European energy prices have fallen beneath zero for a record variety of hours this yr, because the speedy growth of photo voltaic and wind era outpaces the continent’s means to cope with extra provide.
Electricity prices fell into destructive territory for 7,841 hours throughout the continent throughout the first eight months of the yr, in keeping with consultancy ICIS, with prices falling beneath minus €20 ($22) per megawatt hour in some cases.
Power prices may be extremely unstable and delicate to sudden shifts in demand or provide, which means occasionally customers may be paid to make use of electrical energy.
While useful to customers who’re capable of take benefit, for instance by charging an electrical automotive or working home equipment, it additionally threatens to undermine the viability of Europe’s renewable energy tasks, that are important to hitting web zero targets.
“It’s akin to a hara-kiri,” stated Bjarne Schieldrop, chief commodities analyst at Swedish lender SEB.
“Everyone knows that if you produce too much oil, the price will crash and producers lose money. And there’s nothing different in renewable energy and power either.”
Over the previous 5 years, the entire capability of Europe’s photo voltaic farms has greater than doubled from 127GW to 301GW, whereas wind capability has climbed from 188GW to 279GW, in keeping with energy think-tank Ember.
The development has helped to cut back reliance on fossil fuels and reduce emissions, with the output from wind and photo voltaic farms in Europe surpassing that from fossil gasoline energy crops throughout the first half of this yr for the primary time.
However, batteries and different storage or flexibility choices haven’t developed as rapidly, which means there are increasingly durations the place turbines are in impact paying customers to make use of up extra electrical energy. Power demand in Europe additionally has but to completely get well for the reason that energy disaster that started in late 2021 and led factories to shut output.
The scenario is exacerbated by authorities assist schemes that have been initially introduced in to assist speed up the transition to renewables, analysts have stated.
“The initial capex investment for solar projects and other renewables is such that they must keep trying to produce to seek that return on investment,” stated Naomi Chevillard, head of regulatory affairs at SolarPower Europe, an trade group.
Negative pricing marks the sharp finish of the so-called worth cannibalisation impact of renewables, which sees energy prices fall when it’s sunny and windy and renewables tasks are producing on the similar time.
The 7,841 hours of destructive prices within the eight months to the tip od August examine with final yr’s complete of 6,428 hours, and 675 hours in complete 5 years in the past when the system was extra dominated by fossil fuels.
Solar energy has been the primary driver of destructive pricing as photo voltaic assets are typically extra constant, resulting in destructive prices specifically throughout the spring and summer season and late mornings to early afternoon.
“When it is sunny in Germany it is often sunny in Greece and UK at the same time, and it is all producing in the middle of the day peaking at around 2pm,” stated Matthew Jones, head of energy analytics at ICIS.
“Wind is a bit more dispersed. It is not necessarily windy at all locations at the same time.”
Finland noticed the biggest variety of hours of destructive prices, partly on account of its giant hydro and nuclear capability, a few of which is troublesome to modify on and off rapidly. Italy, in the meantime, which nonetheless depends closely on gas-fired energy stations, didn’t have any destructive priced hours.
The EU has formidable targets to extend photo voltaic and wind energy to fulfill its local weather objectives. However, SEB’s Schieldrop warned that extra consideration wanted to be paid to storage and adaptability property or the speedy buildout would “run into trouble as prices crash”.
Mario Draghi, the previous European Central Bank governor, warned in his September 9 report on the bloc’s competitiveness that worth cannibalisation could “deter investments and slow the energy transition.
“It is therefore key that the uptake of renewables is accompanied by adequate investments in grids, flexibility and storage,” the report stated.
Jones at ICIS believes destructive pricing will “largely be solved” by 2030 as Europe builds extra batteries and installs extra electrolysers to make hydrogen.
These units use electrical energy to separate hydrogen from water, offering an additional supply of versatile demand for electrical energy, which might help stop destructive pricing.
However, worth cannibalisation would proceed to be a problem, he warned. “Prices will just go down to zero more, they won’t go into negative territory.
“But if you are a renewables developer the difference between zero and negative is not that massive.”