Technical Considerations for Realizing a Return on Your Investment at Solar Power International Attending Solar Power International (SPI) is an exercise in prioritizing your goals. The sheer volume of potential activities presents a decision-making challenge for most attendees. SPI, for most companies, also represents a significant investment of time and resources. Sourcing and utilizing training to contribute to revenue generation must be top on the list of ways to realize a return on that capital. Fortunately for SPI attendees, training comes in