Market-based policies encourage emissions reductions where and when they are most cost-effective, and they provide opportunities for all industries to contribute to a low- GHG economy. This leverages the ingenuity of U.S. businesses, which have repeatedly proven their ability to meet stringent environment and safety standards, often with innovations that would not have been predicted by regulators. â¢ Act as quickly as possible. Increasing policy ambition sooner rather than later will benefit the U.S. economy. The MCS envisions an energy system transition over many decades; sending early signals to investors will avoid abrupt shifts in employment, capital, and other materials. Every year, the United States builds and deploys new power plants, vehicles, and buildings that will produce and consume energy for decades into the future.