The president of the California Public Utilities Commission says that a simple heat wave could jeopardize the state’s increasingly fractured electric supply. Michael Picker, president of the CPUC since 2014, said the potential for problems is growing, but that the state currently lacks a plan to make sure all different kinds of users have access to reliable power into the future. “One of the biggest challenges is that we have a hard time convincing people that we have a problem,” Picker said…