Marblehead Municipal Light Department Smart Grid Project

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Marblehead Municipal Light Department, located in Marblehead, Massachusetts, will receive $1.3 million in funding to develop a smarter energy grid. The U.S. Department of Energy selected Marblehead as one of 100 companies to receive federal stimulus funds as part of the American Recovery and Reinvestment Act of 2009.[2]

The Marblehead Municipal Light Department (MMLD) project involves the town-wide installation of a fully integrated advanced metering system and a pilot program to assess the effectiveness of time-based rate programs and automated load management. It is aimed at reducing peak electricity demand, overall energy use, and operations and maintenance costs while increasing distribution system efficiency, reliability, and power quality. The project implements two-way communication to: (1) allow customers to view their energy consumption at their convenience through an energy Web portal, and (2) allow MMLD to manage, measure, and verify targeted demand reductions during peak periods. The project also includes a study of consumer behavior in response to a critical peak pricing service option.[3]


  • More than 10,000 Smart Meters
  • AMI Communication Systems
  • Meter Communications Network
  • Backhaul Communications
  • More than 10,000 Customer Web Portal Access
  • Up to 150 In-Home Displays
  • Up to 150 Programmable Communicating Thermostats
  • Up to 300 Direct Load Control Devices (Pool Pumps and Water Heaters)
  • Energy Management Systems

Targeted Benefits

  • Reduced Electricity Costs for Customers
  • Reduced Operating and Maintenance Costs
  • Increased Electric Service Reliability and Power Quality
  • Reduced Greenhouse Gas Emissions
  • Reduced Costs from Equipment Failures, Distribution Line Losses, and Theft


  1. ARRA Smart Grid Investment Grants
  2. 2.0 2.1 Marblehead Award
  3. Project Information page