MADRID — In the winter of 2015, three directors of a Connecticut electric company met with a potential acquirer: a determined Spanish utility executive named José Ignacio Sánchez Galán, who surprised them with a bold vision for America’s utility industry.“He was very clear then that he saw the U.S. as having enormous potential in renewable energy,” said John L. Lahey, who was chairman of the company, United Illuminating. “This guy six years ago was already way ahead of where the U.S. was.”Mr. Galán clinched that deal for United Illuminating for $3 billion. His company, Iberdrola, is now poised, …
