Latest / The Productivity Podcast with Fexingo: Output, Efficiency, and Long-Term Economic Growth / How Sweden Built the World's Most Productive Industry Decarbonization
Transcript
- Lucas: Sweden has been industrializing for over a century — steel, pulp and paper, chemicals, mining — the kind of heavy industry that most people assume can't coexist with aggressive climate policy. Luna: Right, because the conventional wisdom is that decarbonization is a productivity drag — that you have to choose between the environment and economic output. Lucas: Exactly. But since 2015, Sweden's industrial carbon emissions have fallen by about 35 percent. Meanwhile, its manufacturing output has grown by roughly 12 percent. That's not a compromise — that's a decoupling that most economists thought was decades away, if possible at all. Luna: Thirty-five percent in a decade. That's not marginal efficiency gains. That's structural. So how did they do it? Lucas: The short answer is a carbon tax that started early and rose predictably. Sweden introduced its carbon tax in 1991 at about 30 euros per ton of carbon dioxide. Today it's around 120 euros per ton. That's the highest in the world. But here's the crucial detail — the tax was phased in gradually over 30 years, with a clear trajectory. Industry knew exactly what the price of carbon would be in 2020, 2025, 2030. So instead of lobbying for exemptions, companies started planning long-term capital investments around that price signal. Luna: So the predictability mattered more than the absolute level. A sudden high tax would have been disruptive, but a long, rising floor gave them time to innovate. Lucas: Exactly. And the innovation that emerged is genuinely impressive. Take steel. The Swedish steel industry accounts for about 10 percent of the country's industrial emissions. In 2016, a consortium called HYBRIT — that's SSAB, the steelmaker; LKAB, the iron ore miner; and Vattenfall, the state-owned utility — launched a project to make steel using hydrogen instead of coal. The hydrogen is produced via electrolysis using hydropower — which Sweden has plenty of. In 2021, they delivered the world's first fossil-free steel to a customer. Volvo used it to build a truck. By 2026, HYBRIT expects to be producing commercial volumes. Luna: That's the kind of moonshot that usually stays in the lab. But they actually commercialized it in under a decade. What about the rest of the industrial sector — pulp and paper, chemicals? That's harder to electrify. Lucas: There's a second piece there — district heating and industrial symbiosis. In Sweden, about 90 percent of urban buildings are connected to district heating networks. Those networks are largely fueled by waste heat from industrial processes. A pulp mill, for example, generates enormous amounts of residual heat that would normally be vented. Instead, that heat is piped into the district system. It replaces natural gas or oil that would have been burned for heating. So the same industrial activity now serves a dual purpose — producing paper and heating homes, with zero extra emissions. Luna: That's almost like a circular economy at scale. The waste heat becomes a revenue stream. So the carbon tax didn't just punish emissions — it created an incentive to find value in what was previously thrown away. Lucas: Precisely. And the data bears this out. Sweden's industrial energy intensity — energy used per unit of output — has fallen by about 30 percent since 2000. That's not because they deindustrialized. Manufacturing value added as a share of GDP has held roughly steady at around 16 percent. They simply use less energy to make the same stuff. A lot of that comes from the fact that the carbon tax made energy efficiency investments a no-brainer. If you're paying 120 euros per ton, installing a heat recovery system pays for itself in two or three years. Luna: I've read that some Swedish companies initially opposed the tax. Did they manage to carve out exemptions? Lucas: There was pushback in the early 1990s. But the government made a smart trade-off. Instead of blanket exemptions, they offered a reduced rate for industries that participate in the European Union's Emissions Trading System — the carbon price there is lower. And they also lowered payroll taxes for industrial companies. The net effect was that the overall tax burden on industry didn't skyrocket, but the price signal on carbon remained strong. Companies had a clear incentive to switch fuels and improve efficiency, but they weren't crippled by the total tax bill. Luna: So the carbon tax was paired with revenue recycling — lowering other distortionary taxes. That's textbook economic theory, but rarely executed so cleanly. Lucas: Right. And the result is that Swedish industry is now more competitive, not less. The steel made by SSAB is among the highest quality in the world. The pulp and paper sector is globally leading. The carbon tax forced them to think hard about every joule of energy — and that discipline made them leaner and more innovative. It's the same logic as the Porter Hypothesis — the idea that well-designed environmental regulation can actually enhance competitiveness by spurring innovation. Luna: If walking through the economy with us has made something click — maybe you've started noticing