Based in Northern Virginia and an X-Prize finalist, C2CNT converts CO2 into carbon nanotubes, a product that can be used for numerous purposes, such as construction, energy storage, and strengthening industrial materials. Its customers are in the steel, cement and construction industries. The company’s CEO, a chemistry professor at George Washington University, estimates that each ton of CO2 is worth a quarter of a million dollars. It is not seeking venture capital but is instead looking for strategic partnerships. Capital Power, a power producer based in Edmonton, acquired an equity interest in C2CNT in May.