Reuters: Solar companies’ success in ramping up new production lines and factories could leave the fast-growing renewable energy market awash in solar panels next year, driving down prices and profit margins in the nascent industry. The recent move by this year’s hottest solar market, Spain, to cut its cap on subsidies for new solar panels has sparked fears that big producers may see their selling prices drop by as much as 20 percent as they scramble to sell out their production. Those …