Mumbai, Feb. 20 -- Maharashtra's longest metro corridor, the 37.9-km Kanjurmarg-Badlapur line, is being reworked, not to tweak its route, but instead to re-engineer its financial model. In mid-2025, the Mumbai Metropolitan Region Development Authority (MMRDA) invited expressions of interest to build the corridor through a Public Private Partnership (PPP) model. However, when the deadline ended in October 2025, no private firms had submitted any proposals. "The plan was to get this line made via Public Private Partnership model, but on not receiving a response, we have to revisit and explore other financial models," said a senior MMRDA official. The MMRDA is now considering other financial models, including Engineering, Procurement and Construction (EPC) and the Deferred Annuity model. Under EPC, the contractor manages every aspect of the project and is paid for the completed work. In the Deferred Annuity model, payments are staggered over time. The corridor is estimated to cost around Rs.18,000 crore and will reduce travel time between Kanjurmarg and Badlapur to 40-45 minutes. In its 2026 budget, MMRDA has earmarked Rs.500 crore for the project....