The Problem:

Here are some questions about this plot:

• Are the axes linear or logarithmic?
• What are the units describing each axis?
• How much non-residential capacity was installed during the 3rd quarter of 2012?
• Which of the three types of PV installations has been growing steadily over the time plotted?
• What is a reasonable estimate of total residential capacity install through all of 2011?
• What is the pattern in the installation of Utility scale solar capacity? -- why do you think this is?
• What is the rate of growth of residential capacity during the year of 2012?