Large electrical generation plants are historically known for non-minimal emission of combustion byproducts. The Low-Swirl Injector (LSI) technology has been shown to significantly reduce nitrogen oxide and carbon oxide emissions during combustion of hydrogen, natural gas, and other feedstocks. Further research is ongoing.
Any efficiency enhancements to traditional power generation methods should be embraced even as we continue to explore alternative generation strategies via renewable resources. The great thing about technologies like this is that they are equally applicable to very conservative and very progressive power technologies.