IIT Bombay researchers propose bottling sunlight in the summers to use as heating in the winter

IIT Bombay researchers propose bottling sunlight in the summers to use as heating in the winter

Ankush Banerjee Mumbai 23 Jun 2025 For nearly a quarter of the year, temperatures in the cold Himalayan north plunge well below freezing. To keep warm, families in places like snow-covered Leh rely on diesel heaters, which are carbon-heavy machines powered by costly fuel that must be trucked in over perilous winter roads. But what if the same intense summer sun that bathes these mountains could be captured and saved for later, ready to warm home…