When countries gather Sunday to hammer out how they will enact pledges to cut carbon emissions, a Norwegian-led oil consortium will offer a solution: pump some of your excess carbon dioxide to us and we could store it for you.

Environmentalists worry the costly technology, known as carbon capture and storage (CCS), will perpetuate the fossil fuel status quo when rapid and deep cuts in energy use are needed to limit global warming.

But proponents of CCS will be lobbying hard at the two-week climate conference in Katowice, Poland, for the extensive investment and regulatory change required to employ it at scale, citing U.N. assessments that it could play a role.