Skoog Architecture — Innovating for a Thirst-Free World.
Published February 4, 2026 | Version v1
Introduction and Open Source Implementation
The Skoog Buoy Capillary Sweating Liana (SCSL) is the world’s first zero-electricity industrial-scale water-from-air generator (Confirmed by several independent sources), operating 24/7 and ready for immediate coastal deployment and implementation. It is an offshore, zero-electricity, fully mechanical system for industrial-scale freshwater production from humid coastal air. The technology is developed within Skoog Architecture and released as open source under Skoog Open Marine Technology (SOMT), licensed under Creative Commons CC BY 4.0 with no patents, no licensing fees, and full public technical documentation available to enable immediate global implementation using local resources and creating local labor opportunities.
For more technical details and FAQ, see: https://www.skoogmarine.com/faq/
Thermodynamic Process and Deep-Sea Cooling
The system extracts freshwater directly from atmospheric humidity using passive thermodynamic processes without desalination, without chemicals, without brine discharge, and without conventional mechanical pumping. It utilizes the temperature difference between warm, humid air and cold deep-sea water (approximately 4°C at depths of 200–1000 meters) to drive continuous 24/7 condensation.
The Capillary Sweating Liana and Wave Circulation
A closed-loop flexible polymer liana extends from the buoy into deep water to access stable, cold temperatures. By utilizing hydraulically balanced liquid columns, only minimal energy input is required to maintain circulation, as no water needs to be lifted against gravity. Ordinary water circulates within the liana as an isolated cooling source, transferring thermal energy to a capillary matrix where massive condensation is generated, remaining entirely separate from the produced fresh water. Under normal operating conditions, natural wave motion powers a wave pump to maintain the flow, with battery-supported backup reserved for rare instances of total calm.
Passive Airflow and Solar Chimney Mechanisms
Humid air is drawn into the buoy and driven upward through a solar chimney system by a coupled set of passive mechanisms acting simultaneously: solar heating of the chimney during daytime, continuous latent heat release during condensation, partial heat retention and recovery (typically on the order of 10–25%), vertical air density gradients generated by thermal variation, and controlled internal geometry that prevents stagnation. These combined effects create a self-sustaining internal airflow that operates 24/7, including at night and during low solar input conditions, independent of external wind.
Skoog Aerofoil Filter Accelerator (SAFA)
Before entering the condensation zone, the airflow passes through the Skoog Aerofoil Filter Accelerator (SAFA), a passive aerofoil-based flow-conditioning module. SAFA splits the airflow into two streams: one passing through the condensation matrix and one through a bypass channel. The bypass flow accelerates over an aerofoil surface, creating a localized low-pressure region (Venturi effect), which reduces resistance and actively draws air through the matrix. After passing the matrix, the two streams reconverge within guided channels in a braided chimney structure, generating an ejector effect that further accelerates and stabilizes the upward airflow without external energy input. The internal chimney geometry ensures directed flow, prevents stagnation, and maintains high volumetric throughput.
Biomimetic Condensation and Capillary Transport
Condensation occurs on a biomimetic capillary matrix designed with a hierarchical branching structure inspired by biological systems such as the human bronchial tree. This architecture maximizes surface area, ensures even airflow distribution, and maintains continuous film condensation. The condensed water is transported via capillary action and gravity into a sealed storage reservoir located above the waterline.
Thermal Piston and Autonomous Delivery
A portion of the latent heat released during condensation is recovered through passive heat exchange and transferred to the stored water. As the water temperature increases, it undergoes continuous volumetric thermal expansion (up to approximately 0.43% around 30°C). This expansion, combined with hydrostatic pressure from the elevated reservoir and the continuous inflow of condensate, creates a sustained hydraulic displacement effect (“thermal piston”). This enables freshwater to be delivered autonomously to shore through a fully water-filled pipeline over distances of approximately 20–30 km without conventional mechanical pumping, assuming appropriate pipe dimensioning.
