A recent study by the Indian Institute of Science indicates that Bengaluru's upcoming Namma Metro Blue Line could fulfill its entire energy requirements through solar power. The Bangalore Metro Rail Corporation Limited (BMRCL) acknowledges the potential but stresses that achieving this goal will necessitate significant policy changes and infrastructure enhancements. The Blue Line, which will span nearly 55 kilometers and connect Central Silk Board to Kempegowda International Airport, is expected to consume around 152 GWh of electricity annually once fully operational. The study suggests that installing solar panels on various structures, including station rooftops and viaducts, could generate sufficient energy to meet this demand. Specifically, an installed capacity of 83.3 MWp would be needed, with 30 MWp of rooftop solar capacity potentially deployable immediately. Currently, BMRCL produces 15 MW of solar energy, which is set to increase to 20 MW with the Pink Line integration. The financial outlay for the initial phase is estimated at ₹48 crore to ₹63 crore, with projected savings exceeding ₹2,600 crore over the project's lifespan, alongside significant reductions in carbon emissions.