Delays over a government announcement on the future level of financial support for onshore wind power in the U.K. is holding up a significant portion of the GBP5 billion of investment in projects that have planning consent, but have not yet been given the final go-ahead by their backers, the director of policy for industry trade body RenewableUK said Friday
Delays over a government announcement on the future level of financial support for onshore wind power in the U.K. is holding up a significant portion of the GBP5 billion of investment in projects that have planning consent, but have not yet been given the final go-ahead by their backers, the director of policy for industry trade body RenewableUK said Friday.

This uncertainty is sending a bad signal to potential investors in renewable technologies at a critical juncture for the industry, said RenewableUK's Gordon Edge. "If at this point we need to have further changes, it blows the U.K.'s reputation as having a dependable environment," for clean energy investment, he said.

The debate in the U.K., and several other European countries, underlines how the continent's economic woes have weakened years of generous support for the clean energy industry. Like many other subsidies, financial backing for wind and solar power is in the firing line as governments scale back spending to meet new austerity budgets.

The U.K.'s Department of Energy and Climate Change, or DECC, had been expected to publish at the beginning of April the details of how much financial support wind power projects will receive in the future. That decision had already been pushed back from October and it is still not clear when it will be announced.

The financial support is delivered through a complex mechanism called the Renewables Obligation, which amounts to an indirect subsidy for various forms of clean energy.

Timing is critical because the U.K. has only eight years in which to ramp up the amount of green electricity it generates to meet binding 2020 European Union targets for reducing greenhouse gas emissions. The U.K. must also ensure enough new generation capacity is built to maintain power supplies as old nuclear and coal plants close.

Meeting those objectives will cost GBP110 billion, according to government estimates, and requires money from new investors beyond the traditional utilities and wind farm developers.

"This general inability of the government to decide this issue is making it impossible for anyone to actually sign deals...to deliver projects post-April 1, 2013," said Mr. Edge, referring to the date when the new regime will kick in. "You can have no certainty at what the support level will be."

The GBP5 billion of potential investment accounts for 4 gigawatts of wind power capacity, Mr. Edge said. Many of them are awaiting clarity on the level of financial support, although there are other issues such as grid connections and radar interference still to be resolved, he added.

"We're aiming to publish as soon as possible," said a spokesman for DECC. "We haven't finalized the proposals, it's a complex process. We're not far off but we can't confirm an exact date at the moment."

The Financial Times reported earlier Friday that no decision has been reached because of a disagreement within the government over the appropriate subsidy level. The U.K.'s Treasury wanted a deeper cut in financial support than the 10% initially proposed by DECC, the paper said.

A Treasury spokesman said the department was working with DECC on the issue.

Earlier in the week, ScottishPower's Chief Corporate Office, Keith Anderson, said he was worried about the delays to the announcement on the wind subsidy. ScottishPower is the U.K. unit of Iberdrola SA (IBE.MC), one of Europe's biggest wind developers.

"One of the key advantages of the U.K. as a place to invest is the predictable nature and stability of its regulatory regime. Sticking to the evidence and the timetable is key to investor confidence," Anderson said.