Solar Power Opex, also known as solar power as a service, refers to a financing model where a solar power system is installed and operated by a third-party provider, who retains ownership of the system and bears the upfront costs. The customer, usually a business or organization, pays a predetermined monthly or annual fee for the electricity generated by the solar system. This fee is typically lower than the electricity cost from the grid, providing the customer with immediate cost savings.

The solar power Opex model allows businesses to adopt solar energy without the need for significant upfront capital investment. It shifts the responsibility for system maintenance, monitoring, and operation to the third-party provider, relieving the customer of these tasks. It also provides a predictable and stable energy cost structure over the agreement term.