Edison International’s quarterly earnings more than doubled from a year ago due largely to higher revenue from the independent power business of its Mission Energy Holding Co. unit.

Rosemead-based Edison, the parent of Southern California Edison, Edison Mission Energy and Edison Capital, reported net income of $201 million (61 cents per diluted share) for the first quarter ended March 31, compared with $97 million (30 cents) for the like period a year earlier. Revenue rose to $2.4 billion from $2.1 billion in the year-ago period.

Analysts had expected earnings per share of 34 cents.

Edison said its surge in earnings reflect improved operating results from Mission Energy Holding Co.’s independent power business, gains from Edison Capital’s investment in the Emerging Europe Infrastructure Fund, and higher revenue at Southern California Edison due to a rate case decision reached in July.

Revenue at Mission Energy Holding Co. rose to $511 million from $389 million in the year-ago period and earnings edged up to$32 million from $7 million. Edison said the improvement was due to stronger operating performance at the Illinois and Homer City Plants, driven by higher merchant generation and wholesale energy prices.

Revenue at Southern California Edison increased to $1.9 billion from $1.7 billion in the comparable period of 2004 and earnings rose to $131 million from $100 million.

Shares of Edison International were up 3.2 percent to $37.67 in mid-afternoon trading on Monday.