In 2021, $3.2 billion was invested in quantum firms around the world, up from $900 million in 2020. Nerds and geeks at Google, IBM, Amazon, Honeywell and at least 600 startups are working overtime on cryostats, trapped ions, silicon quantum dots, and diamond vacancies. What technology wins and when remains unclear. The goal is to achieve ‘quantum advantage’ -- to build computers capable of solving problems far beyond the reach of existing machines. Much is possible: new materials designed for battery storage resulting in dramatic reductions in charging times for electric vehicles (make charging an EV as fast as pumping gas); real time or near real time optimization of complex energy grids with massively distributed supply and demand nodes; optimizing the global transportation infrastructure for liquified natural gas; and transportation management of multi-modal mobility systems in complex urban environments. And, maybe, say some experts, these tasks could that be accomplished with far less energy. In Germany, the existing large and small data centers consume almost 3% of total electric consumption — roughly the same as the entire city of Berlin. But who will have access to quantum computing capacity and for what purpose? What is feasible and in what timeframes? I will present the results of a study funded by the Internet Society Foundation that takes a deep dive into the future of quantum computing and its implications for our environment.