Sunlight into Natural Gas

While I was going through articles online and reading them, I read that fracking is a huge issue right now because of the waste of water and the extra treating of the water that needs to be done to the water that used to fulfill this process. Well, a company named HyperSolar has come up with a method that will use sunlight to extract hydrogen from water and after that, it is the injected with CO2 which it reacts with to make methane. This idea uses the waste water while also treating that water to make it clean water. I think that this would be a huge benefit for all of us because it is a better alternative to other ways of producing natural gases and could also help our water quality at the same time. I think that if they can execute the idea correctly and make this work, that it will be a good idea.