BRUSSELS - Europe is baking under successive heatwaves that have shattered temperature records across the continent this summer. Forests are burning, rivers are drying up even in temperate climate zones, and air conditioners are running at full tilt. Yet amid this scorching reality, one market dynamic has defied expectations: solar module prices are not rising with the heat-they are cooling down.
According to the latest PV price index from pvXchange.com, solar module prices remain broadly stable, with oversupply continuing to exert downward pressure even as installers' order books stay strong. The phenomenon encapsulates the paradox of Europe's solar market in the summer of 2026: unprecedented demand for electricity, record solar output, but a pricing environment that offers little relief to manufacturers while presenting attractive opportunities for buyers.
Heatwave Drives Power Demand to Record Levels
Europe's power grids have been put to the test. According to energy think tank Ember, during heatwaves beginning in late June, daily power demand increased by as much as 28% in Italy, 23% in Hungary, 14% in France, and 13% in Spain, compared to the week preceding the heatwaves when temperatures were closer to seasonal averages. Local temperatures have exceeded 40°C on consecutive days across swathes of Central and Eastern Europe, with August showing little sign of relief.
The soaring demand has been driven primarily by air conditioning use in households, public buildings, and commercial and industrial facilities. At the same time, the extreme heat has constrained supply from other generation sources. Hydropower production fell to its lowest level in at least a decade for May, June and July. In Hungary and Romania, record low Danube water levels sharply reduced output from nuclear power stations, which typically provide 40% and 15% of their respective electricity generation.
The result has been dramatic price spikes in electricity markets. Day-ahead power prices in France and Italy reached €313/MWh and €285/MWh respectively during peak periods, while French day-ahead prices surged 20.5% on a single day in August to €141/MWh. Italian wholesale electricity prices hit €197.71/MWh on August 3, the highest since January 2023. Average daily power prices during earlier heatwaves rose 119% in Hungary, 44% in France, 13% in Italy and 7% in Spain, with notable spikes in the early evening.
Solar Steps Up-But Prices Stay Flat
Record solar output has helped keep the grid stable during daylight hours. Ember reports that solar production was up to 17% higher on heatwave days compared to other days in June and July, helping to cover increased demand while other power sources struggled. In some markets, solar has covered more than 50% of daytime demand during August.
Yet the surge in generation has not translated into higher module prices. On the contrary, prices in some segments have seen renewed declines. According to OPIS assessments, Delivered Duty Paid (DDP) prices for imported TOPCon modules above 600Wp averaged €0.109 ($0.124)/Wp in early July, with smaller-format TOPCon modules available in European warehouses remaining unchanged at around €0.111/Wp ex-works. Tier-1 PERC modules are trading in the range of €0.08-0.12/Wp, while TOPCon modules command a premium of only €0.01-0.03/Wp.
Martin Schachinger of pvXchange.com notes that production surpluses need to be cleared, putting pressure on market prices-particularly for modules intended for large rooftop systems and ground-mounted projects. The market remains structurally oversupplied, with large inventories accumulated over the past two years continuing to weigh on pricing.
Policy Uncertainty Constrains Deployment
If the logic of supply and demand alone dictated outcomes, Europe's heat-driven electricity crunch should have accelerated renewable energy deployment. Yet governments remain largely silent on the bigger picture, offering short-term measures to mitigate the effects of climate change without addressing the fundamental need to accelerate the energy transition.
Instead, policy uncertainty is casting a long shadow over the market. In Germany, the draft EEG 2027 renewable energy law has sparked fierce resistance from industry associations and within the governing coalition. The proposal would eliminate feed-in tariffs for new PV systems up to 25 kW, potentially sharply impacting investment and threatening jobs. The German Solar Association (BSW-Solar) has warned that the reforms could weaken investment and slow solar deployment.
At the EU level, multiple supply chain restriction policies are advancing, including the Net Zero Industry Act (NZIA), the Industrial Accelerator Act (IAA), and restrictive measures targeting inverters from so-called high-risk countries. The IAA proposal would require that, from three years after entry into force, projects awarded through public procurement, auctions for net-zero technology and public support schemes must include PV inverters and solar cells manufactured in the EU. While these policies aim to strengthen domestic manufacturing, they also raise supply chain thresholds and create uncertainty for project developers.
A Market at a Crossroads
The combination of policy uncertainty and persistent oversupply has created a peculiar market dynamic. Demand for photovoltaic systems, while not declining, is not growing exponentially either. Some buyers are adopting a "wait-and-see" approach, anticipating a significant deterioration in investment and installation conditions next year.
SMM expects total new solar installations in the European market to fall to around 68.5GW in 2026, a year-on-year decline of about 2%. Growth in Europe's distributed market has remained relatively steady, while utility-scale projects are constrained by project returns, grid connection conditions, and frequent periods of negative electricity prices.
Yet there are signs that the market is entering a new phase. Procurement decisions are increasingly driven by logistics, policy, technology and long-term project economics rather than price alone. Battery storage has moved from an optional addition to a central component of project economics. And after two years of unprecedented price declines, some manufacturers have become less willing to accept orders at prices they consider uneconomic.
The View Ahead
Whether module prices will fall much further this year remains uncertain. According to manufacturers, prices are unlikely to decline significantly for the remainder of 2026. But much depends on developments surrounding Germany's EEG 2027 and the broader EU policy framework following the summer recess.
For now, Europe finds itself in a paradoxical position: record heat is driving unprecedented electricity demand and proving solar's value as a grid-stabilizing force, yet policy uncertainty and structural oversupply are keeping module prices cool. As Schachinger observes, the obvious response to the climate crisis would be to accelerate the energy transition and make renewable power generation a top priority. Whether policymakers will rise to that challenge-or continue to offer short-term fixes while the mercury keeps rising-remains the defining question for Europe's solar future.
