Filed Under Rule 424(b)(2) Registration File No 333-19263 PRICING SUPPLEMENT NO. 3 Dated June 11, 1997 to Prospectus dated January 6, 1997. BALTIMORE GAS AND ELECTRIC COMPANY $200,000,000 Medium-Term Notes, Series E Due from 1 year to 30 years from Date of Issue (Interest Payable May 1 and November 1) Principal Amount: $25,000,000 Interest Rate: 6.75% Original Issue Date: 6/12/97 Stated Maturity: 6/12/2012 Repurchase Dates at the Option of the Holder: 6/12/2004 @ 100% 6/12/2007 @ 100% Price to Public: $25,000,000 Agent's Commission: $137,500 Net Proceeds to Company: $24,862,500 This Pricing Supplement relates to our original issuance and sale of the Medium-Term Notes, Series E through Lehman Brothers or Goldman, Sachs & Co., as agents. We may issue Medium-Term Notes, Series E under Registration Statement No. 333-19263 in an aggregate principal amount of up to $200,000,000. To date, including this offering, we have issued $85,000,000 aggregate principal amount of those Notes. Filed Under Rule 424(b)(2) Registration File No 333-19263 PRICING SUPPLEMENT NO. 4 Dated June 11, 1997 to Prospectus dated January 6, 1997. BALTIMORE GAS AND ELECTRIC COMPANY $200,000,000 Medium-Term Notes, Series E Due from 1 year to 30 years from Date of Issue (Interest Payable May 1 and November 1) Principal Amount: $25,000,000 Interest Rate: 6.73% Original Issue Date: 6/12/97 Stated Maturity: 6/12/2012 Repurchase Dates at the Option of the Holder: 6/12/2004 @ 100% 6/12/2007 @ 100% Price to Public: $25,000,000 Agent's Commission: $137,500 Net Proceeds to Company: $24,862,500 This Pricing Supplement relates to our original issuance and sale of the Medium-Term Notes, Series E through Lehman Brothers or Goldman, Sachs & Co., as agents. We may issue Medium-Term Notes, Series E under Registration Statement No. 333-19263 in an aggregate principal amount of up to $200,000,000. To date, including this offering, we have issued $110,000,000 aggregate principal amount of those Notes.