Aarhus and Aalborg, two Danish cities once better known for their maritime and industrial heritage, have rapidly become the epicenter of Europe’s energy trading revolution. Dubbed the “Silicon Valley of energy trading” by industry insiders, these hubs are home to a new breed of traders leveraging cutting-edge algorithms to navigate the increasingly complex and volatile renewable energy market, Financial Times reports.
At the forefront of this transformation is InCommodities, an Aarhus-based trading firm partly owned by Goldman Sachs. On its buzzing trading floor, youthful traders monitor giant screens for the perfect moment to buy or sell electricity, while data scientists refine the algorithms that now execute a growing share of the trades. These automated systems are essential for managing the volatility inherent in wind and solar power, which fluctuate based on factors as minute as the cloud cover over Madrid or wind speeds in the North Sea.
Daniel Andersen, InCommodities’ chief executive for Europe, told Financial Times that the expansion of renewable energy will only heighten the need for algorithm-driven trading. “You need to be able to cope with this increase in data,” he explained. “Algorithms are a way to navigate all that data, extract the relevant information, and understand how it’s going to impact prices.”
Renewables now account for over 25% of Europe’s energy mix, up from less than 10% two decades ago. This rapid growth has created an environment where electricity spot prices can swing dramatically—from negative rates on days of oversupply to more than €600 per megawatt-hour during “Dunkelflaute” conditions, when there is little wind or sunshine. The ability to forecast, balance, and optimize these fluctuations in real-time has become a lucrative challenge for traders.
The rise of algorithmic trading in the energy sector has also drawn scrutiny from regulators. A report from the Netherlands Authority for Consumers and Markets (ACM) acknowledged that while automation improves market liquidity and efficiency, it can also introduce risks such as increased volatility, lower transparency, and unintended market manipulation. Ian McGowan, head of compliance at InCommodities, noted that as more algorithms interact, the potential for unintended disruptions grows. “With greater quantities [of algorithms], the risk of inadvertent market conduct increases,” he admitted.
The high profitability of energy trading has fueled a wave of new entrants in Aarhus and Aalborg. Firms such as Aros Commodities, Pure Power Trading, and Aarhus Energy—most founded in 2023 by ambitious young entrepreneurs—are competing with established players like Danske Commodities, a subsidiary of Norwegian energy giant Equinor.
The energy crisis triggered by Russia’s 2022 invasion of Ukraine demonstrated just how lucrative this market can be. That year, InCommodities reported post-tax profits of €1.06 billion, a tenfold increase from €112 million the previous year. Danske Commodities fared even better, generating €1.47 billion in profits, up from €303 million in 2021. While profits have since normalized, the windfall encouraged fresh competition, and firms are now investing heavily in proprietary trading software to gain an edge.
Automated trading now accounts for 70% of volumes on European power exchanges, up from just 44% in 2020, according to Epex. The trend is expected to accelerate as manual trading becomes less viable. Some algorithms can even learn from their own performance, a development that could enhance liquidity and pricing efficiency in the market.
However, regulators remain cautious. Acer, the EU body overseeing energy markets, has warned that the millisecond execution speeds of algorithmic trading pose challenges for surveillance teams. The ACM report also highlighted risks such as “robot battles,” where competing algorithms can inadvertently send misleading price signals.
Despite these concerns, industry leaders believe that algorithmic trading is an indispensable part of the future energy market. InCommodities’ McGowan acknowledged the challenges but stressed the firm’s commitment to ethical trading. “We want to pioneer best practices,” he said. “We recognize our responsibilities in the markets.”
As Denmark cements its role as Europe’s energy trading powerhouse, the fusion of technology and renewables is set to reshape the sector. With sophisticated algorithms driving the transition, the next wave of innovation in energy markets may well emerge from the trading floors of Aarhus and Aalborg.
