A surge in wind and solar power means many businesses and consumers around Europe can get paid for plugging in. The U.S. could be next.
5 min
KERKDRIEL, the Netherlands—For much of the spring and summer, Jeroen van Diesen got paid for using electricity.
Sometimes his neighbours came over to power up too, generating even more cash.
Van Diesen’s situation reflects the strange, new dynamics of electricity that could soon become the norm in many parts of the world: A big increase in wind and solar power has pushed wholesale prices to zero or below for many hours of the year, spurring a sea change in the way people use power—based on whether the sun is shining or the wind is blowing.
Most people pay a fixed price for each kilowatt-hour of electricity they consume throughout the day. The price is set by their power company and only changes at infrequent intervals—once a week, a month or even only once a year.
Van Diesen, a software salesman, recently signed up to receive electricity from two providers that charge him the hourly price on the Dutch wholesale power market, rather than a fixed price that resets monthly or annually. When the price of electricity falls low enough, smart meters in his house begin charging his two electric cars.
Wholesale prices swing wildly each hour of the day, and even more so as a larger share of electricity flows from wind and solar installations. Because the generation costs of wind or solar farms are negligible, market prices will be near zero when there is enough renewable power to cover most of a region’s electricity demand.
Electricity market dynamics get weirder when renewable-energy producers don’t have an incentive to stop feeding power into the grid, usually because of government subsidies. Then grids can be flooded with excess power, pushing prices into negative territory.
Van Diesen said he’s made 30 euros, equivalent to around $34, over the past five months charging his car, enough to cover the service fee from his power supplier, a Norwegian company called Tibber.
“I’m charging the car for free,” said van Diesen, who is part of a group of clean-energy enthusiasts in the Netherlands who call themselves green nerds. “To me it’s also like a hobby and a game—how far can I go?”
Doing laundry in the evening? The electricity could be free a few hours later when demand dies down and the wind picks up. Likewise, in regions with lots of solar power, charging an electric vehicle in the morning is usually far more expensive than powering up under the midday sun—or whenever the price is right.
In the U.S., most states don’t currently allow such real-time pricing, but many think that will change. Already, in some of the world’s biggest economies from Western Europe to California, the occurrence of zero and negative wholesale power prices is growing fast.
Wholesale prices across continental Europe have fallen to zero or below in 6% of all hours this year, up sharply from 2.2% in 2023 and just 0.3% in 2022, according to data collected by Entso-E, the group of European transmission system operators. In markets with lots of renewable capacity, this year’s figure was higher: 8% in the Netherlands, 11% in Finland and 12% in Spain. Analysts expect those numbers will grow as more solar panels and wind turbines are installed.
The changes sweeping Europe’s electricity markets, which were accelerated by the energy crisis brought on by the war in Ukraine, show what could happen in the U.S. in a few years when renewable capacity reaches a similar scale. In 2023, 44% of EU electricity was generated by renewables, compared with 21% in the U.S.
In some U.S. markets—sunny California, the wind-swept Great Plains, and Texas—zero and negative prices are already common. The wholesale price in Southern California was negative nearly 20% of all hours this year because of the region’s boom in solar-panel installations. That compares to around 5% last year, according to data collected by the U.S. Energy Information Administration.
U.S. regulators have been cautious about allowing households and companies to sign up for electricity plans that charge them wholesale prices, fearing consumers could be hit with big bills if prices jump. Texas consumers who signed such contracts were walloped with huge bills in 2021 when a rare winter storm sent prices soaring.
States’ reluctance, however, may now be waning as policymakers increasingly see real-time pricing as a way to lower peak demand, reduce the need for costly infrastructure and integrate more renewables into the grid.
California regulators this year ordered the state’s utilities to expand dynamic price pilot programs that have only been available for a select group of customers.
Your overall power bill still won’t be zero in a clean-energy future. Generation costs comprised around 60% of customer bills on average in the U.S. in 2023. Transmission and distribution costs account for most of the rest—and are expected to grow sharply in the coming decade to reinforce the grid for electric heating, electric transport and data centers.
Negative prices could also be reined in over the next few years as governments from Europe to California pare back renewable-energy subsidies. Governments are particularly focused on trimming subsidies for solar power, which is driving negative prices in a number of markets.
In Europe, energy-hungry manufacturers are shifting their operating strategies to maximise energy consumption when prices are close to zero or negative, while throttling back when prices are high.
Linde, a U.K.-based engineering company, is building a new generation of industrial gas plants that can be quickly ramped up and down depending on the wholesale price of power.
When solar and wind power drive prices down, Linde’s plants fire up and send the output to large tanks. When electricity prices shoot up again, the plants can ramp back down and supply customers out of the gases stored in the tanks.
“The tank functions like a virtual battery,” said Klaus Ohlig, a research and development executive at Linde Engineering.
Trimet, an aluminium producer that is one of Germany’s single-largest power consumers, is overhauling its smelters to vary their power consumption depending on the availability of renewable energy on the grid.
A new European Union law requires dynamic-price power contracts be made available to consumers across the 27-nation bloc. Tibber, a power retailer based in Norway that charges its customers the wholesale hourly price, has signed up more than one million households across the Nordic countries, Germany and the Netherlands.
Edgeir Aksnes, Tibber’s co-founder and chief executive, says he doesn’t expect customers to constantly track the hourly price before deciding when to charge their car or run appliances.
“We can automate all of this for you. You don’t have to think about it,” he said.
