Related by context. Frequent words. (Click for all words.) 48 uneconomical 45 uneconomic 44 grossly inefficient 42 prohibitively expensive 41 ruinously expensive 41 prohibitively 41 theoretically 40 unsustainably 40 Artificially 40 commercially unviable 40 exorbitant 40 nonpolluting 39 prohibitive 39 prohibitively costly 39 economically unviable 39 storable 39 inefficient 39 economically advantageous 39 exorbitantly expensive 39 commodity 39 vast amounts 38 baseload electricity 38 ruinously 38 unviable 38 vast quantities 38 viably 38 simply 38 therefore 37 unsalable 37 unpractical 37 uncompetitive 37 cheaper 37 artifically 37 emit CO2 37 agrofuels 36 economically viable 36 artificially 36 large quantities 36 #.#/kWh [001] 36 undiversified 36 polluting fossil fuels 36 costless 36 undercapitalised 36 electricity 36 unsaleable 36 sheer folly 36 feedstock 36 cheaply 36 unsubsidised 35 heavily subsidized 35 cheap 35 inefficiently 35 Farmed fish 35 fossil fuel 35 fissionable material 35 thus 35 scarcities 35 Industrialized countries 35 arbitrage 35 Put bluntly 35 exhorbitant 35 featherbedding 35 unsustainable 35 economically feasible 35 Quite simply 35 externality 35 marginal 35 distortionary 34 unfeasible 34 scarce 34 infeasible 34 outrageously expensive 34 tonnages 34 overheads 34 desalinated 34 synfuels 34 bottomless pits 34 consequently 34 negative externalities 34 profitless 34 impractical 34 spinning disks 34 inexhaustible supply 34 unaffordable 34 surpluses 34 technologically feasible 34 biofuel 34 Vast amounts 34 essentially 33 exorbitantly 33 economically unfeasible 33 malinvestment 33 riskless 33 expensive 33 low 33 emitting greenhouse gases 33 raw materials 33 excess 33 imprudently 33 furphy 33 hydro lakes