HARTFORD, Conn. (AP) U.S. Sen. Richard Blumenthal is calling on federal energy regulators to review what he calls an ``excessive increase'' in the fixed residential charge imposed by Connecticut's largest electric utility, Connecticut Light and Power.

The Democrat sent a letter Tuesday to the chairman of the Federal Energy Regulatory Commission, saying there's a ``clear, urgent need for FERC to establish policy'' to ensure energy conservation is promoted. Opponents of the fixed charge say higher rates charged by utilities ultimately discourage alternative energy usage and conservation.

Blumenthal is the latest public official to blast a decision by state regulators allowing CL&P to increase its monthly charge from $16 to $19.25. Some state lawmakers are seeking a cap.

CL contends it needs the money to cover ``significant expenses'' associated with running a complex electric system.