How do I see the output of my renewable system?

Your electric bill will not show any output of energy your system produced. Your bill will only show the difference between the energy generated at your site and the energy consumed from CEC's distribution system; hence, the term Net Metering. Most renewable systems sold today have equipment with access to renewable generator readings that will estimate the output of the system. You will need to consult the manufacturer/installer of your system to determine if this is available.