Complex sentence: For energy efficiency, trees were retained to cast shade with weather protection and a shading system used to cover parts of the track and the track is painted white to maintain track ice tempeartures while minimizing energy demand on the refrigeration system.
Split into simpler sentences: For energy efficiency, trees were retained to cast shade with weather protection and a shading system used to cover parts of the track. The track itself is painted white to maintain low tempeartures while minimizing energy demand on the refrigeration system.