Wind farms, cellulosic ethanol, and large-scale solar power plants are on close to being able to compete with fossil fuels without the need for subsidies, according to a study released Wednesday.  The group’s study, “What’s Next for Alternative Energy?” tries to forecast the prices and market penetration of alternative-energy technologies by the year 2020, picking possible winners and losers. Some technologies, according to the report, are poised to grow much faster than generally assumed, even if the government doesn’t encourage them with new subsidies. Read more about alternative fuels study.