# Cranberry Point Energy Storage

ISO-NE asset profile · https://askthegrid.com/assets/facilities/cranberry-point-energy-storage

A two-hour Tesla Megapack facility beside Carver Substation

Cranberry Point is an operating 150 MW/300 MWh standalone battery on a six-acre parcel in Carver, Massachusetts. The final approved design uses 82 Tesla Megapack 2 XL units with integrated inverters.

## Profile

- **Current equipment design:** The 2023 final order and municipal comparison document the 82-unit Megapack 2 XL configuration, superseding the earlier approximately 116-enclosure design.

## Metrics

- **Storage power:** 150 MW — Current EIA nameplate and regulator-approved project basis.
- **Storage energy:** 300 MWh — Two-hour project design.
- **Battery units:** 82 — Tesla Megapack 2 XL units in the final design.

## Facts

- **Commercial operation:** May 2025 · confidence: high
- **Battery chemistry:** Lithium iron phosphate · confidence: high

## Related parties

- **Developer/operator:** Plus Power — Official project record and company releases ([source](https://cranberrypointenergystorage.com/about))

## Sources

- [Cranberry Point final order](https://www.mass.gov/doc/cranberry-point-final-order/download) — Massachusetts Department of Public Utilities · final regulator order — Final project configuration, equipment count, capacity, and interconnection facilities.
- [Cranberry Point design comparison](https://www.carverma.gov/sites/g/files/vyhlif4221/f/uploads/cranberry_point_comparisons_28_mar_2023_0.pdf) — Town of Carver · municipal record — Documents the 82-unit Megapack 2 XL design and superseded 116-unit configuration.

---

Canonical page: https://askthegrid.com/assets/facilities/cranberry-point-energy-storage
Website: [Cranberry Point Energy Storage, LLC](https://cranberrypointenergystorage.com/)

Source: Ask the Grid — https://askthegrid.com/