Norwegian oil and gas firm Statoil ASA (STL.OS STO) has seen an increased interest for renewables following the Fukushima nuclear disaster, but for green energy to compete with other investment opportunities and play a bigger role in the company's future, costs must come down.

It's still early days for the firm's renewable energy department, that became part of the newly set up business section Marketing, Processing and Renewable Energy in an organizational restructure on Jan. 1 moving from the former business unit Technology and Research.

On the same date, Stale Tungesvik, who has 26 years of experience in the oil and gas industry, became head of the renewables section that names offshore wind power a key area in its approach for new energy.

Statoil is exiting its onshore wind assets, a number of various sized farms, and concentrating on wind projects at sea, where it can exploit its experience from its numerous offshore oil and gas exploration fields.

Tungesvik said that the firm had seen a rising interest for renewables after the nuclear disaster and that the firm's future renewables strategy is also dependent on the political approach to the future energy mix--a hot topic after the earthquake and tsunami damaged the Fukushima Daiichi nuclear plant in Japan.

"After the events and up until now there has been a lot, a lot more pressure," Tungesvik said.

Among its renewable ventures are the world's first floating wind turbine Statoil constructed 10 kilometers off the south-west coast of
Norway , and two U.K. projects in the pipeline--Sheringham Shoal and Dogger Bank .

Tungesvik described the 317 megawatt Sheringham Shoal project, off the
Norfolk coast, as an "enabler." The wind park will consist of 88 turbines and the firm is investing about GBP1 billion in the project together with Norwegian power utility Statkraft. The firm's each have a 50% stake in the project.

"We have to show we can do this, or at least take a lot of lessons from it," he said in an interview with Dow Jones Newswires.

The firm has a considerably bigger 9 gigawatt project in the pipeline, the
Dogger Bank project, done in a consortium with Statkraft, Scottish and Southern Energy (SSE.LN) and the U.K. subsidiary of RWE Innogy (RWE.XE).

"Buying into fields together with others could be interesting, but it's important for us to take an active role as we want to learn this," Tungesvik said.

The
U.K. also happens to be where most efforts are currently being directed given its proximity to home for Statoil, and the country's relatively welcoming approach toward renewables.

"But looking ahead it doesn't matter where you do this, if it's profitable you could do it anywhere," Tungesvik said.

The renewables section is not profitable yet--as the business unit is still in an investment phase--but taking costs down and turning it into a money-spinner once its projects are in place is at the top of Tungesvik's agenda.

He said the firm's strong balance sheet and financial strength is an advantage as the wind farm projects require substantial investments.

Statoil is the partly state-owned Norwegian energy giant best known for its highly lucrative oil and gas exploration business, which in 2010 helped the company turn a net profit of NOK38.08 billion ($6.98 billion).

At 1525 GMT shares traded 2.0% higher at NOK139.10.