Solstice Storage
Solstice Storage develops high-temperature solar-thermal systems that replace fossil fuels in industrial processes. The system uses concentrating solar collectors and thermal sand storage to deliver heat up to 1000°C on demand, day and night, enabling factories to run around the clock on renewable heat. The system is built from sand, steel, and sunlight, and integrates directly into existing industrial process heat loops.
- Clean Technology
- Energy
- Hardware
Funding
Founders
Founder details are not available yet.
Product
Problem
Approximately 75% of industrial heat is still produced by burning fossil fuels. Direct electrification of high-temperature processes loses significant energy in conversion and is expensive to run, while renewable alternatives such as wood chips and bio-oil are costly and hard to scale.
Solution
Solstice develops high-temperature solar-thermal systems that replace fossil fuels in industrial processes. The system uses concentrating solar collectors to convert sunlight into high-temperature heat, which is then stored in thermal sand storage. This stored heat is available on demand up to 1000°C, enabling factories to run around the clock on renewable heat even when the sun isn't shining. The system is built from sand, steel, and sunlight—simple, low-cost materials that are easy to maintain and keep downtime to a minimum. The stored heat integrates directly into existing industrial processes at high temperature, so factories can stop burning fuel to generate heat.
Target Audience
Primary customers are industrial manufacturers that require high-temperature process heat (up to 1000°C) and currently rely on fossil fuel combustion, particularly those seeking to decarbonize their operations without expensive electrification retrofits.
Features
- Concentrating solar collectors that concentrate sunlight into high-temperature heat at the point of use
- Thermal sand storage capable of storing heat at up to 1000°C for on-demand industrial use, day and night
- Optional secondary charger that uses grid electricity (which can come from wind) for system charging beyond direct sunlight
- Non-toxic, non-flammable, chemically inert sand storage with no risk of thermal runaway or chemical fires, allowing installation near industrial sites or homes
- Designed for direct integration with existing industrial process heat loops with minimal modification