Factors to Consider When Developing a Solar Module Spares Plan

Nearly all commercial or utility-scale solar power projects are provisioned with spare solar modules as part of the initial module purchase. Though no standard spare quantity is required, the industry has generally accepted 1% as a typical number of excess modules to provide an allowance for shipping and installation breakage and maintenance spares sufficient to replace anticipated failed or damaged modules during the first years of operation.

There are many factors to consider when developing a solar module spare plan. Taking into account these factors will aid in achieving project operational and financial objectives. In this article, E3’s solar project manager and subject matter expert, Daniel Tarico, shares his advice for solar developers, facility operators, and owners.