Because of more than $90 million in charges and settlement agreements in acquiring Boston-based electric and gas utility NStar in the second quarter, Northeast Utilities reported quarterly earnings down nearly 40 percent from the second quarter of 2011.

NU last week reported profits of $44.3 million, or 15 cents per share, down from $77.3 million, or 44 cents per share; those earnings including $91.5 million, or 30 cents per share, of after-tax charges from the April 10 closing of the merger and various related settlements benefiting Connecticut and Massachusetts customers. NStar’s results are included in NU’s second-quarter results but not in NU’s first-quarter results.

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