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.

On the 50th anniversary of its independence, Suriname announced a national roadmap including major public investment to develop its offshore oil reserves.
In its latest review, the International Energy Agency warns of structural blockages in South Korea’s electricity market, calling for urgent reforms to close the gap on renewables and reduce dependence on imported fossil fuels.
China's power generation capacity recorded strong growth in October, driven by continued expansion of solar and wind, according to official data from the National Energy Administration.
The 2026–2031 offshore programme proposes opening over one billion acres to oil exploration, triggering a regulatory clash between Washington, coastal states and legal advocacy groups.
The government of Mozambique is consolidating its gas transport and regasification assets under a public vehicle, anchoring the strategic Beira–Rompco corridor to support Rovuma projects and respond to South Africa’s gas dependency.
The British system operator NESO initiates a consultation process to define the methodology of eleven upcoming regional strategic plans aimed at coordinating energy needs across England, Scotland and Wales.
The Belém summit ends with a technical compromise prioritising forest investment and adaptation, while avoiding fossil fuel discussions and opening a climate–trade dialogue likely to trigger new regulatory disputes.
The Asian Development Bank and the Kyrgyz Republic have signed a financing agreement to strengthen energy infrastructure, climate resilience and regional connectivity, with over $700mn committed through 2027.
A study from the Oxford Institute for Energy Studies finds that energy-from-waste with carbon capture delivers nearly twice the climate benefit of converting waste into aviation fuel.
Signed for 25 years, the new concession contract between Sipperec, EDF and Enedis covers 87 municipalities in the Île-de-France region and commits the parties to managing and developing the public electricity distribution network until 2051.
The French Energy Regulatory Commission publishes its 2023–2024 report, detailing the crisis impact on gas and electricity markets and the measures deployed to support competition and rebuild consumer trust.
Gathered in Belém, states from Africa, Asia, Latin America and Europe support the adoption of a timeline for the gradual withdrawal from fossil fuels, despite expected resistance from several producer countries.
The E3 and the United States submit a resolution to the IAEA to formalise Iran's non-cooperation following the June strikes, consolidating the legal basis for tougher energy and financial sanctions.
The United Kingdom launches a taskforce led by the Energy Minister to strengthen the security of the national power grid after a full shutdown at Heathrow Airport caused by a substation fire.
New Delhi is seeking $68bn in Japanese investment to accelerate gas projects, develop hydrogen and expand LNG import capacity amid increased openness to foreign capital.
Germany will introduce a capped electricity rate for its most energy-intensive industries to preserve competitiveness amid high power costs.
Under political pressure, Ademe faces proposals for its elimination. Its president reiterates the agency’s role and justifies the management of the €3.4bn operated in 2024.
Solar and wind generation exceeded the increase in global electricity demand in the first three quarters of 2025, leading to a stagnation in fossil fuel production according to the latest available data.
The Malaysian government plans to introduce a carbon tax and strengthen regional partnerships to stabilise its industry amid emerging international regulations.
E.ON warns about the new German regulatory framework that could undermine profitability of grid investments from 2029.

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.