Germany will achieve its 2010 target for renewable energy to cover 12.5% of gross electricity already this year, reports the federal environment ministry. Renewables' share of gross electricity consumption reached 11.8% in Germany last year compared with 10.4% in 2005. Wind energy supplied 30.5 TWh or nearly half the total renewables supply. But the growth of electricity supply derived from biomass, biogas, biowaste (landfill gas) and sewage gas is faster than that of wind energy. It climbed by 5.1 TWh to 18.6 TWh last year, while wind generation increased by 3.3 TWh. The ministry further reports that EUR 2.9 billion was invested in new wind plant in 2006, or 26% of the total invested in all new renewables plant, while electricity sales from wind energy amounted to EUR 2.74 billion, or 27% of the total sales of renewables power and heat of EUR 10.3 billion in Germany in 2006. "The driving force for this is the renewable energy law according to the rules of which most renewables generated electricity is fed into the public network and paid for," it says. The ministry says it is working with the Spanish and Slovenian environment ministries in an "International Feed-In Cooperation," to support fixed power purchase prices for renewable energy feeding into national electricity networks. The aim of the co-operation is to fine tune market structures based on government controlled purchase prices "to increase the share of renewable energies, to increase investor security and, with this, decrease the costs for renewable energies."