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May 17 (Reuters) - U.S. power firm NextEra Energy NEE.N is discussing a mostly stock deal for Dominion Energy D.N that would value the smaller Virginia-based utility at about $76 per share, or around $66 billion, Bloomberg News reported on Sunday.

A tie-up between the two would create one of the largest power companies in the United States by market value.

The offer represents a premium of roughly 21% to Dominion’s closing price on May 15, according to Reuters calculations.

NextEra would exchange about 0.8 per share of its stock for each outstanding share of Dominion, in a deal that could be announced as soon as Monday, the Bloomberg report added.

While NextEra plans to pay mostly stock, the deal would also include a small cash component, the report said, adding that NextEra shareholders would own about 75% of the combined company.

Reuters could not immediately verify the report. The companies did not immediately respond to Reuters' requests for comment outside regular business hours.

Florida-based NextEra, one of the world's largest energy developers, has a market capitalization of $194.69 billion, compared with about $54.29 billion for Dominion, according to LSEG data.

The news of the merger was first reported by the Financial Times on Friday, which said, citing sources, that a deal would create a company valued at about $400 billion including debt.

Record U.S. power consumption in 2025 is set to climb further over the next two years as the AI boom drives data-center operators to lock in utility supply deals, boosting sector profits amid rising demand.