Replaced Oil With Bioheat
In Fall 2013, Wesleyan began purchasing B20 bioheat (80% #2 oil, 20% recycled cooking oil) from Portland-based Hale Hill Biofuels for campus buildings run on oil.
Bioheat has replaced nearly all Wesleyan's oil purchases and has reduced GHG emissions by 200 tons annually.
MISTAKES & LESSONS LEARNED
If you want to switch to bioheat, know that you can't go much above B20 without damaging existing boilers. In cold temperatures, if it's above 20% cooking oil, it can congeal. Look into the source of your bioheat, since some are from virgin oils and not used cooking oil.
We'd like to pilot a building with B100 (100% waste cooking oil).