EXHIBIT 8 February 17, 1995 San Diego Gas & Electric Company 101 Ash Street San Diego, CA 92101 Ladies and Gentlemen: You have asked for our opinion as to certain federal income tax consequences of a proposed transaction that would result in the creation of a holding company structure for San Diego Gas & Electric Company ("SDG&E") and its subsidiaries. The proposed transaction is set forth in the Agreement of Merger (the "Agreement") among SDG&E, SDO Parent Co. ("ParentCo") and San Diego Merger Company ("MergeCo") set forth as Exhibit A to the Proxy Statement/Prospectus of ParentCo included in ParentCo's Registration Statement on Form S-4 filed with the Securities and Exchange Commission on December 22, 1994 (the "Registration Statement"). We understand, and the opinions rendered herein assume, that the facts surrounding the proposed transaction are as follows. SDG&E, a California corporation, is engaged in the sale of natural gas and electricity. SDG&E has authorized capital of: (i) 255 million shares of no par value common stock ("Common Stock"); (ii) 1.375 million shares of $20 par value cumulative voting preferred stock ("Preferred Stock"); and (iii) 10 million shares of no par value cumulative nonvoting preference stock ("Preference Stock"). As of September 30, 1994, SDG&E had the following outstanding shares of stock: (i) 116,475,955 shares of Common Stock; (ii) four different series of Preferred Stock aggregating 1,374,650 shares; and (iii) four different series of Preference Stock aggregating 3,190,000 shares. The SDG&E Common Stock is widely held and publicly traded on the New York and Pacific Stock Exchanges. The SDG&E Preferred and Preference series are publicly traded on the American and Pacific Stock Exchanges, except for the 4.6% Series of SDG&E Preferred Stock and the $1.70 and $1.7625 Series of SDG&E Preference Stock, which are traded over the counter. Califia Company ("Califia"), a California corporation, is engaged in the business of leasing computer equipment. Califia has outstanding 27,249 shares of no par value voting common stock, 25,000 shares of Series A $9.25 no par value nonvoting preferred stock and San Diego Gas & Electric Company February 17, 1995 Page 2 36,500 shares of Series B $8.75 no par value nonvoting preferred stock. SDG&E owns all of the outstanding common stock, 21,350 shares (85.4%) of the Series A preferred stock and 31,000 shares (84.9%) of the Series B preferred stock. The remaining outstanding preferred stock is held by CMA Leasing Associates, an unrelated entity. Enova Corporation ("Enova"), a California corporation, is a wholly owned subsidiary of SDG&E which invests in affordable housing projects through multiple limited partnership interests. Pacific Diversified Capital Company ("PDCC"), a California corporation, is a wholly owned subsidiary of SDG&E which acts as a holding company. PDCC owns all of the stock of Phase One Development, Inc. ("Phase One") and 81 percent of the stock of Wahlco Environmental Systems, Inc. ("WESI"). The remaining 19 percent of the stock of WESI is publicly owned. Phase One is a California corporation engaged in the business of real estate development. WESI, a Delaware corporation, is a holding company which owns Wahlco, Inc. and several other subsidiaries engaged in the air pollution control business. Enova Energy Management, Inc. ("EEMI"), a California corporation, is a wholly owned subsidiary of SDG&E engaged in the business of energy procurement consulting services. ParentCo, a California corporation, was formed for the purpose of engaging in business as a holding company. ParentCo has authorized capital consisting of 300 million shares of common stock and 30 million shares of preferred stock, none of which have been issued. MergeCo, a California corporation, was formed solely for the purpose of consummating the proposed transaction. MergeCo has authorized capital consisting of 1000 shares of common stock, none of which have been issued. The management of SDG&E has determined that the proposed transaction would be in the best interests of SDG&E, Califia, Enova, PDCC, EEMI and the SDG&E stockholders. The management of SDG&E believes that a holding company structure would facilitate the acquisition and integration of other energy related operations by providing a more clearly defined separation of utility and non-utility operations and would permit the use of financing techniques that are more directly suited to the particular requirements, characteristics and risks of non-utility operations with substantially less impact on the capital structure or credit of SDG&E, thereby increasing and improving SDG&E's financial flexibility. San Diego Gas & Electric Company February 17, 1995 Page 3 Accordingly, the