Questions & Answers

  • Why is HMLP proposing a new transmission line and substation?
    Answer: The new substation and transmission line are vital to ensure a reliable, low-cost electricity supply that supports the Town’s public safety, economic vitality and environmental objectives.
  • What is the issue with Hingham’s current supply of electricity?
    Answer: While HMLP has provided reliable electricity supply for decades. currently Hingham is served exclusively by two vulnerable above-ground transmission lines. These two lines travel the same route and share a common set of supports and poles. The fact that both lines share a common route and a single set of poles leaves the Town vulnerable to extended outages because any event (natural or otherwise) impacting the common set of supports and poles will necessarily affect both lines.
  • What is the cost?
    Answer: The estimated cost to design, permit, engineer and build the project (including the required equipment and materials) is about $98 million, depending on a number of factors that are subject to change over time.
  • Is there any alternative?
    Answer: No. The Town of Hingham’s Climate Action Plan is a proactive, forward-looking effort that will move Hingham toward a carbon-free future. Renewable energy from wind and solar sources – as well as energy conservation efforts – will certainly be a significant part of Hingham’s future. However, distributed energy and demand-side management resources cannot meet the Town’s needs without a reliable transmission system. Ensuring that Hingham always has a safe and reliable supply of electricity is the goal of this project.
  • How long will this project take?
    Answer: At this point, HMLP estimates it will take 18 to 24 months to secure the approvals needed from the Massachusetts Energy Facilities Siting Board, and the Towns of Hingham and Weymouth. Once all final permits and approvals are obtained, we estimate it will take another 18 to 24 months to construct, test and place the new transmission line and the substation into service.
Courtesy of ISO New England
Courtesy of ISO New England