Filed Under Rule 424(b)(2) Registration File No. 333-19263 PRICING SUPPLEMENT NO. 9 Dated April 7, 1998 to Prospectus dated January 6, 1997. BALTIMORE GAS AND ELECTRIC COMPANY Medium-Term Notes, Series E This Pricing Supplement describes our sale of Notes through Goldman, Sachs & Co., as agent. Principal Amount: $16,500,000 Interest Rate: 6.21% Original Issue Date: 4/08/98 Stated Maturity: 4/08/2008 Price to Public: $16,500,000 Agent's Commission: $99,000 Net Proceeds to Company: $16,401,000 CUSIP 05916M AM 5 We registered a total of $200,000,000 worth of Notes. We have issued $200,000,000, including these $16,500,000. This completes the sale of Medium-Term Notes,Series E.