Norway's Socialist Left Party said on Wednesday it had pulled out of talks to form a majority coalition government following this month's election, a move likely to lead to the formation of a minority centre-left administration.
Labour, the Centre Party and the Socialists won a majority of seats in Norway's parliamentary election on Sept. 13, but failed to bridge disagreements over the environment and wealth distribution during exploratory talks this week.
"We do not believe we can find a political platform ... to have an aggressive enough climate policy," Socialist Left leader Audun Lysbakken told reporters, explaining his party's decision.
Labour leader Jonas Gahr Stoere, who is expected to become Norway's next prime minister, had argued that a majority government would provide the greatest degree of predictability for the country.
Minority governments are common in Norway, however, and incumbent Prime Minister Erna Solberg of the Conservatives has ruled in a minority for most of her eight years in power.
Solberg has said she will step down as soon as Stoere is ready to take power, with mid-October seen as the most likely timing for a transfer of power.
Labour now faces the option of ruling alone or jointly with the Centre Party. In either case, the new government will be forced to negotiate in parliament on any proposals it presents, including on fiscal spending.
Norway's status as an oil and gas producer, contributing to climate change, was at the heart of the election campaign, although a transition away from petroleum is likely to be gradual despite progress by pro-environment parties.
Its oil and gas industry pumps around 4 million barrels of oil equivalent per day, accounting for more than 40% of Norway's export revenues, although output is projected to fall from 2030 onwards.
The Socialist Left Party wants to halt all exploration for new resources, which would hasten the oil industry's decline, but Labour and the Centre have rejected this position.
Labour is wary of potential job losses from petroleum's demise, and champions state-sponsored policies to encourage a transfer of engineering know-how from oil production to renewable energy.
(Reporting by Terje Solsvik, editing by Gwladys Fouche and Gareth Jones)