Latest / The Productivity Podcast with Fexingo: Output, Efficiency, and Long-Term Economic Growth / How Denmark Made Wind Energy the Cheapest Power Source
Transcript
- Lucas: So back in 1980, if you wanted a megawatt-hour of wind-generated electricity in Denmark, it would cost you roughly 110 euros in today's money. By 2025, that number had fallen to about 12 euros. Luna: That's a 90 percent drop. Is there any other energy source that's seen that kind of cost collapse? Lucas: Solar has come close, but the interesting thing about wind is that Denmark didn't just rely on falling technology costs. They actively engineered the market and the ownership structure to drive that productivity gain. Luna: Right, because I've read that something like 80 percent of Danish wind turbines are owned by local cooperatives or individual farmers, not big utilities. Lucas: Exactly. And that's the key institutional innovation. After the 1973 oil crisis, Denmark was importing 90 percent of its energy, mostly oil. The government decided they needed domestic alternatives. But instead of just subsidizing large corporate wind farms, they passed a law in 1979 that gave a 30 percent investment subsidy to anyone who installed a turbine, including homeowners and farmer cooperatives. Luna: So they basically crowd-sourced the early deployment. That's the opposite of what the US did with nuclear, where the government funded a few massive plants. Lucas: Exactly. And it created this virtuous cycle. Local owners had a direct financial interest in making sure the turbines ran efficiently. They'd call the manufacturer if something broke. They'd share performance data. And because the turbines were spread across many small sites, the grid didn't face the risk of a single large plant going offline. Luna: Plus, it built political support. When your neighbor has a turbine that's cutting his electricity bill, you don't NIMBY it. Lucas: Precisely. Denmark's wind capacity went from basically zero in 1975 to over 500 megawatts by 1990. But the cost was still high. The real productivity breakthrough came from a second institutional shift: standardization. Luna: What do you mean by standardization? Like, the turbine designs? Lucas: Right. In the 1980s, Danish turbine manufacturers — Vestas, Bonus, Nordtank — they all converged on a three-bladed, upwind, pitch-regulated design. There was a national certification scheme called the Danish Type Approval, which essentially forced manufacturers to meet common safety and performance standards. That meant you didn't have 50 different bespoke designs. You had maybe five or six that every installer knew how to maintain. Luna: So it's like the usb c of wind turbines. Standard plug, standard maintenance. Lucas: Exactly. And that standardization drove manufacturing scale. Vestas, which started as a hydraulic equipment maker, transitioned to wind in the late 1970s. By the 1990s, they were producing hundreds of turbines a year from a single factory in Randers. Each iteration got cheaper and more reliable. Luna: And that fed into offshore wind. Denmark built the world's first offshore wind farm, Vindeby, in 1991. Eleven turbines, 5 megawatts total. But it proved the concept. Lucas: Right. Offshore was crucial because Denmark's best wind resources are in the North Sea and the Baltic. But offshore was incredibly expensive initially. The cost per megawatt-hour for Vindeby was probably three or four times the onshore cost at the time. But the Danish government didn't back down. They used a feed-in tariff — a guaranteed price for offshore wind electricity — to give developers long-term certainty. Luna: And that's where Ørsted — originally Danish Oil and Natural Gas — comes in. They transitioned from oil and gas to offshore wind and are now the world's largest offshore wind developer. Lucas: Right. Ørsted's transformation is a case study in corporate productivity. They went from a state-owned oil company burning fossil fuels to a renewable energy giant that installed the world's first large-scale offshore wind farm, Horns Rev 1, in 2002. By 2025, Ørsted could build an offshore wind farm at a levelized cost of around 45 euros per megawatt-hour — competitive with gas. Luna: But that cost decline didn't happen in a vacuum. Denmark's grid operator, Energinet, invested heavily in transmission infrastructure to handle the variability. They built interconnectors to Norway and Sweden so that when the wind isn't blowing, they can import hydro power. Lucas: That's the third institutional piece: grid integration. Denmark doesn't have a lot of pumped hydro storage. So they solved the variability problem through market design. They have a day-ahead electricity market