The $6.8bn deal will swell Exelon’s retail base by two million customer accounts – to 10 million – in a densely populated part of the US where Exelon already owns some renewables capacity.

In addition to its huge distribution business, Exelon is also a major electricity generator, with 35GW of capacity on its books – including 1.3GW of wind, making it the country’s 12th largest windpower generator andan customer of turbine makers like GE, Nordex and Suzlon.

Exelon