Brussels: The Energy Efficiency Directive is the subject of reasoned opinions sent to Greece, Spain, Italy and Malta on 1 October 2026, because the four states have not fully transposed Directive (EU) 2023/1791. The recast rules were due in national law by 11 October 2025, and the European Commission sent letters of formal notice to 26 member states in November 2025.

The four reasoned opinions are the second stage of the infringement procedure. Each country has two months to complete transposition, and the Commission may later refer it to the Court of Justice.

Why the Energy Efficiency Directive deadline matters

The recast Energy Efficiency Directive is a core piece of the Union’s climate and energy toolbox. It sets the framework for how member states plan, measure and report efficiency gains in buildings, industry and the public sector. When national laws are missing, public bodies and companies cannot be sure which duties apply.

Delay on the Energy Efficiency Directive is not only an administrative problem. Efficiency measures cut energy demand, which supports security of supply and lowers bills, so each month without clear national rules slows investment that businesses and municipalities may be ready to make.

From 26 notices to four opinions

The numbers show the pace of repair. Twenty-six states received letters of formal notice in November 2025, and by October 2026 only four faced the next stage in this case. This means most governments either notified their laws or satisfied the Commission that they were on track. The reading is an inference from the figures, not a statement in the package.

Greece, Spain, Italy and Malta now face the sharper stage. A reasoned opinion sets out the legal position, and a poor reply opens the way to the Court.

Building renovation plans add pressure

The same package raises a related issue. Nine member states did not submit draft National Building Renovation Plans required under Directive (EU) 2024/1275, the recast Energy Performance of Buildings Directive. The countries are Belgium, Czechia, Ireland, Italy, Luxembourg, Hungary, Malta, Poland and Slovakia. The drafts were due on 31 December 2025, the Commission sent letters in March 2026, and reasoned opinions followed on 1 October.

Italy and Malta appear on both lists. Their position suggests that efficiency policy is hard to deliver when national laws, building plans and funding programmes need to move at the same time.

Climate reporting and the wider enforcement picture

The package also covers integrated national energy and climate progress reports, due on 15 March 2025 under Regulation (EU) 2018/1999. Austria and Romania received reasoned opinions on that file. Energy planning and efficiency law therefore overlap, and a gap in reporting can undermine the Commission’s ability to judge whether the Union is on track for its 2030 goals.

The Commission’s energy services also noted a referral to the Court of Justice against Bulgaria over the electricity market directive, with a request for financial sanctions, to show that late energy law can end in court.

What happens next

The two-month deadlines will expire in early December 2026. Governments will likely rush to finish their Energy Efficiency Directive laws, and the Commission will assess each reply. Investors and local authorities should watch national gazettes, because the Energy Efficiency Directive often creates duties on public buildings and energy audits that need lead time.

If the four states close their gaps, the case will end without a Court hearing. If they do not, the Energy Efficiency Directive will join the list of rules that reached Luxembourg before they changed behaviour at home.