China’s Growing Influence in Portugal’s Energy Sector: A Threat to Europe?

China’s increasing investments in Portugal’s energy sector, particularly through state-owned enterprises like China Three Gorges (CTG) and State Grid Corporation of China, have raised concerns about potential threats to Europe’s energy security and geopolitical stability. Since 2011, Chinese firms have acquired significant stakes in Portugal’s largest utility, Energias de Portugal (EDP), and the national grid operator, Redes Energéticas Nacionais (REN). These investments, driven by Portugal’s privatization needs during its 2011–14 debt crisis, have positioned China as a major player in the country’s energy infrastructure. While these partnerships have bolstered Portugal’s renewable energy ambitions, they have sparked debates about foreign control over critical infrastructure, with implications for Europe’s energy sovereignty and strategic autonomy. This article examines China’s influence in Portugal’s energy sector and assesses whether it poses a broader threat to Europe.

Background of Chinese Investments

Portugal’s energy sector became a target for Chinese investment during the country’s 2011–14 financial crisis, when the European Union and International Monetary Fund mandated privatization of state assets to reduce debt. In 2011, CTG acquired a 21.35% stake in EDP, Portugal’s leading utility and the world’s fourth-largest wind energy producer, for €2.7 billion, outbidding competitors like Germany’s E.ON and Brazil’s Eletrobras. By 2022, CTG had increased its stake to 23%, while another Chinese state-owned entity, CNIC, held a 5% stake, giving China significant influence over EDP. Additionally, in 2012, State Grid purchased a 25% stake in REN, Portugal’s national grid operator, for €387 million, making it the largest shareholder.

In 2018, CTG attempted a €9.07 billion takeover of EDP’s remaining shares, offering a 5% premium deemed too low by EDP’s shareholders, who rejected the bid in 2019. The move raised alarms about China potentially gaining near-total control of Portugal’s power grid, with posts on X in 2024 echoing these concerns, warning of “China’s grip” on critical infrastructure. These investments align with China’s Belt and Road Initiative (BRI), aiming to expand its global clean energy footprint and secure technological know-how.

Nature of China’s Influence

China’s stakes in EDP and REN extend beyond financial investment, granting strategic leverage in Portugal’s energy sector. EDP, with its extensive renewable energy portfolio in wind, solar, and hydro across Europe, Brazil, and the U.S., is a key player in the global clean energy market. CTG’s investment has facilitated joint ventures, including €2 billion in wind energy projects and technology transfers, positioning China to influence EDP’s operations and innovation strategies. Similarly, State Grid’s 25% ownership in REN, which operates Portugal’s electricity transmission grid, gives China a foothold in critical infrastructure management.

A 2023 statement by Portuguese Renewable Energy Association president Pedro Amaral Jorge highlighted the high quality of Chinese solar products, with 700 megawatts of photovoltaic (PV) products installed annually in Portugal, mostly from Chinese suppliers. Additionally, a joint R&D center established in 2013 by State Grid and REN has advanced smart grid and renewable energy technologies, benefiting both nations but raising questions about dependency. Recent posts on X also noted exploratory talks in June 2025 between China National Nuclear Corporation (CNNC) and Portuguese officials for two 1200 MW nuclear reactors, signaling further Chinese ambitions in Portugal’s energy landscape.

Potential Threats to Europe

Energy Security Risks

China’s influence over Portugal’s energy infrastructure raises concerns about energy security, particularly given the state-owned nature of CTG and State Grid, which are subject to directives from the Chinese Communist Party. A 2025 power outage in Spain, Portugal, Andorra, and parts of France, while not linked to a cyberattack, highlighted the fragility of Europe’s interconnected grids and amplified fears of vulnerabilities tied to Chinese technology. The discovery of undeclared remote access devices in Chinese-made solar inverters in the U.S. further fueled concerns about potential sabotage or espionage in Europe, where 80–95% of solar components come from China. Posts on X in October 2024 warned that Chinese control over Portugal’s grid could enable disruptions, citing state-sponsored hacking risks.

