Interconnection queue › Arizona › Storage

Storage Projects in the Arizona Interconnection Queue

Snapshot of 2026-09-07 · 16 projects

16 storage projects are in the interconnection queue with a Arizona location, totaling 10,352 MW across the 16 that publish a capacity.

Grouped from the ISOs' own fuel codes (see the mapping). Codes we could not match to a published definition are left unclassified rather than assigned here.

See what moved in storage in Arizona each week

The ISOs publish today's queue and overwrite it, so no archive exists. We keep a weekly copy. Leave your email and we'll send you each week's changes in storage in Arizona, from new entries to projects that came off the list.

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By ISO

ISO	Projects	Capacity
CAISO	16	10,352 MW

By status, as published

Status	Projects
WITHDRAWN	9
ACTIVE	6
COMPLETED	1

Top counties

County	Projects	Capacity
MARICOPA	11	5,302 MW
YUMA	3	1,150 MW
LA PAZ	2	3,900 MW

Largest projects with published capacity

The 12 highest-capacity rows in this page's exact scope, ordered by the capacity the ISO published. Projects without a published capacity are not ranked here and remain included in the totals above.

Project	ISO	County	MW	Status	Queue date	Proposed operation
ATLAS COMPLEX ID 1402	CAISO	LA PAZ	3,200	ACTIVE	2017-05-01	not published
ARIZONA A1 ID 1752	CAISO	MARICOPA	2,000	WITHDRAWN	2020-04-15	not published
RANEGRAS PVS ID 2025	CAISO	LA PAZ	700	WITHDRAWN	2021-04-15	not published
PITCHFORK ENERGY ID 1530	CAISO	MARICOPA	500	WITHDRAWN	2018-04-16	not published
LA PAZ 2 ID 2021	CAISO	MARICOPA	500	WITHDRAWN	2021-04-15	not published
HOODINI ID 1663	CAISO	YUMA	450	ACTIVE	2019-04-15	not published
SUN STREAMS 5 ID 1823	CAISO	MARICOPA	450	WITHDRAWN	2020-04-15	not published
PRIMROSE HYBRID ID 2028	CAISO	MARICOPA	450	WITHDRAWN	2021-04-15	not published
HARQUAHALA FLATS 2 ID 2027	CAISO	MARICOPA	400	ACTIVE	2021-04-15	not published
WINGED DOVE STORAGE ID 2175	CAISO	YUMA	400	WITHDRAWN	2021-04-15	not published
HARQUAHALA SUNRISE ID 1678	CAISO	MARICOPA	300	ACTIVE	2020-04-15	not published
REMY ID 2154	CAISO	YUMA	300	ACTIVE	2021-04-15	not published

Where each number came from

ISO	We last read	Source last changed	Source
CAISO	2026-09-07	2026-09-07 (changed this snapshot)	source file

This week's changes · How this is collected

Compiled from each ISO's own published interconnection queue report. Queue position is not a permit, a contract, or a guarantee that a project will be built; most projects in every queue are eventually withdrawn. Figures are reproduced as published, are provided for informational purposes only, and carry no warranty of accuracy or completeness. Always verify against the ISO's own report before relying on any figure.