This decision will be valid for a "period of emergency" in the Ukranian energy sector. This was introduced by the recent decree of the Ukranian Cabinet of Ministers dated of 14 January "on the introduction of provisional emergency measures on the market of electric power" and the letter of the Ministry of Energy and Coal Industry of Ukraine.
The decision has already sparked criticism of the local and foreign investors in the Ukranian industry of wind power, and in particular the Ukrainian Wind Energy Association.
According to investors, such a decision is discriminatory and may result in the suspension of investments in the sector.
However, solar has been harder hit with a 20% cut.
In October last year, the Ukrainian government issued a state decree calling for the country's wind capacity to reach 2.28GW by 2020, an increase of 500% on current figure of 410MW.
The increase came according to a new state decree on the National Action Plan for the development of wind energy and other renewables in Ukraine for the period up to 2020, which was approved yesterday by the Ukrainian cabinet.