Tomorrow, voters in Colorado will be deciding an initiative aimed at promoting the use of renewable energy by consumers.  But while such calls for increased renewables has an environmental appeal, some like James Taylor of Environment and Climate News believe costs make it prohibitive:  “Renewable energy is very expensive. Arizona, for example, allows consumers to choose the source of power they want, and 99.9 percent have elected to use conventional sources because of cost. Ditto for New York and Massachusetts which have about 1 percent average participation between them. Maine residents oppose construction of new wind farms, and its doubtful even new initiatives in California, Kansas and Colorado will buck this lackluster trend.”