The EU’s reliance on Chinese solar components, driven by Beijing’s subsidies that reduced panel costs by 80% over a decade, has created a dependency that complicates diversification efforts. Portugal’s geographic isolation and limited energy interconnections with Europe exacerbate these risks, as foreign control over its grid could disrupt regional energy flows.

Geopolitical Leverage

China’s investments have been linked to shifts in Portugal’s foreign policy. EU officials have noted that countries with significant Chinese investments, like Portugal and Greece, tend to adopt less critical stances on China’s human rights record or geopolitical actions. In 2017, Greece blocked an EU statement condemning China’s human rights abuses, a move attributed to Chinese investments in its energy and port infrastructure. Similarly, Portugal’s openness to Chinese investment, as noted by Foreign Minister Augusto Santos Silva in 2018, has fostered a “strategic partnership” that may temper its alignment with EU policies critical of China.

Economic and Technological Dependency

China’s stakes in EDP and REN provide access to advanced renewable energy technologies and markets, aligning with its goal to become a global clean energy leader by 2025. However, this creates a risk of technology transfer that could undermine Europe’s competitiveness. The EU’s 2023 Foreign Direct Investment (FDI) screening framework flagged 11% of transactions for in-depth review, reflecting growing caution about Chinese acquisitions in strategic sectors. Portugal’s reliance on Chinese solar products and potential nuclear investments could deepen this dependency, limiting Europe’s ability to develop indigenous energy solutions.

Counterarguments and Benefits

Chinese investments have brought tangible benefits to Portugal. The €2.7 billion CTG invested in EDP and €2 billion in joint ventures have supported Portugal’s renewable energy goals, with the country achieving 100% renewable energy production in March 2025. State Grid’s partnership with REN has enhanced smart grid capabilities, positioning Portugal as a leader in energy innovation. Portuguese officials, including Secretary of State for Energy Ana Fontoura Gouveia, have praised the stable and productive China-Portugal relationship, emphasizing economic advantages.

Critics of the “threat” narrative argue that foreign investment, regardless of origin, is essential for capital-starved economies like Portugal’s post-2011 crisis. A 2018 Reddit thread on r/europe questioned whether Chinese ownership of EDP poses a genuine security risk, suggesting that market-driven investments are less threatening than state-controlled grids. Moreover, the EU’s merger regulations ensure that significant acquisitions, like CTG’s failed 2018 bid, face scrutiny, mitigating risks of total control.

Broader Implications for Europe

China’s influence in Portugal’s energy sector is part of a broader pattern of strategic investments across Europe, including Greece, Hungary, and Italy, where Chinese firms control stakes in ports, grids, and renewable projects. The EU’s 2022 NIS2 directive and FDI screening framework aim to address these risks, but the lack of a unified mechanism to block foreign takeovers limits their effectiveness. A 2025 European Council on Foreign Relations report warned of a “second China shock,” where Chinese overcapacity in clean tech could outcompete European industries, threatening Germany’s automotive sector and central Europe’s industrial heartland.

Portugal’s case highlights the challenge of balancing economic benefits with strategic autonomy. While Chinese investments have accelerated Portugal’s energy transition, they risk creating dependencies that could compromise Europe’s resilience. The proposed nuclear reactor project, if realized, could further entrench China’s role, raising questions about long-term control over critical infrastructure.

China’s deep involvement in Portugal’s energy sector, through significant stakes in EDP and REN, presents both opportunities and risks for Europe. While investments have fueled Portugal’s renewable energy ambitions and economic recovery, they raise concerns about energy security, geopolitical leverage, and technological dependency. The EU’s growing scrutiny of Chinese acquisitions, coupled with incidents like the 2025 Iberian blackout and warnings of remote access vulnerabilities, underscores the need for robust safeguards. As Portugal navigates its energy partnership with China, Europe must strengthen its FDI screening and cybersecurity measures to protect critical infrastructure, ensuring that economic benefits do not come at the cost of strategic autonomy.