Hinren Engineering is dedicated to solving challenges in water, energy, and food through simple, local, and sustainable solutions. We believe the answer lies right above us—the rooftop. Our Philosophy: “Catch energy and water where it falls.” Instead of losing resources in transmission, we tap them at the source. Sunlight, rain, and waste—all abundant and underutilized—can be transformed into clean power, water, food, and fuel with the right engineering. Our Solutions: 1. Solar Power: Harnessing rooftop sunlight for clean, renewable electricity. 2. Agri-Voltaics: Growing food under solar panels for dual land use. 3. Rainwater Harvesting: Capturing and storing rooftop rainwater for direct use. 4. Groundwater Recharge: Directing excess rainwater into recharge wells so it percolates back into the earth, replenishing aquifers and securing long-term water availability. 5. Biogas: Converting household waste into usable cooking gas, with nutrient-rich slurry returned to rooftop gardens or agri-voltaics. 6. Cool Roofs: White-painted roofs that reduce heat absorption, improve water runoff, and keep homes cooler. Together, these elements create the “Sustenance Roof”—a decentralized, efficient system that allows homes, businesses, and communities to become self-sufficient and climate-friendly. At Hinren, we see rooftops as the most accessible starting point for a greener future—where resources are used optimally, locally, and sustainably.