Duck River Selects DVI for Full Deployment of EDGE® Volt/VAR Optimization Platform

• Project will allow the electric co-op and its members to realize the many benefits of DVI EDGE® technology including energy efficiency, demand response, and voltage stabilization

• EDGE® is expected to generate between 2 and 4 percent in energy savings

• Members to benefit from voltage conservation without change in usage behavior

RICHMOND, Va. — Today, Dominion Voltage, Inc. (DVI), a grid optimization subsidiary of Dominion Resources, Inc., (NYSE: D) announced full deployment of its industry-leading Volt/VAR optimization platform with Duck River Electric Membership Corporation, served by the Tennessee Valley Authority (TVA).

"We expect that this project will generate energy savings from 2 percent to 4 percent annually and help accelerate the deployment of AMI at Duck River," said Michael Watson, president and CEO-Duck River. "The deployment of this technology will allow us to take advantage of TVA's CVR incentives to meet energy efficiency goals and generating savings for our members without requiring a change in usage behavior. It's win-win for the co-op and for our members."

"We are proud to partner with Duck River and to be working in the TVA territory to enable the utilities in this region to achieve the true potential of their investment in AMI," said Todd Headlee, DVI's executive director. "DVI's EDGE technology leverages the smart grid network for Volt/VAR optimization and voltage stabilization, which leads to a more efficient grid."

This project is an important component of Duck River's smart grid initiatives and will enable the utility to evaluate the benefits of optimizing their distribution system voltage for the purposes of energy efficiency, Volt/VAR optimization, and voltage stabilization.

The EDGE® deployment began in June and is expected to be complete within two years.

About DVI

DVI is a leading provider of grid analytics and control technology, providing solutions for energy efficiency, demand response, volt/VAR control, and system reliability. DVI's patented approach plans, manages and validates utilities' investments in grid optimization programs while delivering significant savings to both utilities and their customers (US patents 8437883 and 8577510, and other US and foreign patents pending). For more information about DVI, visit

About Dominion

Dominion is one of the nation's largest producers and transporters of energy, with a portfolio of approximately 24,600 megawatts of generation, 12,200 miles of natural gas transmission, gathering and storage pipeline, and 6,455 miles of electric transmission lines. Dominion operates one of the nation's largest natural gas storage systems with 928 billion cubic feet of storage capacity and serves utility and retail energy customers in 13 states. For more information about Dominion, visit the company's website at or Dominion Energy Solutions at

About Duck River

Duck River EMC, a Touchstone Energy® cooperative, is a not-for-profit, member owned organization providing electric and other services to more than 71,000 homes and businesses in southern Middle Tennessee. Duck River EMC serves an area of approximately 2,500 square miles in Bedford, Coffee, Franklin, Giles, Grundy, Hickman, Lawrence, Lewis, Lincoln, Marion, Marshall, Maury, Moore, Rutherford, and Williamson counties in southern Middle Tennessee.



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