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Spain's solar industry warns of price threat to energy transition

Published by Global Banking & Finance Review

Posted on October 7, 2025

2 min read

· Last updated: January 21, 2026

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Spain's solar industry warns of price threat to energy transition
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MADRID (Reuters) -Spain this year has clocked a growing number of hours with solar power prices at zero or even negative levels, which arise when supply exceeds demand and producers need to pay to

Spain's Solar Sector Raises Alarm Over Energy Transition Costs

MADRID (Reuters) -Spain this year has clocked a growing number of hours with solar power prices at zero or even negative levels, which arise when supply exceeds demand and producers need to pay to offload power or stop plants, industry group UNEF said on Tuesday, a trend that could compromise the country's green energy shift.

KEY NUMBER

Between January and September this year, solar power producers faced 693 hours of negative or zero power prices, reaching the total for last year, UNEF said.

"This issue, along with low and unstable capture prices show that reforms of electricity prices are urgent," said UNEF head Jose Donoso, referring to the average price per megawatt-hour solar power producers receive for the electricity sold in the market.

WHY IT IS IMPORTANT

Spain has set ambitious targets in its climate and energy plan. The warning comes as the country needs to speed up the rollout of renewables projects to meet such goals.

CONTEXT

Zero or even negative power prices have become a growing issue for Europe in general. The massive expansion of renewable power contributes to a mismatch between demand and supply, aggravated by a lack of necessary storage capacity.

(Reporting by Pietro Lombardi; Editing by Alexandra Hudson)

Key Takeaways

  • Spain's solar power prices hit zero or negative levels.
  • 693 hours of negative or zero prices recorded this year.
  • UNEF calls for urgent electricity price reforms.
  • Spain aims to meet ambitious climate and energy targets.
  • Europe faces growing renewable energy supply-demand mismatch.

Frequently Asked Questions

What is solar power?
Solar power is energy derived from the sun's rays, which can be converted into electricity or heat using solar panels and other technologies.
What are negative power prices?
Negative power prices occur when electricity supply exceeds demand, causing producers to pay to offload their power instead of receiving payment.
What is renewable energy?
Renewable energy is energy generated from natural resources that are replenished constantly, such as solar, wind, and hydropower.
What are electricity prices?
Electricity prices refer to the cost per unit of electricity consumed, which can fluctuate based on supply and demand dynamics in the market.
What is energy transition?
Energy transition is the process of shifting from fossil fuel-based energy systems to renewable energy sources to reduce carbon emissions and combat climate change.

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