Brookfield Infrastructure Partners (NYSE: BIP) has invested heavily over the past year to expand its portfolio of infrastructure assets. In addition, the company also benefited from some recently completed growth projects and inflationary rate adjustments, which combined to easily offset the sale of its Canadian electricity transmission business last year. The energy segment's FFO jumped 20% to $48 million thanks in part to the turnaround of the company's North American natural gas pipeline business, which it co-owns with Kinder Morgan (NYSE: KMI) .