Eversource and National Grid Complete Major Upgrade to New England's Electric System

BERLIN, CT and WALTHAM, MA--(Marketwired - Jan 6, 2016) - Cleaner, competitively priced electricity now has a new way to reach customers in southern New England due to the completion of the Interstate Reliability Project (IRP). Eversource (NYSE: ES) and National Grid (LSE: NG) (NYSE: NGG) partnered on the approximately $483 million project, which included station upgrades and the installation of a new 345-kilovolt (kV) transmission line along 75 miles of existing, contiguous rights-of-way in Connecticut, Massachusetts and Rhode Island. The new line and related improvements will enhance reliable delivery of power to customers throughout New England and strengthen the regional electric grid.

"The Interstate Reliability Project improves the efficiency of the grid by eliminating system bottlenecks and improving the flow of power within our region," said David Boguslawski, Vice President of Transmission Strategy & Operations at Eversource. "The project also supports the region's economic growth and environmental goals through greater access to newer, more efficient, and cleaner generating plants."

By strengthening the backbone of the regional grid, the project delivers environmental benefits such as enabling broader regional access to future renewable energy resources and allowing existing renewable resources to reach previously constrained areas. Additionally, farmland was protected as conservation land and critical wildlife habitats received special care during construction. Once the work was complete, the restored rights-of-way added hundreds of acres of important new wildlife habitat that has been shrinking in New England.

"As we look to connect new energy sources, stabilize costs for customers and maintain the reliable service needed to underpin the economic vitality of our communities and our region, a robust, resilient transmission system is a must," said Rudy Wynter, President and Chief Operating Officer of National Grid's FERC-regulated Businesses. "The completion of this project marks a major step towards achieving that goal."

Along with the system reliability and environmental benefits, the IRP will also produce millions of dollars of new, annual property tax revenues to 18 municipalities in the three states where the project was constructed. Additionally, hundreds of workers were employed to work on the IRP that began in early 2014.

The completion of the IRP caps off the New England East West Solution or "NEEWS" -- a suite of projects designed to strengthen the reliability of the regional power grid by improving its efficiency and eliminating crippling congestion that can be very costly for customers. Collectively, the NEEWS projects are the largest upgrade to the regional transmission system in many years. During the past 10 years, while the NEEWS projects were being planned, sited and developed, New England experienced an unprecedented wave of power plant retirements, which made these robust, long-term transmission improvements even more important.

Click here to view Interstate Reliability Project Map

Project Details/Stats

• Rights-of-way miles: 75
• States: Connecticut, Massachusetts and Rhode Island
• Number of towns along the route: 18
• Miles of wire: 679 miles; enough to stretch from Providence, RI to Durham, NC
• Number of tubular steel structures: 899
• Total weight of the steel: 18.4 million pounds
• Amount of concrete for structure foundations: 22,446 cubic yards (equivalent to 2,244 mixer truckloads); enough cubic yards to fill a 21-story building more than 50 square feet

About Eversource
Eversource (NYSE: ES) transmits and delivers electricity to 1.2 million customers in 149 cities and towns and provides natural gas to 220,000 customers in 71 communities in Connecticut. Eversource harnesses the commitment of its approximately 8,000 employees across three states to build a single, united company around the mission of delivering reliable energy and superior customer service. For more information, please visit our website (www.eversource.com) and follow us on Twitter (@EversourceCT) and Facebook (facebook.com/EversourceCT).

About National Grid
 National Grid (LSE: NG) (NYSE: NGG) is an electricity and natural gas delivery company that connects nearly 7 million customers to vital energy sources through its networks in New York, Massachusetts and Rhode Island. It is the largest distributor of natural gas in the Northeast. National Grid also operates the systems that deliver gas and electricity across Great Britain.

Through its U.S. Connect21 strategy, National Grid is transforming its electricity and natural gas networks to support the 21st century digital economy with smarter, cleaner, and more resilient energy solutions. Connect21 is vital to our communities' long-term economic and environmental health and aligns with regulatory initiatives in New York (REV: Reforming the Energy Vision) and Massachusetts (Grid Modernization). For more information, please visit our website, or our Connecting website, follow us on Twitter, watch us on YouTube, friend us on Facebook, and find our photos on Instagram.

Documents and/or Photos available for this release:

Eversource and National Grid Complete Major Upgrade to New England's Electric System

To view supporting documents and/or photos, go to www.enr-corp.com/pressroom and enter Release ID: 394568