St. Louis became the 47th American city to set a goal of getting all of its electricity from clean, noncarbon sources with a vote by local lawmakers Friday — a significant watershed given its long-standing ties to the fossil fuel industry. The unanimous vote by the Board of Aldermen commits the city to transition to solar, wind and other renewable energy sources by 2035. The city will assemble a group — made up of workers, environmentalists, business people, utility representatives and others — to draw up a plan by December 2018 for reaching the benchmark.