A company is developing a system which can heat up and melt ice on roads in the winter. This system is called 'energy storage'.
During the summer, the black surface of the road will heat up in the sunshine.
This energy will be stored in a large amount of soil deep under the road surface.
Pipes will run through the soil. In winter, cold water entering the pipes will be warmed and
brought to the surface to melt ice.
The system could work well because the road surface is black.
Suggest why