Reuters: Singapore on Monday announced it had begun to feed solar power into its retail electric grid for the first time, as it seeks to reduce emissions and prepares to fully liberalize its electricity market. Singapore, one of the sunniest cities in the world, generates almost all its power from imported natural gas, with solar fuelling less than 1 percent. In countries like Germany and Japan, rooftop solar panels have helped boost capacity and bring record levels of renewable energy into the power mix....