It's doubtful that anyone ever turns on a light in California and thinks about the Independent System Operator.
But the ISO provides oversight to the power grid in California, to make sure the country's most populous state always has electricity available. Now there's a proposal, backed by Governor Jerry Brown and others, to share oversight of the grid with other western states.
That has drawn criticism from a number of groups. But it is praised by others, including the Union of Concerned Scientists.
Laura Wisland, Senior Manager for Energy at UCS, visits with details.