following steps have occurred: Step 1 On December 20, 1994, ParentCo was incorporated; and Step 2 On January 6, 1995, MergeCo was incorporated. Following the receipt of certain regulatory approvals, the following steps will occur: Step 3 100 shares of common stock of ParentCo will be issued to SDG&E; and Step 4 100 shares of common stock of MergeCo will be issued to ParentCo. Pursuant to authority conferred on December 19, 1994 by the board of directors of SDG&E and anticipated to be conferred on February 27, 1995 by the board of directors of ParentCo and on April 25, 1995 by the shareholders of SDG&E, and upon satisfaction of certain regulatory conditions, the following steps will occur in the following sequence: Step 5 MergeCo will merge with and into SDG&E according to applicable state law; and Step 6 SDG&E will distribute all of its stock of Califia, Enova, PDCC and EEMI to ParentCo. Under the merger described in Step 5, SDG&E will be the surviving corporation and each outstanding share of SDG&E common stock will be automatically converted into one share of common stock of ParentCo, except that, to the extent that state law provides rights to dissenting shareholders, those SDG&E shareholders who exercise dissenters' rights in the statutorily prescribed manner ("Dissenters") will be paid by SDG&E an amount equal to the fair market value of their shares at the time immediately preceding the announcement of the merger or value as determined by judicial proceedings, if the parties disagree. The 100 shares of MergeCo common stock issued to ParentCo will automatically be converted into all of the issued and outstanding common stock of SDG&E. The 100 shares of ParentCo common stock issued to SDG&E will be canceled in the merger. The shares of Preferred Stock and Preference Stock issued and outstanding immediately before the merger will not be affected by the merger, but will remain issued and outstanding shares of SDG&E preferred stock entitled to the same respective relative rights and preferences as presently provided. As a result of Steps 5 and 6, the SDG&E common shareholders other than Dissenters (the "Transferors") will own all of the outstanding stock of ParentCo and ParentCo will directly own all of the outstanding common stock of SDG&E, Califia, Enova, PDCC and EEMI and all of the outstanding preferred stock of Califia presently owned by SDG&E. San Diego Gas & Electric Company February 17, 1995 Page 4 We understand and assume the following: (a) No stock or securities will be issued for services rendered to or for the benefit of ParentCo in connection with the proposed transaction, and no stock or securities will be issued for indebtedness of ParentCo. (b) The transfer is not the result of the solicitation by a promoter, broker, or investment house. (c) The Transferors will not retain any rights in the property transferred to ParentCo. (d) ParentCo will not assume any liabilities of the Transferors and the stock being transferred is not subject to any liabilities. (e) There is no indebtedness between ParentCo and any Transferor and there will be no indebtedness created in favor of any Transferor as a result of the transaction. (f) The transfers and exchanges will occur under a plan agreed upon before the transaction in which the rights of the parties are defined. (g) All exchanges will occur on approximately the same date. (h) With the exception of incorporation shares issued to SDG&E which will be canceled upon consummation of the transaction, there is no plan or intention on the part of ParentCo to redeem or otherwise reacquire any stock or indebtedness to be issued in the proposed transaction. (i) There is no plan or intention for ParentCo to issue additional shares of ParentCo stock, except pursuant to the Common Stock Investment Plan (the "CSIP") and various employee benefit plans presently maintained by SDG&E. In the past, such issuances have in the aggregate amounted annually to less than one percent of the outstanding shares of SDG&E Common Stock. There is no plan or intent for future issuances pursuant to the CSIP and the employee benefit plans to exceed historical levels and it is not anticipated that such issuances will exceed historical levels. (j) To the best knowledge of management, there is no plan or intention on the part of the Transferors to sell, exchange, transfer by gift, or otherwise dispose of any of the stock of ParentCo to be received in the exchange. (k) Each Transferor will receive ParentCo common stock approximately equal to the fair market value of the SDG&E common stock transferred to ParentCo. San Diego Gas & Electric Company February 17, 1995 Page 5 (l) ParentCo will remain in existence as a holding company, as described above. (m) There is