
2025 Planet Positive Awards > Single Family Home > Winner
Kupono Hale
Hawaii Off-Grid Architecture & Engineering
Makawao, Hawaii
Kupono Hale is a fully off-grid tropical residence that exemplifies sustainability, resilience, and site-responsive design. Its signature parabolic roof, crafted from glulam beams and locally sourced Cook Pine, is oriented to optimize solar exposure, enhance airflow, and capture rainwater, while aligning with ocean views and prevailing trade winds. The home’s insulated composite concrete form (ICCF) walls, made from recycled styrofoam, provide thermal mass and insulation, reducing energy demand and reliance on virgin materials. Beneath, a polished concrete slab stores and regulates heat, reinforcing the home’s passive temperature control strategy.
Kupono Hale operates independently of municipal utilities, instead relying on a 10,000-watt photovoltaic system, solar hot water, and a 15,000-gallon rainwater catchment tank. Cross-ventilation, clerestory windows, and deep overhangs, help cut active cooling needs by over 80 percent and reduce artificial lighting needs by 60 percent.
By integrating efficient systems, recycled materials, and climate-responsive strategies, Kupono Hale minimizes environmental impact, and provides a blueprint for resilient, regenerative tropical housing.
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