#United States #Plus Power #Carver #Battery Storage #Cranberry Point

Plus Power's Cranberry Point Energy Storage Facility Now Operational

Plus Power has officially launched its Cranberry Point Energy Storage facility in Carver, Massachusetts. This groundbreaking installation stands as the largest standalone battery energy storage system in New England, possessing a capacity of 150 MW and an impressive storage capability of 300 MWh. This achievement is pivotal for the region's energy infrastructure and plays a crucial role in enhancing grid reliability.

The facility is not merely a structural innovation; it's a game-changer for New England's energy landscape. Activated after securing a Capacity Supply Obligation with ISO-NE in February 2021, Cranberry Point contributes significantly towards Massachusetts' ambitious goal of deploying 1,000 MWh of battery energy storage by the year 2025. As highlighted by Plus Power's co-founder, Alex Fraenkel, this facility exemplifies the company's dedication to boosting power reliability, reducing energy costs, and promoting a low-emission energy transition.

So, what does this innovative solution mean for everyday energy consumers? When energy demand dips, the Cranberry Point facility captures surplus electricity, storing it for use during peak times when demand surges. This mechanism not only balances the intermittent nature of renewable energy resources but also ensures a more reliable energy supply as the economy grows and traditional power plants phase out. The facility spans approximately six acres of land and connects to Eversource's Carver 115kV substation, which is critical for the transmission lines linking energy resources to various demands in cities like Boston.

Equipped with 82 Tesla Megapack 2 XL battery enclosures, the construction of the Cranberry Point facility employed around 135 skilled workers from various trades within the region. This important renewable energy initiative underscores Massachusetts' commitment to becoming a national leader in energy storage innovation, which has been supported since 2015 through several initiatives worth $10 million.

A key aspect of the Cranberry Point operation is its ability to emulate the dispatchable services of conventional power plants, achieving responses in just 250 milliseconds. However, it does this without the accompanying emissions typically associated with fossil fuel power plants. The facility is also strategically positioned to participate in Massachusetts’ Clean Peak Standard program, working to mitigate emissions during peak usage by utilizing stored energy harvested during periods of high renewable energy production.

The value of such facilities was notably proven on June 24, 2025, amidst a heat wave when energy demand hit its highest point since 2013. The Independent System Operator New England (ISO-NE) faced an unexpected peak demand of 200 MW over its forecasted levels, causing a spike in electricity prices. Thanks to the readiness of the Cranberry Point facility, Plus Power was able to step in and support the grid, highlighting the critical role these battery systems play in energy management and cost regulation.

As it stands, Plus Power continues to expand its footprint across the United States, eyeing enhanced deployment of battery energy storage systems that provide essential services such as capacity and ancillary support. With a portfolio comprising 11 GW across more than 20 states, including eight operational facilities already contributing to the grid, Plus Power’s efforts are at the forefront of the energy transition.

In conclusion, as the energy landscape evolves, the establishment of the Cranberry Point Energy Storage facility symbolizes a significant step towards realizing a sustainable future in Massachusetts. By integrating advanced technology and maintaining a robust energy infrastructure, Plus Power and its partners are setting a precedent for renewable energy solutions in New England and beyond.