Lighting is central to the investor-owned utilities energy efficiency plans for 2009-2011. Southern California Edison plans to achieve 48 percent of its kWh energy savings through lighting. A breakdown of San Diego Gas & Electric’s plan shows it aims to achieve 73 percent of residential energy savings through lighting measures and 52 percent of non-residential energy efficiency through lighting. Pacific Gas & Electric looks to lighting for 91 percent of residential energy savings and 48 percent of non-residential energy efficiency improvement.