In 2019, UT Austin and Lockheed Martin developed a hydrogel system producing 12 times more water than commercial solar stills. 7 years later, its 3.6 L/h/m² rate remains a striking benchmark in solar purification

Seven years after the original 2019 report, the reported 3.6 liters per hour per square meter remains an interesting benchmark for understanding the potential of solar purification research. The lasting value of the work is not simply the numerical comparison with commercial solar stills but the broader principle behind it: materials can be engineered to make renewable-energy technologies more productive.

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