Yes, in order, they are probably using solar (when possible), biomass, geothermal, and hydroelectric. So, to be truthfully accurate, the trains are using 100% wind when available, and are supplemented when necessary with other renewable sources.
I actually support renewable energy (I took university classes in that area), but I am OCD about being completely honest about where the energy comes from when the renewable source is unavailable. In the USA, the gov't and the power companies like to report "we just added 500 Megawatts of solar or wind powered electricity on this area." What they DO NOT report is they also added the equivalent amount in traditional sources to maintain the supply when the sun isn't shining or the wind isn't blowing. That is not honesty.