Under a new contract between Vivens, the company that procures power for Dutch railroads, and Eneco, the power company, all electricity for powering trains in the Netherlands will be supplied from wind farms. Starting with 50% in 2015, the amount of power from wind for the trains will increase to 100% in 2018. The contract will continue to 2025.
Dutch trains currently use about 1400 gigawatt-hours of power per year. Some of this is already supplied in part by wind farms. The contract forbids sourcing the electricity from existing wind power, however, so the expansion will depend on future wind farm construction. The new wind farms need not all be in the Netherlands, and the expectation is that a large part of the new power will come from Belgium and Denmark.