Universally, cost is a key factor in determining the commercial succes
s of new technologies. Corporate research laboratories have developed
countless technically exciting processes, only to see them put aside b
ecause they were too expensive for their targeted markets to bear. Tec
hnical cost modeling is a methodology for simulating the cost of devel
opmental technologies. It is a useful tool for assisting R&D managemen
t, both for the selection of program alternatives and for the identifi
cation of ''economic bottlenecks'' within a given technology. Technica
l cost modeling takes a science-based, bottoms-up perspective on the c
ost of a technology. First-principle theories are coupled with establi
shed commercial practices to produce models that are robust, realistic
and useful.