Don't want to jump to any conclusions, but the below link seems to suggest that this contract is just for 2019, and so that the hundreds of millions is per (this) year. That would be excellent if true (and the stock will very likely spike on Monday), but I'm going to be cautious for now. Also seems to suggest contracts are set up on a yearly basis or maybe longer if the parties agree??
Patrick McGee on Twitter
Does that mean, that only two such pools exist - as of the date that document was written?