CAPEX Model is one of the models followed by Solar Energy Corporation of India (SECI) for solar rooftop installation. Here, the entire system is owned by the rooftop owners. Responsibility of O&M for the system lifetime (25 years) is also with the rooftop owner. Developer is responsible for installing the system and initial 2 years O&M. In this case, the developers are selected through a system cost-based reverse bidding. Selected bidders are offered 30% subsidy on the system cost (exclusive of taxes). CAPEX and RESCO Models are the two models followed by SECI.