3m hutchinson plant focuses on heat recovery and cogeneration during wide energy efficiency assessment summary undertook a at its minnesota to identify opportunities specific that s operations utility requirements yet potentially applicable similar plants processes in other regions of the country staff developed four separate implementation packages represented various combinations projects identified one package was chosen for based relative aggregate payback periods individual this included chiller consolidation air compressor cooling improvements steam turbine used boiler two thermal oxidizers estimated could save 5 7 million kilowatt hours per year kwh yr electricity 214 499 british units mmbtu natural gas fuel oil by implementing savings measures are tape manufacturing facilities use volatile organic compound voc destruction doe industry partnership us department