NextEra’s blockbuster deal with Dominion means the largest electricity company stands to benefit even more from AI growth. But what does it mean for ratepayers?By Dan Gearino, Amy Green, Charles PaullinA proposed merger of the largest utility in the country by market value, NextEra Energy, with the sixth-largest, Dominion, would create a megacompany at a time when data centers and rapid increases in electricity demand are reshaping the industry.