Edison International on Friday said that its first-quarter net income fell 5.6 percent partly because of lower-than-expected revenue.

The Rosemead parent of Southern California Edison reported net income of $236 million (72 cents per share), compared with $250 million (76 cents) per share, in the year-ago quarter. Revenue was flat at $2.81 billion.

“We achieved solid earnings in a difficult power market,” said Chief Executive Theodore F. Craver Jr. in a statement.

Excluding health care related charges, Edison reported adjusted net income of 82 cents per share compared with 79 cents in the same quarter last year. Analysts surveyed by Thomson Reuters on average expected adjusted net income of 78 cents per share on revenue of $3.08 billion.

Shares were up 56 cents, or 1.7 percent to $33.19 in midday trading on the New York Stock Exchange.