Of the $1.9 billion in estimated costs to upgrade transmission lines that would deliver wind energy from the Tehachapi area, Southern California Edison plans to spend $125 million over the next six years. In an October 13 Securities and Exchange Commission filing, the utility said it expects total capital investments to be $11.3 billion in generation, transmission, and distribution through 2010. Of that, $7.6 billion is earmarked for the distribution system, $2.1 billion for power plants, and $1.6 billion for transmission. The utility also told federal regulators it expects earnings next year of $1.75\/share. Edison said that the growth in earnings is driven by rate-base growth. Breaking down its planned investments, over the next six years Edison expects to spend $125 million for connecting wind farms in the Tehachapi region to the grid and another $125 million for other renewables interconnections. It also intends to spend $150 million on transmission series capacitors and $550 million on other transmission expansion. The utility, however, estimated that upgrades needed to deliver Tehachapi power would run to $1.9 billion. ?Edison reported that 500 kV rather than 230 kV transmission system upgrades would be needed to support the 4,060 MW of Tehachapi wind generation identified in the California Energy Commission?s Plausible Resource Scenarios,? according to a California Public Utilities Commission decision issued in June (<i>D04-06-010<\/i>). The $7.6 billion in distribution investments would be used for expanded infrastructure to serve customer growth as well as infrastructure replacement, according to Edison spokesperson Gil Alexander. Building the Mountainview power plant would consume a big portion of the $2.1 billion for generation investments, he added. Another chunk, expected to be upward of $700 million, would go to new steam generators for the San Onofre Nuclear Generating Station. If approved by the CPUC, capital spending would increase the utility?s rate base from $9.7 billion this year to $14.2 billion in 2009, with a return on equity currently pegged at 11.6 percent, according to the SEC documents. Planned expenditures are expected to be funded from utility-generated cash.