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National Grid Cape Ann upgrade will install a 15-mile underground cable from the East Beverly substation to Gloucester, boosting capacity and grid reliability, reducing blackouts, and strengthening electrical infrastructure for Hamilton, Rockport, and surrounding communities.
Context and Background
A $13M underground cable from Beverly to Gloucester will add capacity and reliability, cutting blackouts across Cape Ann.
- $13M project adds 15-mile underground cable, Beverly to Gloucester
- Boosts capacity and redundancy to handle summer outages
- Replaces oldest underground feeder; higher load capability
- Improves grid reliability for Hamilton, Rockport, and Cape Ann
- Service life 12-15 years; demand up 20% by 2026
Last July, a three-day power outage stopped work at Gloucester Engineering and Varian Semiconductor Associates, and ruined one catering company's entire walk-in freezer system.
Now, utility giant National Grid is proposing a grid modernization plan that could make such summer blackouts at Blackburn Industrial Park a thing of the past. The company has a $13 million upgrade to Cape Ann's electrical service slated for construction next fall.
The project will lay a new underground cable, similar to a recent power line completed in Quincy, from Grid's East Beverly substation up through Gloucester. That cable will help the utility handle blackouts like last July's three-day event, and increase the supply of electricity throughout the region from Hamilton to Rockport.
"It's to allow for additional capacity," said Marie Jordan, Grid's vice president of electrical systems engineering.
Jordan said National Grid will start designing and buying cable for the project next month as part of a power study and hopes to break ground on the work next fall.
The project calls for laying a 15-mile line from Beverly to Gloucester that should be in service in the summer of 2013, Jordan said, a smaller effort than a massive transmission project carrying Canadian hydropower to New York now underway.
Right now, National Grid plc provides electricity to Cape Ann through three 35 kilovolt above-ground power lines and three 23kv underground lines. The new line will replace the oldest of the three underground lines, said Jordan. The new line, she added, will be able to handle more demand than the other lines. It will also improve the reliability of the area's electrical service, she said.
When power goes down because of a fault in one of the cables -- like it did last July amid concerns about the North American power grid across the region -- the utility puts that line's demand on the remaining lines. But the power stayed down last summer because two of the three underground lines faulted simultaneously.
That outage cost Varian and Gloucester Engineering tens of thousands of dollars, and cost Classic Cooks, the local catering company, $3,000 after the contents of its walk-in refrigerator molded in the heat.
Gloucester Engineering, said spokesman Lloyd Rothaus, is looking forward to the coming upgrades.
"At Gloucester Engineering, we depend upon consistent power," Rothaus said in an e-mail to the Times. "All that can be done to eliminate brownouts that affect our operations we view as positive step.".
Jordan said National Grid has invested $60 million in Cape Ann's electrical infrastructure in recent years. The coming upgrade, she said, will increase the supply to Cape Ann. The demand, she said, is expected to grow by 20 percent by 2026.
Grid representatives Dan Cameron and Elton Prifti told the City Council last week that the upgraded service is expected to last 12-15 years.
City Council President Jackie Hardy said that isn't long enough to mesh with the city's long-term planning, which has also been influenced by a power station plan challenged by neighbors in a nearby community.
"Long-term planning," she said "depends on long-term infrastructure."
The industrial park, meanwhile, has been prone to blackouts before.
State Sen. Bruce Tarr said his office and the utility have been talking about upgrades to the area for the last few years. The blackouts, he said, were unacceptable last year and, at times, kept Varian -- Gloucester's and Cape Ann's largest employer -- from operating. National Grid supplied some other companies with generators.
"They have to address not only some day-to-day issues, but do something to increase the supply," said Tarr.
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