           (13,568)
<PREFERRED-STOCK-DIVIDENDS>                             12,832
<EARNINGS-AVAILABLE-FOR-COMM>                          (26,400)
<COMMON-STOCK-DIVIDENDS>                                     0
<TOTAL-INTEREST-ON-BONDS>                              127,533
<CASH-FLOW-OPERATIONS>                                 299,427
<EPS-BASIC>                                             0.00
<EPS-DILUTED>                                             0.00