In 1994, an "environmental bonus" was provided to power producers for every kWh delivered by a wind power plant.
The bonus corresponded to the electricity tax paid by households, and was administered in the form of a tax deduction for each kWh of wind power produced. The amount deducted, that is, the bonus, was returned to the wind power producers through a regulated contract between the wind energy producers and the suppliers. IEA/IRENA Global Renewable Energy Policies and Measures Database © OECD/IEA and IRENA, [November 2020]
