Somewhere above, there was a passing comment regarding the cost of building HV transmission lines to bring power from remotely located alternative generators (wind/solar), into the existing grid.
This is indeed a significant influence on economic viability of ANY kind of new generator.
As an example, I'm pretty sure that Queensland grid company spent around half a billion dollars on a 275Kv grid expansion out to Roma. The spend was over a period of about 3 years, and was solely done to provide power to the new CSG industry. That's a lot of money that doesn't help citizens, it only helps us wash and pump our gas out of the country.
Hopefully the gas industry will be buying power in large enough quantity to pay for it.
However, once the gas is all gone, who is going to pay for the continuing maintenance of hundreds of K's of transmission line and the 30 or so substations along the way?
My only hope is that some bright spark builds a big solar farm and uses all that infrastructure to bring energy back to the cities.