Plus Power has achieved a significant milestone with the commissioning of the largest utility-scale standalone battery energy storage system (BESS) on New England’s grid, the Cranberry Point Energy Storage facility, located in Carver, Massachusetts. The 150 MW / 300 MWh BESS is helping the Commonwealth reach nearly a third of its goal to deploy 1,000 MWh of battery energy storage by 2025.
The Cranberry Point facility offers the ability to supply electricity to thousands of homes during peak demand periods or unexpected outages. This capability not only improves grid reliability but also supports the region’s goal of integrating more renewable energy sources, such as wind and solar, into its power supply.
As the largest project of its kind in the region, the Cranberry Point Battery Energy Storage System is part of a broader trend recognizing the critical role of battery storage in enhancing energy resilience. Plus Power plans to implement state-of-the-art battery technology, which stores surplus energy generated from renewable resources. This stored energy can be dispatched during peak usage times or when renewable generation is low, ensuring a balanced and efficient energy supply.
Cranberry Point interconnects adjacent to Eversource’s Carver 115kV substation, which connects to a critically important north-south transmission line between new energy resources and demand in Boston. The facility is located in an energy transition area that has seen the retirement of the Pilgrim Nuclear Power Station and the Mystic Generating Station. It represents roughly 10% of the capacity of the Mystic combined cycle facility and can provide the same fully dispatchable services as a conventional power plant, but with a 250-millisecond response time, and without emissions or water use.
During construction and commissioning, the project utilized 135 workers spanning a variety of trade organizations from the region. The commissioning of this facility marks an important step in addressing power reliability challenges, especially as New England sees increasing demand for sustainable energy solutions. Battery storage systems, like Cranberry Point, play a pivotal role in stabilizing the grid by mitigating fluctuations in power generation and consumption.
The facility contributes to reducing reliance on fossil fuels, thereby lowering emissions and advancing environmental goals. By accommodating significant amounts of renewable energy, this system exemplifies a shift towards more sustainable and environmentally friendly power methods.
Stakeholders, including government bodies, environmental groups, and private entities, have praised the initiative for setting a standard in energy innovation and sustainability. The positive environmental impact, coupled with economic benefits such as job creation during construction and maintenance, further underlines the project’s significance.
As this pioneering energy storage project begins operations, it represents a forward-looking approach to tackling energy challenges. The Cranberry Point Energy Storage project is not only a testament to technological advancement but also a crucial step in achieving a more sustainable and reliable energy future for New England.
Source: New England’s Largest Utility-Scale Battery Energy Storage System Now Online
Photo Credit: Cranberry Point Energy Storage


