Grid operator asks public to limit power use

Unexpected transmission and power plant outages have prompted a plea from the region’s grid manager to limit electricity use in the Boston area and northeastern Massachusetts.

Holyoke-based ISO New England Inc. declared a ‘‘power watch’’ this afternoon that was expected to remain in effect throughout the day. The declaration is a notch below a more urgent ‘‘power warning,’’ issued when electricity supplies are extremely tight.

ISO New England ordered the watch to prevent overtaxing the grid because of a combination of unexpected transmission and power plant outages.

ISO New England officials didn’t immediately return a call seeking further details.

Consumers are being urged to reduce electricity use as soon as possible throughout the day, both at home and work.
(AP)