IF
you can use the wast heat; ICEs become WAY more efficient..!
Water heating, house heating, Cooking... what else?
Heat storage in sand.
Cooling via ammonia absorption refrigeration.
More info from here on:
https://ecomodder.com/forum/showthre...tml#post695460
I NB that as pgfpro ius running mostly free fuel and leaner than bulimic skeleton he could make money selling power to the grid, all while heating his whole house.