The second unit of the fully off-grid accommodation facility ‘WEAZER’ opens this fall! With further-evolved technology, it will realize “living with nature” more freely and comfortably.
WEAZER Unit 2 to Open This Fall — Evolving the Future of Living with Nature
ARTH Inc. will open the second unit of “WEAZER,” its fully off-grid module that generates 100% of its electricity and water from natural sources, as a luxury accommodation in Nishi-Izu in the fall of 2025.
The new model marks a major evolution from the first—advancing both hardware and software to deliver greater architectural freedom, higher energy efficiency, and smarter living that redefines what it means to live in harmony with nature.
A Sanctuary Overlooking Suruga Bay
The new WEAZER will rise on a spectacular site in Nishi-Izu, offering uninterrupted views across Suruga Bay.
Here, the horizon stretches endlessly before you while the sounds of waves and birds weave a tranquil rhythm—an environment that engages all five senses.
The property features natural valleys and streams flowing through the grounds, providing visitors with deep restoration and peace.
Architectural design is handled by SUPPOSE DESIGN OFFICE, renowned for blending Japanese tradition with contemporary sensibility.
On a 1,000 m² site stands a 150 m² residence designed for only one group per day—an ultimate expression of privacy and calm.
Meditation, Stillness, and Renewal in Nature
Within a reflecting pool facing the sea lies a tatami Zen space where guests can meditate or practice yoga surrounded by the elements.
Time flows differently here—disconnected from the everyday, embraced by silence.
A private sauna, enveloped in the sounds of the ocean and forest, offers another layer of rejuvenation—a rare moment to feel “tuned” with nature in its purest form.
Advancing Off-Grid Technology
WEAZER operates entirely independent of public utilities, integrating solar power generation and battery storage, water systems that draw from rain and atmospheric moisture, and original wastewater treatment technology.
It can be installed even in remote mountain or coastal regions, offering a new lifestyle model grounded in coexistence with nature.
In this next-generation model, WEAZER’s defining feature—complete self-sufficiency powered by the forces of nature—has evolved significantly in both hardware and software, achieving greater efficiency, resilience, and comfort than ever before.
[Hardware] The Heat Circulation System — Redefining Energy Efficiency
In modern times, energy is often equated with electricity—an efficient means of transmission suited to urban life.
Yet much of the electricity we consume generates heat for air conditioning, heating water, or cooking, while vast sources of natural heat around us remain untapped: geothermal warmth, bathwater, exhaust, and more.
WEAZER’s completely off-grid design is founded on the principle of local production and local consumption of energy.
ARTH’s proprietary “Heat Circulation” system reclaims heat from daily life—showers, baths, or HVAC exhaust—and reuses it for heating, cooling, and hot water, achieving up to three times the energy efficiency of a conventional home.
By transforming discarded heat into new energy, WEAZER demonstrates how sustainability can be achieved not through excess, but through elegant reuse—a quiet innovation for the off-grid future.
[Software] AI-Controlled Off-grid HEMS — The Intelligent Core of Self-Sufficient Living
Alongside advancements in hardware, WEAZER’s software has evolved into a truly intelligent energy management system.
Traditional HEMS (Home Energy Management Systems) were designed primarily to monitor usage, but in a fully off-grid environment like WEAZER, observation alone is not enough. What’s required is autonomous, adaptive control.
ARTH’s proprietary “Off-grid HEMS” uses AI to analyze real-time data—weather forecasts, occupancy, user behavior, and past consumption patterns—to predict upcoming energy demand and production.
When a potential shortage is anticipated due to weather or higher usage, the AI automatically adjusts air conditioning and other settings to maintain comfort while preventing depletion of resources.
This predictive control enhances system resilience and ensures stable, sustainable operation in all conditions.
The user interface has also been redesigned to be dynamic and intuitive. Guests can visualize power generation, consumption trends, and even their own environmental impact—turning sustainability into an engaging experience rather than a constraint.
In essence, WEAZER’s Off-grid HEMS serves as the intelligent core of the module—where technology, design, and environmental empathy converge.
