No-one was available for comment when BBC Wales telephoned Western Carbons' offices in Ammanford, Carmarthenshire, and asked for a response to Mr Williams's concerns.
Called C4 plants because they utilize a molecule with four carbons, plants that use this evolutionary trick include sugar cane, corn and other tropical plants.
Using natural gas to create electricity will reduce our need for coal and will drastically reduce emissions of carbons that are contributing to global warming.
The idea has been that if we put a price on these carbons, then maybe that would be a way that companies would all respond and start inventing new things that would make our planet cleaner.