Sempra Energy subsidiary San Diego Gas & Electric Co. sold $400 million of its 3.75% series RRR first mortgage bonds due June 1, 2047, to repay outstanding commercial paper, according to a June 5 free writing prospectus.

Interest is payable semiannually June 1 and Dec. 1, starting this Dec. 1. The bonds have a spread to benchmark Treasury of 93 basis points. The issue was expected to be rated Aa2 by Moody's, A+ by S&P Global Ratings and AA- by Fitch Ratings.

CastleOak Securities LP, Credit Agricole Securities (USA) Inc., Credit Suisse Securities (USA) LLC, Goldman Sachs & Co. LLC and SMBC Nikko Securities America Inc. acted as joint book-running managers. Academy Securities Inc. and Apto Partners LLC served as co-managers.

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