Adds executives quotes, context throughout

By Laila Kearney

NEW YORK, May 11 (Reuters) - Constellation Energy CEG.N, one of the world's biggest electricity producers, hopes U.S. regulators will issue a decision as early as next month that will dictate when the company's Three Mile Island nuclear power plant can restart, executives said on Monday.

Constellation is aiming to revive its nuclear power plant in Pennsylvania, under the new name Crane Clean Energy Center, next year. It has met potential yearslong delays caused by the broader grid, and is appealing to the Federal Energy Regulatory Commission for a workaround of the timing issue.

Initial feedback from the PJM grid indicated that the Crane nuclear plant might not be able to deliver power to the grid until 2031.

FERC may make a decision in June or July on Constellation's request to transfer some of its rights to inject electricity onto the grid from its Eddystone natural gas-fired generating station outside of Philadelphia to the Crane plant, executives said on a quarterly earnings call with investors.

"I don't want anybody to be under the misconception of that the plant won't start sooner," CEO Joe Dominguez said.

The restart of the power plant is being done under a contract to serve Microsoft MSFT.O data centers in the region. No fully shut power plant has ever been restarted, but three efforts to resurrect shut reactors are currently underway in the U.S. as power demand rises from the expansion of energy-intensive data centers and the electrification of industries and buildings.