I am a new Harman XXV owner. Ordered the stove in May, had it installed mid-July. I am wondering if anyone had a Excel spreadsheet that they use to track pellet consumption throughout the winter. Since this is the first year burning pellets I'd like to have a good idea of what I used, and what I'll need for next year. I was thinking the spreadsheet should include stove feed rate settings, avg. outside temperature, and obviously approximately how many lbs. of pellets were burned that day. It's probably a bit overkill, but again I'm interested in finding out what I'm really using. Thanks for any help or insight I receive.