Related by context. Frequent words. (Click for all words.) 73 economically viable 66 economically feasible 65 commercially feasible 62 financially viable 60 viable 56 technically feasible 55 economically unviable 54 commercially 54 feasible 54 uneconomic 53 uneconomical 52 profitable 51 unviable 49 commercialized 48 financially feasible 48 technologically feasible 46 commercialize 46 successfully commercialized 45 manufacturable 45 cellulosic biofuels 45 viability 44 realizable 44 Cellulosic ethanol 44 cellulosic 44 cellulosic ethanol 44 profitably 44 environmentally benign 43 prohibitively expensive 43 environmentally sustainable 43 marketable 42 commerciality 42 economically unfeasible 42 environmentally sound 42 patentable 42 prohibitive 41 workable 41 hydrogen powered 41 unfeasible 41 sustainable 41 bioplastic 41 bankable 41 commercializing 41 recoverable 41 carbon neutral 40 self sustaining 40 transgenic animals 40 environmentally friendly 40 biofuel 40 suitable 40 biobutanol 40 economical 40 sufficient quantities 39 infeasible 39 environmentally harmful 39 extractable 39 cellulosic biomass 38 greenfields 38 PEM fuel 38 greenfield 38 experimental 38 nonpolluting 38 salable 38 feasibility studies 38 cellulose 38 bio diesel 38 implementable 38 worthwhile 38 renewable 37 jatropha 37 useable 37 usable 37 hydrogen fuel 37 carbon capture 37 commercialization 37 achievable 37 biorefinery 37 zero emission 37 biodegradable 37 biodiesel 37 prototypes 37 operate profitably 37 unprofitable 37 Jatropha 36 pluripotent 36 graphene 36 prototype 36 thorium 36 sufficient 36 tenable 36 spintronics 36 unexploited 36 biofuels 36 venture 36 scientific breakthroughs 36 monetising 36 hydrogen 36 successfully commercialize 36 alternative energies 36 semiconducting 36 butanol 36 feasibility study