Exhibit 99.04 UNAUDITED PRO FORMA FINANCIAL INFORMATION The following unaudited pro forma financial information adjusts the historical consolidated balance sheets and statements of income of the Company and WEC's utility subsidiary, Wisconsin Electric Power Company (referred to herein as WE) after giving effect to the proposed business combination transaction (the Transaction) to form Primergy and a new subsidiary structure. The unaudited pro forma combined condensed balance sheets at December 31, 1996 give effect to the Transaction as if it had occurred on that date. The unaudited pro forma combined condensed statements of income for the periods ended December 31, 1996, 1995, and 1994, give effect to the Transaction as if it had occurred at January 1, 1994. These statements are prepared on the basis of accounting for the Transaction as a pooling of interests and are based on the assumptions set forth in the notes thereto. The following pro forma financial information has been prepared from, and should be read in conjunction with, the historical consolidated financial statements and related notes thereto of the Company and WE. The following information is not necessarily indicative of the financial position or operating results that would have occurred had the Transaction been consummated on the date, or at the beginning of the periods, for which the Transaction is being given effect nor is it necessarily indicative of future operating results or financial position. Completion of the Transaction is subject to numerous conditions, many of which are beyond NSP's control. Wisconsin Energy Company Pro Forma Combined Condensed Information The pro forma financial information combines the historical financial statements of the Company and WE after giving effect to the Transaction, including the merger of the Company into Wisconsin Energy Company and the transfer of certain Company gas distribution properties to New NSP. WISCONSIN ENERGY COMPANY * UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENTS OF INCOME TWELVE MONTHS ENDED DECEMBER 31, 1996 (In thousands) WE The Company Pro Forma Pro Forma As Reported As Reported Adjustments Combined Utility Operating Revenues Electric $1 393 270 $377 073 $1 770 343 Gas 364 875 88 756 453 631 Steam 15 675 15 675 Total Operating Revenues 1 773 820 465 829 2 239 649 Utility Operating Expenses Electric production- fuel and purchased power 331 867 178 657 510 524 Cost of gas sold and transported 234 254 58 347 292 601 Other operation 391 520 77 851 469 371 Maintenance 103 046 19 617 122 663 Depreciation and amortization 202 796 35 731 238 527 Taxes other than income taxes 77 866 14 332 92 198 Income taxes 126 627 24 688 151 315 Total Operating Expenses 1 467 976 409 223 1 877 199 Utility Operating Income 305 844 56 606 362 450 Other Income (Expenses) 11 746 1 016 12 762 Income Before Interest Charges and Preferred Dividends 317 590 57 622 375 212 Interest Charges 106 275 18 925 125 200 Net Income 211 315 38 697 250 012 Preferred Stock Dividend Requirement 1 203 1 203 Earnings Available for Common Stockholder $ 210 112 $ 38 697 $ 248 809 See accompanying notes to unaudited pro forma combined financial statements. * In connection with the business combinations, WE will be renamed Wisconsin Energy Company Note: Earnings per share of common stock are not applicable because the Wisconsin Energy Company common stock will be owned by Primergy. WISCONSIN ENERGY COMPANY * UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENTS OF INCOME TWELVE MONTHS ENDED DECEMBER 31, 1995 (In thousands) WE The Company Pro Forma Pro Forma As Reported As Reported Adjustments Combined Utility Operating Revenues Electric $1 437 480 $381 040 $1 818 520 Gas 318 262 78 058 396 320 Steam 14 742 14 742 Total Operating Revenues 1 770 484 459 098 2 229 582 Utility Operating Expenses Electric production- fuel and purchased power 345 387 178 446 523 833 Cost of gas sold and transported 188 764 52 356 241 120 Other operation 395 242 79 472 474 714 Maintenance 112 400 20 780 133 180 Depreciation and amortization 183 876 33 097 216 973 Taxes other than income taxes 74 765 14 109 88 874 Income taxes 141 029 24 662 165 691 Total Operating Expenses 1 441 463 402 922 1 844 385 Utility Operating Income 329 021 56 176 385 197 Other Income (Expenses) 21 272 2 143 23 415 Income Before Interest Charges and Preferred Dividends 350 293 58 319 408 612 Interest Charges 109 625 19 102 128 727 Net Income 240 668 39 217 279 885 Preferred Stock Dividend Requirement 1 203 1 203 Earnings Available for Common Stockholder $ 239 465 $ 39 217 $ 278 682 See accompanying notes to unaudited pro forma combined financial statements. * In connection with the business combinations, WE will be renamed Wisconsin Energy Company Note: Earnings per share of common stock are not applicable because the Wisconsin Energy Company common stock will be owned by Primergy. WISCONSIN ENERGY COMPANY * UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENTS OF INCOME TWELVE MONTHS ENDED DECEMBER 31, 1994 (In thousands) WE The Company Pro Forma Pro Forma As Reported As Reported Adjustments Combined Utility Operating Revenues Electric $1 403 562 $375 105 $1 778 667 Gas 324 349 76 715 401 064 Steam 14 281 14 281 Total Operating Revenues 1 742 192 451 820 2 194 012 Utility Operating Expenses Electric production- fuel and purchased power 328 485 179 558 508 043 Cost of gas sold and transported 199 511 53 484 252 995 Other operation 399 011 77 958 476 969 Maintenance 124 602 22 385 146 987 Depreciation and amortization 177 614 30 774 208 388 Taxes other than income taxes 76 035 13 710 89 745 Revitalization Charges 73 900 73 900 Income taxes 99 761 19 077 118 838 Total Operating Expenses 1 478 919 396 946 1 875 865 Utility Operating Income 263 273 54 