Capacity and Scaling
System capacity scales with condensation surface area. A 100 m² matrix produces approximately 2,400 liters per day, a 500 m² matrix approximately 12,000 liters per day, and an industrial-scale 5,000 m² system with a 12-meter buoy and an 18–20 meter chimney can produce up to approximately 500,000 liters per day under favorable environmental conditions such as high humidity and stable thermal gradients. Multiple buoy units can be connected in clusters; for example, a cluster of 11 industrial units can produce on the order of 5 million liters per day.
Large-Scale Infrastructure: The Skoog S-Vessel
The concept can be further scaled through vessel-based infrastructure referred to as the Skoog S-Vessel. The S-Vessel is a tanker-class offshore platform (approximately 400 meters in length) functioning as a floating water production hub. It integrates multiple independent chimney modules and multiple deep-sea thermal lianas within a single coordinated system. Each module operates as an independent airflow and condensation unit, enabling scaling through replication rather than increased system complexity. In favorable conditions, total production can reach millions to tens of millions of liters of freshwater per day. The S-Vessel can supply coastal regions over distances of approximately 30 km and can also function as an offshore freshwater hub.
System Design, Materials, and Longevity
The system operates without continuous external electricity. A battery system (e.g. LiFePO4) is used only for auxiliary functions such as anti-fouling measures, control systems, and backup circulation during rare periods of total calm. The design minimizes mechanical complexity by eliminating conventional pumps, pistons, rotating machinery, and consumable filtration systems. The design is optimized for construction using local resources and materials, ensuring that implementation directly supports local labor and regional economic development. Structural components are based on corrosion-resistant materials such as HDPE and HMPE, with a design lifespan on the order of decades (up to approximately 50 years under appropriate conditions).
Environmental Impact and Post-Treatment
The system produces no brine, no chemical waste, and no desalination byproducts. Freshwater is generated directly from atmospheric moisture via phase change. Post-treatment processes such as mineralization (e.g. calcium and magnesium addition) and UV sterilization can be applied onshore depending on end-use requirements.
Geographic Suitability
The Skoog Buoy is suitable for coastal regions where deep ocean water at depths of approximately 200–1000 meters is accessible near shore. This includes regions such as East and West Africa (e.g. Namibia, Angola, Somalia, Kenya, Tanzania), the Arabian Peninsula (e.g. Oman, Yemen, Saudi Arabia, UAE), South and Southeast Asia, the Pacific coast of South America (e.g. Peru, Chile, Ecuador), Australia (particularly the west coast), Mediterranean regions (southern Spain, Italy, Greece, North Africa), volcanic island systems (e.g. Canary Islands, Cape Verde, Azores, Mauritius, Réunion), the Red Sea and Gulf of Aden, Central America and the Caribbean, southwestern North America (e.g. Baja California), and parts of Oceania.
Primary Use Cases
Primary use cases include humanitarian drinking water supply for coastal populations lacking infrastructure, offshore green hydrogen production requiring ultrapure water for electrolysis, offshore freshwater bunkering and tank stations for maritime use, disaster relief and emergency water supply, irrigation and regenerative agriculture in arid coastal regions, off-grid coastal communities, industrial process water in water-stressed regions, and large-scale ecological restoration including reforestation and anti-desertification projects. All implementations are designed to be executed via local resources where sustainable jobs are created within the community.
About the Inventor
Göran Skoog is a Swedish philanthropist and the founder of Skoog Buoy, Skoog Open Marine Technology (SOMT), and Skoog Architecture. He has released 11 inventions as open source under the Creative Commons CC BY 4.0 license, all adhering to a shared philosophy of zero external energy, purely mechanical operation, and environmental sustainability. By intentionally waiving patents and avoiding costly licensing agreements, he ensures these technologies remain accessible for the benefit of humanity.
Important Technical Clarification
The stated production level of approximately 500,000 liters per day refers to industrial-scale single-buoy configurations and represents the original design cap under favorable environmental conditions. Actual output varies depending on humidity, temperature gradients, airflow dynamics, and system geometry, though theoretical maximum values can exceed this cap. System performance depends on the interaction between thermal processes, airflow control, structural design, and environmental conditions.