Agartala, Sept 21: Tripura Chief Minister Manik Sarkar on Tuesday commissioned a 21 MW gas-based power project in Tripura, which is expected to ease the electricity shortage in three northeastern states of Manipur, Mizoram and Tripura.The Tripura State Electricity Corporation Limited (TSECL) has executed the project at a cost of Rs 80 crore with the financial assistance from the North Eastern Coun