The few companies that are working on lower-emission cement replacements face significant bottlenecks in terms of cost and scale. That could make them prime candidates for pull funding. “Cement could be perfect for an AMC, because the government already buys forty percent of US cement, and suppliers don’t know who will pay high prices in the short run,” Ransohoff said. “We need a policy to move it down the cost curve.”81 If the US pledged to buy several billions of dollars’ worth of affordable green cement, it could encourage investors and entrepreneurs to pour more time and treasure into its
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