The deputy chief executive of RenewableUK - a trade association for the renewables industry - has said he is "disappointed" by Mr Hayes' comments.
Maf Smith told the BBC Radio 4 Today programme that his comments do not sit comfortably with what he said at a renewables conference last night.
– Maf Smith, chief executive, RenewableUK
At our conference he was talking about the importance of renewables in the mix, the importance of wind, the importance of jobs and securing benefits for renewables.
What we would like is clarity about those views. We understand some of those things that have been said in print this morning are not Government policy.