no plan or intention by ParentCo to dispose of any SDG&E stock, or any assets of SDG&E whose value exceeds in the aggregate five percent of the shareholders' equity in SDG&E, other than in the normal course of business operations. No such asset sale is being considered as part of the proposed transaction. The proceeds from any such sale would not be distributed to the shareholders of either ParentCo or SDG&E (other than ParentCo). (n) Each of the parties to the transaction will pay their own expenses, if any, incurred in connection with the proposed transaction. (o) ParentCo will not be a regulated investment company (a "RIC") or a real estate investment trust (a "REIT"), and ParentCo will not hold readily marketable stocks or securities for investment or interests in RICs or REITs the value of which in the aggregate exceeds 80 percent of the value of ParentCo's assets. (p) To the best knowledge of management, no Transferor is under the jurisdiction of a court in a title 11 or similar case (within the meaning of section 368(a)(3)(A)) and the stock or securities received in the exchange will not be used to satisfy the indebtedness of such debtor, except that Dr. Ralph R. Ocampo, a director who holds 13,128 shares jointly with spouse/children, petitioned for protection under Chapter 11 of the Federal Bankruptcy Code in March 1993. Additionally, we assume (1) the accuracy of the Agreement; and (2) the accuracy of all factual statements and representations made in our December 19, 1994 IRS private letter ruling request and any supplements thereto. Finally, we assume, and this opinion is conditioned on, the receipt by SDG&E of a private letter ruling from the IRS ruling that the formation of MergeCo and its merger with and into SDG&E will be disregarded for federal income tax purposes, and the transaction will be treated as a transfer by the Transferors of their SDG&E common stock to ParentCo solely in exchange for an equal number of shares of common stock of ParentCo. In light of the foregoing, and based solely on the information, understandings and assumptions described herein, and assuming no material changes in such information, understandings and assumptions nor in the applicable law prior to consummation of the proposed transaction, our opinion is as follows with respect to Step 5: (i) No gain or loss will be recognized to the Transferors upon the transfer of their SDG&E common stock to ParentCo solely in exchange for shares of ParentCo common stock (section 351(a)). San Diego Gas & Electric Company February 17, 1995 Page 6 (ii) No gain or loss will be recognized by ParentCo upon the receipt of the SDG&E common stock solely in exchange for shares of ParentCo common stock (section 1032(a)). (iii) The basis of the ParentCo common stock to be received by the Transferors in the transaction will be the same as the basis of the SDG&E common stock surrendered in exchange therefor (section 358(a)(1)). (iv) The holding period of the ParentCo common stock to be received by the Transferors will include the period during which the SDG&E common stock was held, provided that the SDG&E common stock was held as a capital asset on the date of the exchange (section 1223(1)). (v) The basis of the SDG&E common stock to be received by ParentCo will be the same as the basis of the stock in the hands of the exchanging Transferors (section 362(a)). (vi) The holding period of the SDG&E common stock to be received by ParentCo will include the period during which such stock was held by the Transferors (section 1223(2)). No opinion is expressed about the tax treatment of the transactions described in Steps 1, 2, 3, 4 and 6. Further, no opinion is expressed about the tax treatment of the transaction under other provisions of the Internal Revenue Code and implementing regulations or about the tax treatment of any conditions existing at the time of, or effects resulting from, the transaction that are not specifically covered by the above opinions. The opinions rendered herein are based on provisions of the Internal Revenue Code of 1986, as amended as of the date hereof, regulations promulgated pursuant thereto, reported judicial decisions and published administrative rulings. Judicial, legislative or administrative changes may be forthcoming that would require modification of some or all of the conclusions reached in those opinions and you should be aware that any such changes may be applicable retroactively. We hereby consent to the filing of this opinion as an exhibit to the Registration Statement and to the reference to our firm under the caption "Formation of a Holding Company - Federal Income Tax Consequences of the Merger" in the Registration Statement. Very truly yours, /s/ Pillsbury Madison & Sutro