Most companies pay for commercial solar projects with cash, loans, or power purchase agreements (PPAs). Like any investment, a cash purchase offers the quickest return on investment, reduces the timeline from agreement to installation to savings, and maximizes tax incentives. Low-interest loans, however, are a great alternative for those who do not wish to make an investment as a lump sum, and there are multiple options available that one of our experts would be happy to walk you through. PPAs are very similar in structure to a lease. They typically do not require any payment for the installation. The building owner will only pay for the power the system produces. This will provide the building owner with cheaper electricity than from the utility company.