perfect design thanks <a href=" http://www.exerciseregister.org/what-is-clonidine-hcl-01-mg-tablet-used-for.pdf ">what does clonidine hydrochloride 0.1 mg do</a> The battery-substitute option should include the capital cost of generating the power it stores. According to DOE estimates*, the capital cost per kW-hr of a wind-power installation is 4.8 times that of a conventional gas-fired plant; for solar photovoltaics, the factor is 8.3; for solar thermal, 11.7. NOW add 1.7 for batteries, and you get a meaningful comparison: &#8220;green&#8221; power plus storage is 7 to 13 times more expensive to build than natural gas.