Business: Principal Solar, Inc. is a solar power company that is building and operating utility-scale projects. Principal Solar has an entrepreneurial growth strategy: to identify attractive solar projects at an early stage in their development, complete their construction, and bring them on line and selling power via long-term power purchase agreements (PPAs). The Principal Solar Institute, an educational organization created by Principal Solar, Inc., is dedicated to spreading solar knowledge to the critical stakeholders in the solar and broader electricity markets. The company is building the world’s first online library dedicated exclusively to the field of solar energy.