874 318 147 Other Income (Expenses) 25 334 1 245 26 579 Income Before Interest Charges and Preferred Dividends 288 607 56 119 344 726 Interest Charges 106 853 17 574 124 427 Net Income 181 754 38 545 220 299 Preferred Stock Dividend Requirement 1 351 1 351 Earnings Available for Common Stockholder $ 180 403 $ 38 545 $ 218 948 See accompanying notes to unaudited pro forma combined financial statements. * In connection with the business combinations, WE will be renamed Wisconsin Energy Company Note: Earnings per share of common stock are not applicable because the Wisconsin Energy Company common stock will be owned by Primergy. NORTHERN STATES POWER COMPANY (WISCONSIN) UNAUDITED PRO FORMA CONDENSED BALANCE SHEET DECEMBER 31, 1996 (In thousands) The Company Pro Forma The Company Pro Forma Balance Sheet As Reported Adjustments As Adjusted (Note 2) Assets Utility Plant Electric $894 143 $894 143 Gas 99 817 (35 406) 64 411 Other 67 262 67 262 Total 1 061 222 (35 406) 1 025 816 Accumulated provision for depreciation (395 619) 15 196 (380 423) Nuclear fuel-net Net Utility Plant 665 603 (20 210) 645 393 Current Assets 86 933 18 445 105 378 Other Assets 56 595 (1 183) 55 412 Total Assets $809 131 $(2 948) $806 183 Liabilities and Equity Capitalization Common stock equity $331 412 $331 412 Cumulative preferred stock and premium Long-term debt 231 688 231 688 Total Capitalization 563 100 563 100 Current Liabilities Current portion of long-term debt Short-term debt 39 300 39 300 Other 50 112 50 112 Total Current Liabilities 89 412 89 412 Other Liabilities 156 619 (2 948) 153 671 Total Capitalization and Liabilities $809 131 $(2 948) $806 183 See accompanying notes to unaudited pro forma combined condensed financial statements. WISCONSIN ENERGY COMPANY* UNAUDITED PRO FORMA COMBINED CONDENSED BALANCE SHEET DECEMBER 31, 1996 (In thousands) Adjusted WE The Company Pro Forma Pro Forma Pro Forma Balance Sheet As Reported As Adjusted Adjustments Combined (See Page 59) (Note 3) Assets Utility Plant Electric $4 857 528 $894 143 $5 751 671 Gas 505 100 64 411 569 511 Other 61 765 67 262 129 027 Total 5 424 393 1 025 816 6 450 209 Accumulated provision for depreciation (2 441 950) (380 423) (2 822 373) Nuclear fuel-net 75 476 Net Utility Plant 3 057 919 645 393 3 703 312 Current Assets 540 825 105 378 646 203 Other Assets 908 416 55 412 (150 269) 813 559 Total Assets $4 507 160 $806 183 $(150 269) $5 163 074 Liabilities and Equity Capitalization Common stock equity $1 738 788 $331 412 $2 070 200 Cumulative preferred stock and premium 30 450 30 450 Long-term debt 1 371 446 231 688 1 603 134 Total Capitalization 3 140 684 563 100 3 703 784 Current Liabilities Current portion of long-term debt 183 635 183 635 Short-term debt 45 390 39 300 84 690 Other 258 570 50 112 308 682 Total Current Liabilities 487 595 89 412 577 007 Other Liabilities 878 881 153 671 (150 269) 882 283 Total Capitalization and Liabilities $4 507 160 $806 183 $(150 269) $5 163 074 See accompanying notes to unaudited pro forma combined condensed financial statements. * In connection with the business combinations, WE will be renamed Wisconsin Energy Company. WISCONSIN ENERGY COMPANY * NOTES TO UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL STATEMENTS 1. The unaudited pro forma combined condensed financial statements reflect the previously planned merger by WEC of its gas utility subsidiary, Wisconsin Natural (WN), into WE to form a single combined utility subsidiary. Completion of the planned merger occurred on January 1, 1996. As part of the Merger Transaction, the unaudited pro forma combined condensed financial statements reflect the merger of the Company, currently a wholly owned subsidiary of the Minnesota Company, into Wisconsin Energy Company. At the time of the merger of the Company into Wisconsin Energy Company, New NSP will acquire certain gas utility assets in La Crosse and Hudson, Wisconsin from the Company. 2. A pro forma adjustment has been made in the Company's Unaudited Pro Forma Condensed Balance Sheet at December 31, 1996 to reflect the sale at net book value of the gas utility assets and liabilities of the Company's divisions in La Crosse and Hudson, Wisconsin to New NSP. Unaudited pro forma income statement amounts for Wisconsin Energy Company do not reflect the transfer of the La Crosse and Hudson divisions by the Company to New NSP. The revenues related to those divisions for the twelve months ended December 31, 1996, 1995 and 1994 were $32,462,000, $28,897,000, and $26,779,000, respectively. The amount of related expenses have not been quantified. 3. A pro forma adjustment has been made in the Wisconsin Energy Company Unaudited Pro Forma Combined Condensed Balance Sheet at December 31, 1996 to conform the presentation of noncurrent deferred income taxes into one net amount. All other financial statement presentation and accounting policy differences are immaterial and have not been adjusted in the unaudited pro forma combined condensed financial statements. 4. Intercompany transactions (including purchased power and exchanged power transactions) between WE and the Company during the period presented were not material and, accordingly, no pro forma adjustments were made to eliminate such transactions. 5. The allocation between NSP and WEC and their customers of the estimated cost savings resulting from the transactions contemplated by the Merger Agreement, net of the costs incurred to achieve such savings, will be subject to regulatory review and approval. None of these estimated cost savings, the costs to achieve such savings, or transaction costs have been reflected in the unaudited pro forma combined condensed financial statements. * In connection with the business combinations, WE will be renamed Wisconsin Energy Company.