We found that these measures greatly boost industry returns, particularly at current oil prices of about $50 per barrel. Without the tax breaks, most new fields would be a no-go to investors, averaging about a 7 percent return on investment (in nominal terms). With them, that turns into a healthy 16 percent profit – enough to start drilling. (See Figure)

A common benchmark of return in the oil industry is about 10% nominal. (If inflation is about 3%, then this lines up with the 7% real suggested in a recent exchange with Eirik Wærness, Chief Economist of Statoil.) This suggests that most of Norway’s oil investment would not take place but for these two measures. In fact, we found that a full 95 percent of Norway’s existing petroleum licenses — most of which are in the North Sea and the Norwegian Sea — would sit idle but for the help provided by fast depreciation and uplift.

These measures are tilting the economics of the petroleum industry in Norway, bringing 8 billion barrels of oil online, which would emit 2.3 Gt of carbon dioxide when burned. That would comprise about 1% of world’s remaining carbon budget for staying within a 1.5-degree carbon budget.

Removing tax breaks

Our results offer a possible path forward for leaders who value both fiscal discipline and climate limits. Removing fast depreciation and uplift would mean that most new capital investment — even in existing fields — would not proceed at current oil prices. That could be beneficial from the perspective of beginning a phase-down of Norway’s dependence on the petroleum industry. But it would still leave the door open to some oil production that makes fiscal sense if prices rise again, e.g. for the nearly half of the oil resources that would be economic at $70 per barrel even without fast depreciation and uplift.

The Ministry of Finance has taken great pains over many years to make the tax system stable, avoiding big shifts such as eliminating fast depreciation or uplift. Undoing these measures may not sit well with those who took great care to design the system that way. (There is also an argument that some, albeit a smaller, amount of uplift may be warranted.)

Still, stability in the global climate may demand something more than stability from the fossil fuel industry. Norway’s new leaders could instead pursue climate limits by providing the industry a different kind of certainty — by setting forth a new, strong, predictable tax and licensing system that fast-tracks Norway on its leadership role to a truly low emissions society. Phasing out fast depreciation and uplift would be a good start.