ALBANY, N.Y. – Iberdrola’s $4.6 billion buyout of Energy East is a done deal.

Lawyers for Energy East – which owns power companies in New York, Maine, Connecticut and Massachusetts – told federal regulators in a letter that they closed the transaction Tuesday.

In Maine, Energy East owns Central Maine Power, which serves 80 percent of the state’s electric customers.

Energy East investors got $28.50 in cash for each share of common stock they owned.