Speaking at a renewable seminar in London organised by clean IT technology provider Carbon International, Mr Hyams said: "The government is using what I'd call pay and spray, with lots of little bits here and there."
"What the UK has got to do is decide which technology it wants to be good at and then focus on that," he added.
However, the private equity partner in Englefield Capital said that many investors had been too harsh when forming opinions on the funding policies outlined in chancellor Alistair Darling's Budget.
Whitehall plans to invest £525 million in offshore wind turbines through a reform of the existing Renewables Obligation.
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