France’s National Assembly Demands Clarifications on Nuclear Funding

Le National demands transparency on France’s €100 billion nuclear financing plan as EDF struggles with EPR delays

According to Radio Lac, the Swiss daily Le National has called for official clarifications on how France will fund its €100 billion nuclear investment program, citing concerns over delays at EDF’s Flamanville EPR reactor and rising costs for new reactors. The request follows reports that France’s state-backed financing model—relying on loans from the Development Bank of France (Bpifrance) and subsidies from the energy transition fund—lacks detailed public disclosure, raising questions about long-term debt sustainability.

The push comes as EDF’s Flamanville EPR, the first of France’s new-generation reactors, faces repeated delays, with commercial operation now expected no earlier than 2027—three years behind schedule. Meanwhile, France’s nuclear regulator, the Autorité de Sûreté Nucléaire (ASN), has flagged safety concerns at the site, adding to cost pressures. A 2026 report by the French Court of Auditors warned that EDF’s €120 billion nuclear modernization plan could exceed initial budgets by as much as 20%, absent clearer financing guarantees.

Why is France’s nuclear financing model under scrutiny?
France’s plan to build six new EPR reactors by 2050 hinges on a mix of public loans and state subsidies, but critics argue the terms remain opaque. Unlike Germany’s phased nuclear phase-out, France’s strategy relies on extending reactor lifespans while building new capacity—a dual approach that requires unprecedented funding. Le National cited a June 15 analysis by the Institut de Radioprotection et de Sûreté Nucléaire (IRSN) showing that EDF’s cost overruns at Flamanville could reach €15 billion, or 40% above the original €3.3 billion estimate.

The Swiss newspaper’s intervention reflects broader unease in Europe over nuclear financing. In a May 2026 interview with Les Échos, EDF CEO Luc Rémont acknowledged that the company’s debt load—now €45 billion—would rise further if new reactors face similar delays. "We cannot afford another Flamanville," he said, adding that France’s energy transition fund, earmarked for €20 billion in nuclear subsidies, may need to be expanded.

How does France’s approach compare to other EU nuclear investments?
France’s model contrasts sharply with Poland’s decision to abandon its own EPR project in 2024 after cost estimates ballooned to €25 billion for a single reactor. Meanwhile, Finland’s Olkiluoto 3 EPR, under construction since 2005, remains €10 billion over budget—a case study cited by the IRSN in its June report. The European Commission has yet to finalize rules on classifying nuclear as "green" under its sustainable finance taxonomy, which could further complicate funding for French projects.

What comes next for EDF and France’s nuclear ambitions?
EDF’s 2026 strategic plan, published in April, outlines a €120 billion investment through 2035, with €50 billion allocated to new reactors. However, the plan assumes a 3% annual cost reduction—a target analysts at Jefferies described as "ambitious" in a June 10 note. The French government has signaled support for the program, with Economy Minister Bruno Le Maire stating in a June 14 press conference that "nuclear remains a priority for energy independence."

Yet, Le National’s demand for transparency highlights a key risk: without clearer financing terms, investors may hesitate to back the project. A June 13 survey by L’Argus de l’Assurance found that 68% of French institutional investors view EDF’s nuclear gambit as a "high-risk" bet, citing the lack of independent cost audits.

Key figures in the debate

• €100 billion: Estimated total cost of France’s nuclear investment program (2025–2050).
• €15 billion: Latest IRSN estimate for Flamanville EPR overruns (up from €3.3 billion baseline).
• €45 billion: EDF’s current debt level (as of Q1 2026).
• 2027: Revised target for Flamanville EPR commercial operation (originally 2023).
• €20 billion: France’s energy transition fund allocation for nuclear subsidies.

The stakes are high: France’s nuclear fleet supplies 70% of its electricity, and delays could force reliance on fossil fuels or imports—a scenario the government seeks to avoid amid geopolitical tensions. Le National’s call for clarifications underscores the need for France to address both technical and financial risks before proceeding with its nuclear expansion.