It’s an exciting and delicate time to be an electric vehicle charging company. Three years ago, the US government opened the funding spigot as Congress, with support from the Biden administration, directed $7.5 billion in funding to build tens of thousands of public charging stations. Those stations would ease the transition from gas-powered cars to electric ones, policymakers argued, allowing the government to reach its goal of making at least 40 percent of car sales zero-emission by 2030. No...