The grid operator began the first phase of its 2012\/2013 transmission planning in an April 2 workshop. Not only is it considering the continued lack of power from the San Onofre Nuclear Generating Station in figuring how to keep the grid reliable, it\u2019s also set to examine the impact of any shutdown of the Diablo Canyon facility. \u201cLocal and system grid reliability due to the absence of these two baseload nuclear generating stations will be evaluated,\u201d noted the California Independent System Operator\u2019s study plan. The effect of taking other power plants cooled by ocean water off the grid also will be part of the study, noted the grid operator. State law requires those power plant owners to phase out the old technology or switch to water-saving cooling techniques. CAISO \u201canticipates the policy will cause the majority of gas-fired generating units using once-through cooling to come offline in order to retrofit or repower using alternative cooling technologies, or retire,\u201d according to the grid operator. It also notes that the policy could affect the two nuclear facilities, which, when running, are permitted in total to consume 4.8 billion gallons of seawater per day. The plan also identifies reviewing the South Coast Air Basin, where air quality is impacted by power plants. The dearth of available air pollution emission offsets in the South Coast Air Quality Management District has seriously constrained new power projects. The South Coast part of the report goes to the governor and Legislature. Renewable energy requirements are also part of the transmission planning process. The grid operator breaks the renewables requirement down into two objectives. First is to support delivery of the 33 percent renewables portfolio standard \u201cover the course of all hours of the year.\u201d Second is to support resource adequacy deliverability standards outside the grid operator\u2019s authority \u201cneeded to achieve the 33 percent energy goal,\u201d according to the plan. Outside resources currently have \u201cno way\u201d to obtain resource adequacy status in the state. The plan is not just the grid operator\u2019s, but a collaboration of agencies, including the California Energy Commission, California Public Utilities Commission, and State Water Resources Control Board. It\u2019s expected to be voted on March 2013.