Dorth Pl - 10 acres SCE Hi Desert 33/115-kV Substation Lot • Terrain industriel • 10 Acres • 1 057 380 $ CAD • 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 ________________________________________ 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. ________________________________________ 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 ________________________________________ 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. ________________________________________ 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 ________________________________________ 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. ________________________________________ 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 ________________________________________ 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.