> But if they are assuming a typical or dirty grid, then that’s one area where the footprint can come down a significant amount. Not sure I understand how, sin

> But if they are assuming a typical or dirty grid, then that’s one area where the footprint can come down a significant amount. Not sure I understand how, since regular concrete made from portland cement does require heating to cure - in fact it's exothermic. The vast majority of the emissions from traditional concrete come from the manufacturing of portland cement. It's not clear how a renewable grid would significantly lower the emissions of producing cornstarch, since the majority of emissions happen at the agricultural stage, via the petroleum based fertilizers.