SOLAR is Stony Brook University's primary administrative system used by students to register for classes, print schedules, view and pay bills, view transcripts, update personal information, report student employment hours, and more. Steps to Enroll To reserve your space, complete these steps in the SOLAR System using your Stony Brook ID number and password by November 1 for Spring 2023 and May 1 for Fall 2023 or the date on your letter of admission. Pay your $150 Tuition Deposit Pay your $200 Campus Housing Deposit (if applicable)* Pay your $300 Orientation Fee.