Ace Ltd has agreed to acquire Penn Millers Holding Corporation for $107 million in cash.PMHC’s primary insurance subsidiary, Penn Millers Insurance Company, is a well established underwriter of agri-related insurance in the US, providing specialty property and casualty insurance coverages to companies that manufacture, process and distribute agricultural products.Based in Wilkes-Barre, Pennsylvania, the company has served the agribusiness market since 1887 and currently operates in 34 states.“The acquisition of Penn Millers will provide us with an established, specialty niche business that complements our current agricultural market capabilities offered through our Rain and Hail crop insurance and Ace Westchester excess and surplus lines businesses,” said Brian Dowd, Office of the Chairman, Ace Ltd.“This acquisition offers us the opportunity to expand our agribusiness presence. We expect that the addition of Penn Millers to the Ace Group will produce results that are immediately accretive to our earnings, return on equity and book value per share. We expect to achieve a return on capital in excess of our target hurdle rate within a short period of time.”The transaction, which is subject to regulatory approvals, PMHC shareholder approval and other customary closing conditions, is expected to be completed by the end of the first quarter of 2012.