NEEP did not release financial terms of the transaction, which it partly financed from proceeds from a previously announced $313m term loan and cash on hand.

NEEP expects the acquisitions to contribute 2015 adjusted EBITDA of $40m to $50m, and cash available for distribution (CAFD) $15m to $20m.

The four facilities include Ashtabula Wind III, 62.4MW, in North Dakota; Baldwin, 102.4MW, in North Dakota; Mamoth Plains, 198.9MW,