In 2016, Swedish entrepreneurs Carl-Erik Lagercrantz and Peter Carlsson founded an electric battery company called Northvolt with the dual goals of creating a company to address climate change and bringing battery manufacture to Europe. Northvolt, which succeeded in building a "gigafactory" near the arctic circle in Sweden, was soon on track to become one of the largest and most sustainable battery manufacturers in the world. But, building "the world's greenest battery" to fight climate change was a difficult-and perhaps unrealistic-goal. How much could Northvolt really contribute to the European effort against society's greatest challenge?