# Nighthawk Energy Storage, LLC

CAISO asset profile · https://askthegrid.com/assets/facilities/nighthawk-energy-storage-llc

## Current generation inventory

EIA plant 65889 · Inventory reporting month: 2026-08.

- batteries: 300 MW operating nameplate
- Capacity basis: operating_generator_nameplate_mw
- Source inventory: [EIA-860M workbook (preliminary)](https://www.eia.gov/electricity/data/eia860m/xls/august_generator2026.xlsx)
- Inventory retrieved: 2026-10-10T02:12:40.665346+00:00
- Filed coordinate (longitude, latitude): -117.038, 32.933958
- OSM extract: 2026-10-08T20:21:06Z
- OSM mapped edit: 2026-09-18 16:04:14+00:00
- Map prepared: 2026-10-10T02:28:20.165842+00:00

Battery power (MW) and stored energy (MWh) are separate measures. Shared physical-site membership does not establish electrical connectivity, settlement or a common export limit.

## Reviewed overview

Nighthawk Energy Storage, LLC is a 300 MW batteries plant in San Diego County. Nighthawk Energy Storage is a 300 MW, 1,200 MWh lithium iron phosphate battery in Poway, San Diego County, owned and operated by Arevon Energy, which developed it with Tenaska. Tesla supplied 329 Megapack units. The project connects at the Sycamore Canyon Substation and sells energy and resource adequacy to Pacific Gas and Electric under a long-term contract. Arevon and CPUC officials marked its completion in August 2026.

## Reviewed metrics

- **Nameplate capacity:** 300 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 65889 — plant-65889

## Facts

- **Technology:** Batteries
- **Operator:** Arevon Energy
- **Operating status:** Operating

## Related parties

- **Owner / operator / developer:** Arevon Energy — owner ([source](https://arevonenergy.com))
- **Equipment supplier:** Tesla — equipment_supplier ([source](https://www.tesla.com))
- **Offtaker:** Pacific Gas and Electric Company — offtaker ([source](https://www.pge.com))

## Sources

- [energytech.com](https://www.energytech.com/energy-storage/news/55397992/about:blank) — energytech.com · public_source — Source retained for exact-record publication review.
- [tenaska.com](https://www.tenaska.com/new-utility-scale-battery-storage-facility-planned-for-san-diego-county/) — tenaska.com · public_source — Source retained for exact-record publication review.

---

Canonical page: https://askthegrid.com/assets/facilities/nighthawk-energy-storage-llc
Website: [Arevon Energy](https://arevonenergy.com)

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