EnerNOC Surges After Federal Regulators Reject PJM Claims

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EnerNOC Inc., an electricity demand-reduction service, jumped after the Federal Energy Regulatory Commission said it won’t pursue penalties against such service providers that PJM Interconnection LLC said have double-counted some reductions.

Boston-based EnerNOC rose $3.12, or 16 percent, to $22.23 at 2:39 p.m. in Nasdaq Stock Market trading. Before today, the shares had dropped 21 percent since Feb. 4, when PJM and its market monitor sent a complaint to federal regulators.