[RWebb]

BTW - there is one co. that discloses the chemicals they use -- only one, IIRC

also, you forgot the heavy wt. of the NG setup

I think the best use of NG is in stationary power plants as a transitional and rel. clean fuel to replace as many coal fired plants as we can; and for backup power for wind turbines, centralized PV or liquid Na steam plants, etc.