India, March 3 -- Xcel Energy Inc. (XEL) announced that Timothy O'Connor, executive vice president, chief operations officer, will retire from the company this summer after nearly two decades of service.

As part of the company's succession planning process, two internal executive appointments have been announced, with both appointments set to take effect on May 1.

Scott Sharp will be named executive vice president, chief generation officer, adding oversight of Nuclear to his portfolio of Energy Supply and Commercial Operations.

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Michael Lamb will be named executive vice president, chief delivery officer. He has led the company's Customer Delivery group s...