that prices in real-time. When wind is abundant, prices drop to near zero, which incentivizes flexible demand — like electric boilers in district heating systems — to switch on. When wind is scarce, prices rise, and imports from Norway kick in. Luna: You know, I think a lot of people assume Denmark's wind success is just about having a lot of wind. But it's really about the institutional scaffolding. Lucas: Absolutely. The wind resource is good, but not uniquely good. The UK has better wind, Ireland has better wind. But Denmark achieved the highest wind penetration in the world — over 50 percent of electricity consumption in 2025 — because they built the market and the ownership structure to make it work. Luna: And they set a target of 100 percent renewable electricity by 2030. Wind will be the backbone. Lucas: But here's the thing — the Danish model isn't directly replicable everywhere. It relied on a small, homogeneous country with strong social trust, a cooperative tradition, and a state-owned grid operator willing to invest decades ahead of demand. Luna: Right. If you try to apply the cooperative ownership model in a place with weak property rights or corrupt local governments, it probably won't work. Lucas: And yet, some elements are transferable. For example, the standardization of turbine components — that's already happened globally thanks to Vestas and Siemens Gamesa. And the grid integration lessons, like using interconnectors and flexible demand, are being adopted in Germany, Texas, and even China. Luna: So what's the one productivity lesson you'd take from Denmark's wind story? Lucas: I think it's that productivity gains don't just come from technology. They come from aligning incentives across the entire system — from the farmer who owns one turbine to the grid operator balancing supply and demand. Denmark made thousands of small agents each optimize their own piece, and that added up to a 90 percent cost reduction. Luna: It's a nice reminder that productivity is often a social innovation, not just a technical one. Lucas: Exactly. And on that note, if walking through the economy with us has made something click — like how a small country out-innovated the world in wind energy — you might appreciate that we keep this show ad-free. We deliberately don't run ads. If you want to support that choice, the link is buy me a coffee dot com slash fexingo. It's a small way to keep the conversation going without commercial interruption. Luna: Yeah, it really does help. And we appreciate every bit of support. Lucas: Alright, so back to that question of replicability. There's one place that's trying to adapt the Danish model — and it's probably not where you'd expect. Luna: Let me guess: India? Lucas: Very close. It's the state of Tamil Nadu. They have a wind capacity of over 10 gigawatts — bigger than Denmark's entire fleet. But their capacity factor is lower because the grid infrastructure isn't as robust, and they don't have the same interconnector capacity. So they're getting maybe 15 percent capacity factor onshore, compared to Denmark's 25 percent. But they're now experimenting with small-scale, community-owned wind projects in rural areas, partly inspired by Denmark's cooperative model. Luna: And that's interesting because it shows the model can be adapted, even if it's not a direct copy-paste. Lucas: Exactly. The core insight — that distributed ownership creates better maintenance incentives and local political buy-in — is universal. The specific implementation has to fit the local context. Luna: Before we wrap, I want to ask about the future. With offshore wind costs still falling, and floating wind emerging, where do you see Danish wind productivity going? Lucas: The next frontier is likely the North Sea energy hub concept. Denmark is working with Germany, the Netherlands, and Belgium to build an artificial island in the North Sea that would serve as a hub for thousands of offshore wind turbines. The idea is to centralize power conversion and transmission, which could drive down costs even further by avoiding redundant infrastructure. If that works, we might see offshore wind costs drop below 30 euros per megawatt-hour by 2035. Luna: That would make wind cheaper than almost any fossil fuel alternative, even without carbon pricing. Lucas: Exactly. And that's the productivity story that keeps going. Denmark didn't invent wind energy — they just figured out how to make it work at scale, and they're still finding ways to improve. Luna: Alright, Lucas. Great episode. I think I'll look out for Danish wind next time I see it on my electricity bill. Lucas: And if you see a particularly low number, you'll know why. Until next time.