The German state-owned development bank KfW and the Mumbai Metropolitan Region Development Authority (MMRDA) have reached an agreement to fund more than Rs 8.5 billion to help the development of urban infrastructure. In addition to the loan from the Frankfurt-based bank, the development authority would also raise around Rs 3.65 billion from its own resources as its equity contribution for these sustainability initiatives. The primary purpose of the funds obtained from KfW and MMRDA's resources is to sponsor a range of sustainable development initiatives in and around the Mumbai Metropolitan Region. To address environmental issues and improve the quality of life for inhabitants in the busy metropolitan area, these projects include the creation of green corridors, solid waste management systems, recycling and reuse facilities, and the promotion of renewable energy alternatives. The MMR Urban Infrastructure Amenities Project, which is being carried out by the government, is estimated to cost roughly Rs 12.15 billion in total. The MMRDA would use its capital to provide Rs 3.65 billion of this. Previously, the development authority of the Maharashtra government received an in-principle clearance from KfW for two loans totaling more than Rs 47.67 billion to assist two significant mass transportation projects in Mumbai. These projects are Metro lines 4 and 4A, which connect Wadala in central Mumbai to Kasarvadavli in Thane and Gaimukh in Thane, respectively. These completely elevated lines, which will have 32 stops throughout their 34.82 km length, will ease the daily suffering of millions of commuters and contribute to a cleaner, less congested city. The 545 million-euro loan approved by KfW is the highest financing sanctioned to any Indian entity ever. As soon as the development authority issued the offer with the necessary permissions from the financial partner KfW, the agreement with the German lender came into force. The Mumbai Metropolitan Region's infrastructure development is under the purview of the Maharashtra government's MMRDA. One of the main active projects being worked on by MMRDA is the construction of 14 separate metro line projects in Mumbai and MMR, which will result in a considerable improvement in the public transport system. With a total length of 337 kilometres, these metro lines represent the world's longest concurrently developing metro network by a single development agency.