Dorth Pl @ 29 Palms Road
Twentynine Palms, CA 92277

Hi Desert Substation
Standalone Storage Development Opportunity
Location: Adjacent to the Hi Desert Substation, San Bernardino County
Utility: Southern California Edison
Jurisdiction: Twentynine Palms
Parcel Size: ~10 acres
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Why This Site Matters
Solar-heavy node: Approximately 57.5 MW of existing solar generation plus 15 MW approved for construction currently feed the Hi Desert Substation, creating a generation profile where standalone battery storage can add significant value by shifting energy from midday production into evening demand.
Substation expansion site: The parcel shares approximately 660 feet of boundary with the Hi Desert Substation, making it one of the few locations capable of supporting standalone storage directly adjacent to the node.
Strategic node control: Securing substation-adjacent land allows developers to establish a long-term storage platform at a solar-concentrated node, providing optionality as interconnection conditions evolve.
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Node Overview
The Hi Desert Substation serves a solar-heavy generation node within the eastern SCE desert network.
Approximate generation profile:
Generation Type	Capacity
Existing solar	~57.5 MW
Existing storage	~3 MW
Solar approved for construction	~15 MW
The high concentration of solar generation creates potential opportunities for battery storage to shift midday generation into evening peak periods.
Standalone storage at or adjacent to the substation could support:
•	energy time-shifting
•	grid balancing
•	ancillary services
•	future solar integration
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Electrical Infrastructure
The parcel sits directly adjacent to the substation with access to multiple distribution and subtransmission circuits.
Nearby infrastructure includes:
•	four 33-kV circuits
•	two 25-kV circuits
•	nearby 115-kV radial line connecting toward regional backbone infrastructure
Substation adjacency enables very short interconnection pathways, potentially reducing gen-tie costs and construction complexity.
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Site Advantages
Compared with other parcels in the immediate area, this site offers several development advantages:
Direct substation adjacency
•	~660-ft shared boundary with the substation
Disturbed land
•	previously developed conditions may reduce biological survey requirements
Visual screening
•	existing substation infrastructure screens the site from Twentynine Palms Road
Access
•	dual access routes suitable for construction and emergency vehicle access
Permitting profile
•	fewer land-use conflicts relative to nearby undeveloped parcels surrounded by residential zoning
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Development Potential
The parcel provides a potential platform for standalone battery energy storage, subject to interconnection review.
Example configurations:
Example Configuration	Storage Capacity
10 MW / 40 MWh	grid balancing
20 MW / 80 MWh	mid-scale storage
larger systems	subject to interconnection review
Given the concentration of solar generation at the node, storage development could help optimize the use of existing grid infrastructure.
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Strategic Position
The parcel represents one of the few locations immediately adjacent to the Hi Desert Substation capable of supporting standalone storage development.
Control of substation-adjacent land can provide developers with:
•	long-term node optionality
•	flexibility as interconnection conditions evolve
•	potential platform for phased storage development
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Offering
10-acre substation-adjacent parcel offered for sale.
Offers invited
Guidance range:
$750,000 – $950,000
Developers interested in establishing a storage position at the Hi Desert node are encouraged to inquire.
Additional information available upon request.
Other substation-adjacent properties in SCE service area are available, individually or as a portfolio.