Hungary has about 3.9m Removal Units (RMUs), issued under the Kyoto Protocol, that it may sell, the National Development Ministry told MTI.

State secretary for energy and climate affairs Janos Bencsik said earlier that Hungary would be among the first countries to bring RMUs to market.

Revenue from the sale of the units may only be used to support environmentally-friendly investments.

Each RMU allows the emission of one metric ton of CO2. The units are issued on the basis of land use, land-use change and forestry activities such as reforestation.