RE:RE:Technology Sugaree, Reading your link again, they are testing new technology on a relatively small 50 MW power plant. The cost is not revealed but good luck, and it's good for natural gas.
The AAV or Entropy technology is used post-combustion so it can be applied to existing large scale power plants in jurisdictions where the investment can be offset by lower carbon taxes or even credits, whatever the scheme.
Imagine, blue natural gas is a feedstock to a power plant producing blue electricity. There is nothing Greener than that, lol.