Short facts
Biomass: ...growing the amount of cellulose required to shift US electricity production to biomass would require farming - an area the size of 10 Iowas.
Solar: Each run-of-the-mill 1,000-megawatt photovoltaic plant will require about 60 square miles of panes alone. In other words, the largest industrial structure ever built.
Wind: ... the wind equivalent of a typical utility plant would require 300 square miles of turbines plus costly transmission lines from the wind-scoured fields of, say, North Dakota
The cost of the alternative plans would be prohibitive.
The better plan would be to develop a safer operations and to provide Nuclear Power Plants with a better way to dispose of the spent rods. Nuclear is the best way.