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> For Boston Metal's electrolysis to work, it has to convert the alternating current from the grid to direct current.

Given their energy usage, why don't these steel factories have their own power generation? Especially in less developed countries were the grid has less capacity and availability.

> "I am just here in Africa," Sonneborn said in a video call from Senegal at the end of May. "There are hundreds of millions of people that don't have a house. At some point, they're going to need steel. ...

Steel is needed to build houses? Maybe they need apartment buildings as populations move to cities.