Part 4/8:
The Ingenious Conversion of Oil Caves
The transformation of the oil caves into a heat storage solution involved extensive labor and careful planning. After being sealed for over fifty years, the caves required thorough cleaning to remove residual oil, followed by a complex piping system to facilitate the movement of heated water. Filled with water capable of reaching 95 degrees Celsius, these man-made caverns now function as thermos-like heat batteries, storing energy generated during warmer months and releasing it when demand increases in winter.