Some enthusiasts, however, like to get into the weeds.
Wouter van Embden, a 49-year-old Dutch entrepreneur and one of the country’s so-called green nerds, switched to Tibber earlier this year. On a recent summer Sunday, the battery in his home began charging as solar power flooded the Dutch grid and the wholesale power price fell to zero. He also charged his two electric cars and programmed his heat pump to make the water in the house tank extra hot.
Toward the evening, as prices rose with the drop-off in solar, van Embden’s battery—which he and his son built at home—would power his home as well as feed into the Dutch grid.
“I have to be honest, when I started building the battery I had so many outages. There was a lot of testing to do,” he said. “But now it’s working pretty stable.”
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China is launching the first regular Arctic cargo route to Europe, offering faster journeys and lower fuel costs as melting ice and Red Sea risks reshape global shipping.
4 min
Shipping cargo through an Arctic shortcut never made economic sense—until now.
Climate change and war in the Middle East are flipping the math that previously kept ships plying longer routes from Asia to Europe. A Chinese company on Saturday is starting the first regular cargo service to Europe through Arctic waters, seeking to reap the benefits of quicker travel time and less fuel use.
The shipper Sea Legend will dispatch the Dubai Tower from Ningbo, China, to Felixstowe in the U.K. on what it calls the Arctic Express, following a route along Russia’s north coast. The voyage by the vessel, which is capable of carrying 1,740 20-foot containers, is the biggest commercial step in the Arctic since a Maersk containership first completed the route in 2018.
Global warming is a big factor behind the new route, but it is not the only one. Nearly half the Arctic region’s summer ice—an area four times the size of Texas—has melted over five decades, clearing a fairly reliable path in the summer months. Meanwhile, high oil prices and attacks by Houthi rebels in the Red Sea have made the traditional routes costlier and more dangerous.
Beyond that, Beijing has ambitions to play a role in the Arctic’s future, lending a geopolitical dimension to the Chinese company’s shipping route.
Last year Sea Legend completed a trial run from Asia to Europe in a record 20 days. That is roughly half the time of a voyage via Africa’s Cape of Good Hope that many carriers now take because of the Red Sea uncertainty.
Fuel accounts for 70% or more of the costs while at sea, said Alan Murphy, a former Maersk analyst who runs research firm Sea-Intelligence.
Saving fuel by shortening the journey doesn’t automatically make a route profitable. Insurance premiums for the Arctic are 40% higher than the Cape of Good Hope route, said Jonathan Steenberg, an economist at credit insurer Coface. Sea Legend’s Arctic vessels are relatively small. And even after warming, an icebreaker is still sometimes needed to help the cargo ship.
But if the ship can go without an icebreaker, Coface said the Arctic route is now cheaper than a Cape of Good Hope voyage in some circumstances. It estimated that at current oil prices of around $90, the cost of shipping liquid bulk such as liquefied natural gas could drop roughly 33% compared with the Cape of Good Hope route, while dry bulk goods such as cereals would cost about 8% less.
The route is only passable in the summer and fall. Sea Legend plans eight voyages between August and late October, before conditions get too icy.
“It’s not the Suez Canal but it’s a significant number for the Arctic. It shows there is potential,” said Malte Humpert, founder of the U.S.-based Arctic Institute and author of a book on Chinese shipping in the Arctic.
Even in summer, ships have to navigate around dangerous ice floes and deal with rapidly changing weather. By the end of the shipping season in October, the sky is dark most of the time.
A Russian tanker suffered serious damage to its hull while sailing along the Arctic route despite being assisted by an icebreaker, its insurer, AlfaStrakhovanie, said Thursday, adding that it paid out roughly $650,000.
Coface estimates 3.5% of trade among East Asia, Europe and North America will be able to use Arctic routes within the next five years, representing $64 billion in goods.
Last summer, a record 23 cargo ships transited the Northern Sea Route, which hugs Russia’s north coast. That is tiny compared with the Suez Canal, where more than 30 ships transited daily.
Western companies that want to follow in Sea Legend’s path have to navigate treacherous politics. Russia claims sovereignty over the entire Northern Sea Route and permits for ship traffic are issued by its state-controlled nuclear operator, Rosatom.
“Western companies are in a tricky position,” said Humpert of the Arctic Institute. “At what point do they jump back in the water? When does it become economically necessary, and how do you weigh that against environmental risks and the political dimension?”
An alternative Arctic route, the Northwest Passage that connects the Atlantic and Pacific oceans via the Canadian Arctic, is less passable because it is dominated by narrow waterways where ice gets bunched up. The highest number of cargo ships completing the passage in a year was 13, in 2023.
China has declared itself a near-Arctic state despite not having access to Arctic waters. It depends on Russia’s goodwill to use the Northern Sea Route.
“Beijing is concerned that if they don’t establish a significant strategic presence in the Arctic now, it’s going to be more difficult in the future,” said Marc Lanteigne, expert in polar geopolitics at the Arctic University of Norway in Tromsø. However, he said, “China needs to be careful not to give the impression that they are trying to challenge the strategic order in the Arctic.”
Sea Legend didn’t respond to requests for comment.
Any polar venture contributes to China’s quest to master Arctic travel. The country also has three icebreakers and a support vessel currently on a monthslong scientific expedition north of Greenland. Scientific and commercial voyages can yield data about natural resources awaiting below melting ice caps and information for positioning nuclear-armed submarines.
