CAPEX is mainly refers to Capital expenditure or capital expense that is expense where the benefits continues over a long period, rather than being exhausted in short period.They are used by company to acquire physical assets.
CAPEX mode is the most common business model for solar deployment in India. In this model the consumer purchase the solar system, by making 100% of the payment upfront or financing the system through a bank or through a developer. Responsibility of O&M for the system lifetime is also with the consumer. Developer is responsible for installing the system and O&M for the period mutually agreed by the company and the developer.