Avangrid, Inc., a leading energy company and member of the Iberdrola Group, today announced that it has continued to invest in the reliability, resilience and modernization of the electric grid throughout 2026, advancing work at more than 40 substations and substation facilities across Maine, New York and Connecticut.

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Substation equipment in Maine

Substation equipment in Maine

From major substation rebuilds and equipment replacements to flood mitigation projects, automation upgrades and capacity enhancements, these investments are helping strengthen the electric system, improve service reliability and support growing energy demand in the communities Avangrid serves.

“Substations are the backbone of a reliable electric grid,” said Avangrid CEO Jose Antonio Miranda. “Across our service territories, we are making strategic investments to modernize critical infrastructure, strengthen resilience against increasingly severe weather, improve operational flexibility, and ensure our electric system is prepared to meet the needs of customers for decades to come.”

Investing in Grid Resilience

In Connecticut, Avangrid subsidiary United Illuminating (UI) continued several major resiliency projects designed to protect critical infrastructure from flooding and extreme weather.

The company advanced construction on flood protection improvements at the Singer Substation in Bridgeport and achieved engineering milestones for flood mitigation efforts at the Grand Avenue-Mill River substation in New Haven and Milvon Substation in Milford. Final closeout activities also continued for the Pequonnock Resiliency Project, which relocated and elevated critical infrastructure to reduce coastal flood risk.

Modernizing Critical Infrastructure

Avangrid continued significant investments to replace aging equipment and modernize substations across the region.

In Connecticut, UI began construction on the Old Town Substation rebuild in Bridgeport, transformer replacement at Ansonia Substation and reliability upgrades at Sackett Substation in North Haven.

Avangrid subsidiaries New York State Electric & Gas (NYSEG) and Rochester Gas and Electric (RG&E) made significant progress modernizing critical infrastructure in New York that is increasing system capacity, improving operational reliability and supporting continued economic growth in local communities. NYSEG completed or advanced major projects at the Fraser, Milo, Meyer, West Hill, Fourth Street, Cayuga Heights, Cobble Hill, Canandaigua, and Aurora substations, and RG&E advanced work at Substation 43 in Rochester.

In Maine, Avangrid subsidiary Central Maine Power (CMP) energized major upgrades at the Stickney’s Corner and Bonney Eagle substations, completed the Rock Row 34-kV switchyard project, and advanced battery system replacements and automation improvements at numerous substations throughout the state.

Supporting Reliability Through Technology

Avangrid also continued investments in modern protection, communications and automation technologies that allow utilities to monitor and operate the grid more effectively.

In Connecticut, UI advanced upgrades to telemetry, relay systems, communications networks and protection equipment at multiple substations and transmission facilities, strengthening situational awareness and improving system protection capabilities. Additionally, construction began for permanent lightning protection improvements at East Shore Substation in New Haven.

In Maine, automated device installations at eight substations improved CMP’s operational flexibility and enhanced its ability to respond to outages and changing system conditions.

Building the Grid of the Future

As electrification, economic development and new technologies continue to increase demands on the electric system, substations will play an increasingly important role in delivering safe and reliable power.

Avangrid’s ongoing investments in substation infrastructure help ensure customers have access to the reliable energy they depend on every day while preparing the grid for future growth and increased resilience.

About Avangrid: Avangrid, Inc. is a leading U.S. energy company investing in grid infrastructure and power generation projects to deliver reliable energy and meet growing electricity demand. With approximately $50 billion in assets and operations across 25 states, Avangrid is helping modernize the U.S. electric grid, improve system resiliency, and support economic growth for the customers and communities it serves.

Avangrid owns and operates seven electric and natural gas utilities, serving more than 3.4 million customers in New York and New England. Avangrid also has nearly 100 energy generation facilities across the United States and more than 11 gigawatts of installed capacity. Avangrid has more than 8,300 employees and was named among the World’s Most Ethical Companies in 2026 for the eighth consecutive year by the Ethisphere Institute. Avangrid is a member of the Iberdrola Group.

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