Press Trust of India: Aiming at making the State capital a solar city, the Tripura Government is preparing a report to make mandatory the use of this alternate form of energy. “We have decided to make solar energy provision mandatory in buildings to make Agartala a solar city to keep it free from environmental pollution,” Tripura Science, Technology and Environment Minister, Joy Gobinda Debroy said. The present building rules would be changed to make use of solar energy mandatory in buildings to …