I am interested in using the hourly data output to compare performance of e.g. a fixed PV system vs. a 1-axis tracker. My particular interest is in the shape of the output curve vs. my local utility's demand curve (which tends to peak a bit after fixed systems peak).
Here's my question: What's the reference frame for the hourly output data, which runs from 1 to 8760 (no leap years, I guess)? Specifically: Does the data for hour 1 correspond to system performance between 12am and 1am on 1 January, local time zone (not daylight-savings adjusted)? And 8760 for 11pm to 12am, 31 December?