From the article:
Today, manufacturers and operators of combustion systems have the opportunity to choose from a variety of technologies to abate NOx emissions. As time has shown, the limited capabilities and high costs of traditional approaches will not adequately serve the market moving forward. By reducing pollutants directly at the source, advanced technology architectures are uniquely able to slash NOx emissions at a low cost of system ownership. For the first time, the industry has an economically beneficial means to meet the environmental requirements of today, and of tomorrow.