Bloomberg Blackstone Group LP’s quest to be the first company to build back-up power plants in southern Germany faltered after the European Commission queried whether the nation needs the facilities at all. The world’s biggest private equity firm’s PQ Energy unit says an EU antitrust probe could delay a bid to build new reserve power plants in Germany’s industrial …

  Bloomberg Oil’s recovery is helping ease the pain of shrinking output by China’s biggest energy producers. PetroChina Co., the country’s largest producer, reported first quarter earnings swung to a profit thanks to the surge in prices, even as total output fell 6.3% from a year ago. China Petroleum & Chemical Corp., the refining giant known as Sinopec, saw net …

  Bloomberg Wind may have just gotten a boost in the biggest US electricity market. New rules requiring power producers to ensure supplies are available all year round are giving some an incentive to use more wind. The first test will come at next month’s auction by PJM Interconnection LLC — the grid operator covering the region from Chicago to …