Investigation of Naturgy’s Anticompetitive Practices by the CNMC in Spain

The National Commission for Markets and Competition (CNMC) is investigating Naturgy for alleged anti-competitive practices in electricity distribution, including preferential treatment of certain complaints.

Share:

Enquête CNMC Naturgy pratiques anticoncurrentielles

Comprehensive energy news coverage, updated nonstop

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access • Archives included • Professional invoice

OTHER ACCESS OPTIONS

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

FREE ACCOUNT

3 articles offered per month

FREE

*Prices are excluding VAT, which may vary depending on your location or professional status

Since 2021: 35,000 articles • 150+ analyses per week

Spain’s National Commission for Markets and Competition (CNMC) has launched an in-depth investigation into Naturgy Energy Group SA, a major player in the Spanish energy sector, for alleged anti-competitive practices in the electricity distribution market. According to a CNMC press release, two Naturgy offices were searched as part of the investigation. This is not the first time that major companies in the sector have been the subject of a competition investigation in Spain. In fact, Repsol, Cepsa and BP were targeted by a similar investigation in 2022.

The focus of the investigation is on the activities of Naturgy’s electrical unit, UFD. The CNMC is seeking to determine whether UFD has preferentially and discriminatorily favored incidents and complaints filed by certain wholesalers in 2021 and 2022, to the detriment of other independent market players.

History of Sanctions

This investigation follows a fine imposed on Naturgy in July 2023. The CNMC had imposed a penalty of 6 million euros on the company for manipulating electricity prices in a specific market segment between 2019 and 2020. This sanction had already highlighted concerns about Naturgy’s commercial practices.
A Naturgy spokesman said the company complied with all applicable regulations in its dealings with wholesalers, and had not favored any of them. Naturgy has also indicated its willingness to cooperate fully with the CNMC throughout the investigation.

Implications for the Electricity Market

The current investigation could have a major impact on the Spanish electricity market. The alleged anti-competitive practices could harm free competition and disadvantage independent players. If the allegations are confirmed, this could lead to regulatory reforms aimed at strengthening transparency and fairness in the sector.
Spain’s electricity market has already been in the spotlight, with frequent debates on price regulation and the integration of renewable energies. This investigation is part of a wider context of increased scrutiny of the business practices of major energy companies.

Sector feedback and outlook

Reactions in the energy sector are mixed. Some analysts believe that this investigation is necessary to ensure healthy competition and protect the interests of consumers and small market players. Others, however, fear that this could lead to regulatory uncertainty that could dampen investment in the energy sector.
The CNMC plans to publish the results of its survey within 24 months. In the meantime, the industry will be closely monitoring developments and any implications for electricity market regulation policies.
In short, this investigation of Naturgy by the CNMC could not only affect the company itself, but also have wider repercussions for the Spanish electricity market. Careful analysis of the results will be crucial to understanding the competitive dynamics in this vital sector.

A key scientific report by the United Nations Environment Programme failed to gain state approval due to deep divisions over fossil fuels and other sensitive issues.
RTE warns of France’s delay in electrifying energy uses, a key step to limiting fossil fuel imports and supporting its reindustrialisation strategy.
India’s central authority has cancelled 6.3 GW of grid connections for renewable projects since 2022, marking a tightening of regulations and a shift in responsibility back to developers.
The Brazilian government has been instructed to define within two months a plan for the gradual reduction of fossil fuels, supported by a national energy transition fund financed by oil revenues.
The German government may miss the January 2026 deadline to transpose the RED III directive, creating uncertainty over biofuel mandates and disrupting markets.
Italy allocated 82% of the proposed solar and wind capacities in the Fer-X auction, totalling 8.6GW, with competitive purchase prices and a strong concentration of projects in the southern part of the country.
Amid rising public spending, the French government has tasked two experts with reassessing the support scheme for renewable electricity and storage, with proposals expected within three months.
National operator PSE partners with armed forces to protect transformer stations as critical infrastructure faces sabotage linked to foreign interference.
The Norwegian government establishes a commission to anticipate the decline of hydrocarbons and assess economic options for the country in the coming decades.
Kazakhstan plans to allocate 3 GW of wind and solar projects by the end of 2026 through public tenders, with a first 1 GW tranche in 2025, amid efforts to modernise its power system.
Hurricanes Beryl, Helene and Milton accounted for 80% of electricity outages recorded in 2024, marking a ten-year high according to federal data.
The French Energy Regulatory Commission introduces a temporary prudential control on gas and electricity suppliers through a “guichet à blanc” opening in December, pending the transposition of European rules.
The Carney–Smith agreement launches a new pipeline to Asia, removes oil and gas emission caps, and initiates reform of the Pacific north coast tanker ban.
The gradual exit from CfD contracts is turning stable assets into infrastructures exposed to higher volatility, challenging expected returns and traditional financing models for the renewable sector.
The Canadian government introduces major legislative changes to the Energy Efficiency Act to support its national strategy and adapt to the realities of digital commerce.
Quebec becomes the only Canadian province where a carbon price still applies directly to fuels, as Ottawa eliminated the public-facing carbon tax in April 2025.
New Delhi launches a 72.8 bn INR incentive plan to build a 6,000-tonne domestic capacity for permanent magnets, amid rising Chinese export restrictions on critical components.
The rise of CfDs, PPAs and capacity mechanisms signals a structural shift: markets alone no longer cover 10–30-year financing needs, while spot prices have surged 400% in Europe since 2019.
Germany plans to finalise the €5.8bn ($6.34bn) purchase of a 25.1% stake in TenneT Germany to strengthen its control over critical national power grid infrastructure.
The Ghanaian government is implementing a reform of its energy system focused on increasing the use of local natural gas, aiming to reduce electricity production costs and limit the sector's financial imbalance.

All the latest energy news, all the time

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access - Archives included - Pro invoice

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

*Prices shown are exclusive of VAT, which may vary according to your location or professional status.

Since 2021: 30,000 articles - +150 analyses/week.