I am a Libertarian Conservationist (which I assume is similar to Green Libertarianism), but I vehemently disagree with the OP that we support the Carbon Tax and/or Carbon Emissions Market Trading Scheme. These great big interventionist policies, instituted by State, exploited Big Banksters and Corrupt Fat Cat Financial Kleptocrats, is totally incompatible with the very core basic fundamental principle of Libertarian small government. It is an artificial market to sell an artificial product, legislated into existence by parliament, which attempts to transact the non-delivery of a non-product to a buyer compulsory required to acquire under government threat of force. It is so contrary to Libertarian principle that the OP must be experiencing severe cognitive dissonance to assert such a scheme could be supported at all by any Libertarian, or else the don't know anything about Libertarians at all.