Outer Spaces debuts OS1 solar pavilion with hidden battery storage
Outer Spaces has launched the OS1, a backyard pavilion integrating solar panels and battery storage concealed within the decking. The company, backed by $8 million in pre-seed funding, targets 2027 delivery for the system, which uses Horizon BladePack lithium iron phosphate modules.
Outer Spaces has unveiled the OS1, a backyard pavilion that integrates solar generation with hidden battery storage.
The company targets delivery of the OS1 units for 2027.
Pavilion Design and Configuration
Outer Spaces offers two distinct OS1 footprints to accommodate varying residential needs. The smaller configuration measures 12 by 12 feet and integrates six solar panels, yielding an approximate capacity of 2.5 kW. A larger 12 by 24-foot variant doubles the array to twelve panels, providing roughly 5 kW of generation. While no initial pricing is available, the company plans to present the system at RE+ in Las Vegas in mid-November.
pv magazine USA reported on 30 October 2026 that the pavilion is designed for outdoor kitchens, lounging spaces, offices, or gyms.
Battery Technology and Specifications
The OS1 stores energy using Horizon BladePack lithium iron phosphate modules. These units sit horizontally within a metal deck beneath the wooden flooring, keeping the hardware concealed from view. Each module carries a nominal capacity of 7.83 kWh and measures 1,470 mm in length, 368.6 mm in width, and 125 mm in height. At 72 kg (158.7 lb) per unit, the storage system remains manageable for installation within the pavilion’s structural frame.
| Specification | Value |
|---|---|
| Battery Chemistry | Lithium iron phosphate |
| Module Model | Horizon BladePack |
| Nominal Capacity per Module | 7.83 kWh |
| Maximum System Capacity (8 modules) | 62.64 kWh |
| Module Dimensions (L × W × H) | 1,470 × 368.6 × 125 mm |
| Module Weight | 72 kg (158.7 lb) |
The system supports expansion up to eight modules, reaching a total storage capacity of 62.64 kWh. This modular approach allows the battery bank to scale with the solar array size, accommodating both the smaller and larger OS1 configurations without altering the pavilion’s exterior design.
System Performance and Features
The OS1’s energy management system operates in three distinct modes: self-consumption, time-of-use optimization, and backup standby. It supports AC coupling, virtual power plant readiness, and PV black start capabilities. For generator integration, the system requires the Fox ESS Hub G2. The hardware is rated IP67 for dust and water resistance and carries a 10-year limited warranty.
Thermal management relies on passive cooling, with integrated heating activating when ambient temperatures drop below 0 C. The system operates within a range of −20 C to 55 C. Performance output is derated when temperatures exceed 40 C. The hybrid inverter, a Fox ESS H1-11.4-US, pairs with a 12 kW OS1 DC hub. With a single battery module, the rated AC output is 7.83 kVA and motor-starting capability is 80 A. When configured with multiple modules, these figures increase to 11.4 kVA and 160 A, respectively.
Funding and Background
- The Outer Spaces venture was established by the founders of the outdoor lifestyle company Outer.
- An $8 million pre-seed investment was spearheaded by Upfront Ventures, with participation from Unlock Venture Partners, Mucker Capital, and Genius Ventures.
- ESS News published contradictory details about the minimum storage capacity, citing figures of either 15 kWh or 7.83 kWh.
In a report dated 30 October 2026, pv magazine USA noted that the technical staff comprises ex-members of Anker Solix. The firm confirms that battery capacity allows for future expansion.
Additional reporting: pv magazine USA.
Source: pv magazine. This article is an original Luminity report based on the linked source.