The Caltrain Electrification Project consists of changing the diesel-powered locomotives and infrastructure for the commuter rail service between San Francisco and San Jose to electrified service to allow more frequent/faster trips, accommodate more passengers, and eliminate hundreds of thousands of pounds of carbon emissions annually. Part of the funding for the project comes from the California High-Speed Rail Authority, which will share the electrified track for its future high-speed rail service on the Peninsula. Caltrain certified a final EIR for the electrification project in January 2015. Opponents of high-speed rail in the South Bay sued, and Sabrina Teller and Elizabeth Pollock successfully defended the EIR in Contra Costa County Superior Court in August 2016. The project received its federal funding in 2017 and is expected to be constructed by 2020.