Business Green: A new high speed train system planned for California could be run with zero emissions, according to a leading US energy consultant. The report by Navigant Consulting for the California High Speed Rail Authority found that generating the 3,380 Gigawatt hours a year of energy needed to run the Sacramento to San Diego link from renewable sources is “well within the capabilities of the state”. “Integrating renewable energy into the high-speed train project would be neither cost- …