As expected, net exports were much higher during hours of higher wind generation. This is in stark contrast to hydro, coal and gas generation.
Substituting the actual grouped production levels and average HOEP pricing and net export volumes, it's clear that as wind ouput increased in 2012, so did exports, while pricing declined.
Fortunately, 50% of the time wind output was less than 400MW.
A shared spreadsheet containing the figures behind these graphs also includes the data in monthly format, which may be informative to those interested in the data and comfortable with pivot tables.