these productivity patterns in your own work or investments — and you'd like to support the show staying ad-free and independent, listeners have found it useful to toss a coffee our way at buy me a coffee dot com slash fexingo. No pressure, but it genuinely helps. Lucas: Yeah, we keep the show free because we want these ideas to circulate widely. And listener support is what makes that possible. So if you're in a position to chip in, it's appreciated. Now, back to Sweden — because the most interesting part is what this means for other countries. Luna: Right. Can other countries copy the Swedish model? Or does it depend on specific conditions — like abundant hydropower and a long history of consensus-driven policy? Lucas: It's a fair question. Sweden has natural advantages: lots of hydro and nuclear power, a small population, a homogeneous political culture. But the core policy design is transferable. A carbon tax that starts low and rises predictably, paired with revenue recycling to offset regressive effects, can work anywhere. British Columbia, for example, introduced a similar carbon tax in 2008 — starting low, rising steadily, and returning revenue via income tax cuts. Their emissions fell while the economy grew. You don't need Swedish hydropower to make that work. You just need political credibility to maintain the trajectory. Luna: But what about heavy industries in countries that can't easily electrify? Cement, chemicals — they need process heat that's hard to get from electricity alone. Lucas: That's the real frontier. In Sweden, they're working on that too. Cementa, the Swedish cement company, is developing carbon capture at its plant on the island of Gotland. They plan to capture emissions from the kiln — not just the fuel but the chemical reaction itself — and store them under the North Sea. That's expensive, but again, the carbon tax makes it viable. If you're paying over a hundred euros per ton, capturing and storing it at fifty euros per ton makes economic sense. Without a high carbon price, there's no business case. Luna: So the carbon tax acts as a demand signal for carbon removal technology. It creates a market for these technologies before they're cheap. Lucas: Exactly. And that's the productivity angle that often gets missed. Decarbonization isn't just about reducing emissions — it's about re-engineering industrial processes to be more efficient. Waste heat recovery, hydrogen-based steelmaking, carbon capture — these are productivity improvements. They reduce input costs over the long run. Sweden's experience suggests that if you price carbon high enough and predictably enough, the private sector will find ways to produce more with less, which is the definition of productivity growth. Luna: One number that always sticks with me: Sweden's GDP per capita has grown faster than the EU average over the last 20 years. So they managed to decarbonize faster than almost anyone while also getting richer relative to their peers. That's the decoupling that most people think is a fantasy. Lucas: It's not a fantasy. It's a policy design problem. Sweden didn't do anything magical — they just set a price, stuck with it for three decades, and let industry figure out the rest. The lesson for other countries is that you don't need a perfect plan upfront. You need a credible trajectory. Because industry can plan around a rising carbon price. What they can't plan around is a policy that changes every election cycle — a carbon tax introduced and then repealed, or a subsidy that gets pulled. The Swedish model's secret ingredient is stability. Luna: Stability and time. Thirty years is a long political horizon. Does that mean the model is politically infeasible in more polarized democracies? Lucas: It's harder, but not impossible. What helped Sweden was that the carbon tax was introduced during a period of broad political consensus on the environment. The tax was initially supported by the center-right government, not just the left. And it was designed to be revenue-neutral overall, so the net tax burden on the economy didn't rise. That made it easier to sustain across administrations. Other countries could adopt a similar approach — start low, commit to a schedule, and recycle the revenue. It's not a political silver bullet, but it's a proven formula. Luna: So the key takeaway is that productivity and decarbonization aren't trade-offs. If policy is designed right, they reinforce each other. Lucas: That's the headline. Sweden shows that heavy industry can become cleaner and more competitive simultaneously. The carbon tax was the nudge, but the real work was done by engineers and managers who found ways to use energy more wisely. That's productivity in its truest sense — getting more output from the same inputs. In Sweden's case, the input they're using less of is carbon. Luna: I think the question that lingers is whether this works for developing economies — ones that don't have Sweden's institutional capacity or cheap renewable energy. But that's a topic for another episode. Lucas: Absolutely. For today, the lesson is clear: if you want a productivity revolution, price the thing you want to reduce — and give industry the confidence to invest in the alternatives. Sweden's been doing that since 1991, and the numbers speak for themselves.