Much of the worlds carbon pollution comes from coal/gas-fired power plants.
6 billion tonnes of fossil carbon dioxide is emitted into the atmosphere annually in the USA alone.
Existing carbon-based industries seek to reduce their greenhouse gas emissions, and maintain profitable, beneficial businesses.
Currently international coal and gas fired power stations have an inherent environmental impediment, that being the 19 billion tonnes of carbon dioxide in emitted into the atmosphere annually.
The cost of removing this carbon dioxide component vented from the flu gases is a major technical-cost-deficit problem.