Hopkinton High School junior Matthew Grillo spent his day off from classes ringing up a steady stream of customers at Colonial Village Supermarket.

The independent grocery store in Contoocook reopened Monday following a 24-hour power outage that left most of the town dark on Sunday and caused some of its refrigerated food to be thrown away.

“We were definitely hit a lot in the meat department,” said Grillo, who picked up three extra hours at the front registers to handle the influx of shoppers.

Thousands across the region remained without power Monday afternoon following Saturday’s snow and ice storm, according to energy providers Unitil and Eversource.

Towns west and southwest of Concord, including Weare, Henniker, Webster and Dunbarton, appeared most affected.

In Hopkinton, where most people get power from Eversource, about half of homes and businesses were still without power by 4:30 p.m. on Monday.

In the smaller town of Webster, virtually all the Eversource customers – 553 of 557 – remained without power late Monday afternoon.

Power outages and impassable roads led to several school closures, including in Hopkinton, Henniker, and Weare, on Monday. Bow and Dunbarton operated on a two-hour delay.

Leander, 12, and Jameson, 11, students at Maple Street Elementary School in Hopkinton, took full advantage of their snow day. The two friends biked to Colonial Village to pick up Lunchables and stopped by Dunkin’ to grab some sweets.

“We’ve had a couple snow days, but this is probably the best one,” said Jameson, who is looking forward to a three-day school week, with a professional development day scheduled for Friday.

Hopkinton resident Diane Hotten-Somers, 55, lost power Saturday and she was not sure when it would return. Her children, a high school freshman and junior, spent the day off from school “whining about not having Wi-Fi,” she joked.

Eversource officials said they hoped to have the customer base almost completely restored by 11:30 p.m. Monday. Unitil, the lead energy provider for multiple communities in the Concord area, including Bow and Bosawen, said a few isolated customers will be without electricity until Tuesday.

The Barrel & Baskit general store regained power late Sunday night and opened around 11 a.m. Monday, owner Beth Richards said.

The prolonged power outage forced Richards to throw out ice cream, prepared food, and some meats, and offer a reduced menu Monday.

Richards was thankful, though, the storm didn’t come a few days later.

“I’m lucky my Easter hams arrive tomorrow, so I didn’t lose those,” she said.

In Henniker and Weare, anyone without power was able to charge their phones and get some hot pizza at the Henniker Community School and Weare Middle School. Bishop Brady High School in Concord also invited families in to use the Wi-Fi.

Both Unitil and Eversource called in extra crews to help with the restoration efforts after Saturday’s icy storm.

“This early spring storm brought some of the most significant ice damage to trees in New Hampshire that we’ve seen in several years, causing more than 180 blocked roads, more than 100 broken poles, and extensive damage to the electric system in multiple regions across the state,” Eversource New Hampshire operations director Doug Foley said.