Key data
| Regulation | Royal Decree-Law 18/2026, of June 29 |
|---|---|
| Publication | June 30, 2026 |
| Entry into force | June 30, 2026 |
| Affected parties | Households, transport operators, farmers, livestock breeders, fishermen and energy-consuming companies |
| Category | Energy |
| Year | 2026 |
| Expected expiration | End of September 2026 |
| Regulation being extended | Royal Decree-Law 7/2026 (Comprehensive Response Plan to the Middle East Crisis) |
| Wholesale electricity price | 41–54 €/MWh (below European average) |
| Impact on CPI | Reduction of 1 percentage point |
| External energy dependency | 67% of total consumption |
Energy-consuming companies and sectors most exposed to energy costs have continuity guaranteed in fiscal relief measures, at least until the end of September 2026. The Royal Decree-Law 18/2026, published on June 30, extends in a staggered manner the measures of the Comprehensive Response Plan to the Middle East Crisis, initially approved through RDL 7/2026. The key for financial and operational managers is that the withdrawal is not abrupt: it occurs as energy markets stabilize, and there is an automatic safety net if prices spike again.
What does this regulation establish?
RDL 18/2026 introduces four differentiated blocks of measures:
| Measure | Detail | Validity |
|---|---|---|
| Energy tax cuts (electricity, gas, fuel) | Progressive and staggered withdrawal as markets stabilize | Until end of September 2026 |
| Direct aid to transport operators, farmers, livestock breeders and fishermen | Maintained in full throughout the period due to their special exposure to energy costs | In full until end of September 2026 |
| Automatic safeguard mechanism | Reactivates all measures if energy prices rise significantly | Active throughout the extension period |
| Renewable boost and demand electrification | Measures to reduce external energy dependency, currently at 67% of total consumption | Long-term structural measures |
The most relevant element for business planning is the staggered withdrawal of tax cuts: there will be no "fiscal cliff" on October 1, but a gradual transition linked to the actual evolution of prices. Furthermore, the safeguard mechanism eliminates the risk of an uncovered sharp rebound: if markets become tense again, measures are automatically reactivated without the need for new regulation.
Economic and operational impact
Current measures have demonstrated quantifiable effectiveness: they have reduced CPI by 1 percentage point and have kept the wholesale electricity price between 41 and 54 €/MWh, below the European average. This translates into lower operating costs for any company with significant energy consumption.
For sectors with direct aid (transport, agriculture, livestock and fishing), the full continuity of subsidies throughout the period avoids the need to adjust rates or selling prices in the short term. Real uncertainty begins from October 2026, when measures expire unless the safeguard mechanism is activated.
From a financial planning perspective, the horizon is clear: companies have until the end of September 2026 with the current scenario, and must budget for the post-measures scenario for the fourth quarter. External energy dependency of 67% of total consumption indicates that structural exposure to the international market persists beyond cyclical measures.
Who does it affect?
- Transport operators: maintain full direct aid until September 2026.
- Farmers and livestock breeders: maintain full direct aid throughout the period.
- Fishermen: included in the direct aid block due to their high exposure to energy costs.
- Energy-consuming companies (electricity, gas, fuel): benefit from tax cuts while they last, with progressive withdrawal until September.
- Households: also included in the scope of energy tax cuts.
- CFOs and financial directors: must review Q4 2026 energy budget given the expected expiration of measures.
Practical example
A road freight transport company with a fleet of 20 vehicles has been benefiting for months from the direct aid provided for in RDL 7/2026. With the extension approved by RDL 18/2026, that aid remains intact until the end of September 2026, without progressive reduction (unlike general fuel tax cuts, which are withdrawn in a staggered manner).
If in August 2026 diesel prices spike significantly due to new tension in international markets, the automatic safeguard mechanism reactivates all measures without waiting for new regulation. The company does not need to request anything: reactivation is automatic.
For Q4 2026, the financial director of this company must contemplate in their budget the scenario of measure expiration from October onwards, estimating the increase in fuel and energy costs according to market prices at that time, and evaluate whether to pass that cost on to rates or absorb it.
What should companies do now?
- Verify if you are a direct aid beneficiary: if you operate in transport, agriculture, livestock or fishing, check that you are receiving the aid provided for in RDL 7/2026, extended in full until September 2026.
- Review Q4 2026 energy budget: tax cuts on electricity, gas and fuel expire at the end of September. Calculate the impact on your income statement with market prices without bonuses.
- Monitor the safeguard mechanism: if energy prices rise significantly before September, measures are automatically reactivated. Keep track of the wholesale electricity price (current reference: 41–54 €/MWh).
- Plan post-September energy strategy: external dependency of 67% of total consumption does not disappear with measures. Evaluate long-term supply contracts, renewable self-consumption or process electrification to reduce exposure.
- Communicate with suppliers and customers: if your business model passes on energy costs, inform in advance of the possible rate review from October 2026 onwards.
Frequently asked questions
How long do tax cuts on electricity, gas and fuel last?
Tax cuts are withdrawn progressively and in a staggered manner, with expiration expected at the end of September 2026. The withdrawal is not abrupt: it occurs as energy markets stabilize, according to RDL 18/2026.
Do transport operators and farmers lose their aid with the progressive withdrawal of tax cuts?
No. Direct aid to transport operators, farmers, livestock breeders and fishermen remains intact throughout the extension period, until the end of September 2026, precisely because of their special exposure to energy costs.
What happens if energy prices rise again before September 2026?
RDL 18/2026 incorporates an automatic safeguard mechanism that reactivates all measures if energy prices rise significantly. No new regulation is necessary: reactivation is automatic.
What is the current wholesale electricity price in Spain and how does it compare to Europe?
Thanks to current measures, the wholesale electricity price in Spain has remained between 41 and 54 €/MWh, below the European average. The measures have also contributed to reducing CPI by 1 percentage point.
What regulation does RDL 18/2026 extend and what changes from it?
RDL 18/2026 extends Royal Decree-Law 7/2026, which established the Comprehensive Response Plan to the Middle East Crisis. The main change is the introduction of staggered withdrawal of general tax cuts (rather than maintaining or eliminating them outright) and the incorporation of the automatic safeguard mechanism.
Official source
Consult complete regulation in official source
Disclaimer: This article is for informational purposes only and does not constitute legal advice. For specific decisions, consult a qualified professional. Source: https://www.boe.es/diario_boe/txt.php?id=BOE-A-2026-14112