Aker said the goal was to establish funds totalling 100 billion euros ($113 billion) that would invest both in projects by Aker companies and in projects by third parties, without providing a timeframe for reaching this value.

"We will initiate a dialogue with some of the largest investors in the world and Aker Asset Management will be a global organisation with offices in Tokyo, Paris, New York and London," Aker CEO Oeyvind Eriksen told Reuters. "My expectation is that over time we will have partners and investors from basically all geographies."

Aker said Slyngstad, 59, will be tasked with building Aker Asset Management (AAM) as a new business area "on par with the company's industrial holdings."

Aker's industrial investments include stakes in oil firm Aker BP, green technologies firm Aker Horizons and industrial software firm Cognite.

"To a large extent, my job (at the oil fund) has been about building investment organisations and teams within those organisations and it is the same thing I'm going to contribute to here," Slyngstad told Reuters. "You make sure you find the right people to make the investment decisions."

Slyngstad said AAM would try to capitalise on investors' interest in green investments and the energy transition, while benefiting from Aker's industrial expertise, to create investment products.

Eriksen said AAM will consist of different investment vehicles "from early phase investments in industrial software and technology companies to private equity and large infrastructure investments focused on clean energy, green industries and green cities".

AAM will be majority owned by Aker, which will invest in the different funds with varying amounts, with key staff as co-owners, including a 5% stake for Slyngstad.

Aker Horizons has been already in a dialogue with anchor investors for setting up the first energy infrastructure fund.

"My expectations are that we would conclude these dialogues over the course of the next year," Eriksen said.

(Reporting by Terje Solsvik; Editing by Nerijus Adomaitis and Mark Porter)

By Nerijus Adomaitis and Terje Solsvik