9REN Holding S.a.r.l v. Kingdom of Spain
ICSID · Investment (ICSID and treaty) · Spain · 31 May 2019
Why it matters
This award is one of the early ICSID decisions on Spain's renewable energy reforms, confirming that Spain's drastic reduction of feed-in tariffs breached the FET standard under the ECT. It established that specific regulatory commitments can create legitimate expectations, even in a dynamic regulatory environment, and that subsequent changes must be reasonable and proportionate. The case also addressed jurisdictional issues related to EU law and the Achmea decision.
Summary
9REN Holding S.à.r.l., a Luxembourg company, invested in eight photovoltaic solar plants in Spain between 2007 and 2008, relying on the feed-in tariff (FIT) regime established by Royal Decree 661/2007. This regime guaranteed a premium tariff for electricity generated from renewable sources for the useful life of the facilities. However, between 2010 and 2014, Spain enacted a series of reforms that drastically reduced or eliminated these benefits, including capping operating hours, imposing new taxes, and eventually replacing the FIT with a new remuneration system based on a 'reasonable return' on investment. 9REN claimed that these measures violated the Fair and Equitable Treatment (FET) standard under Article 10(1) of the Energy Charter Treaty (ECT). Spain argued that the regulatory framework was always subject to change and that the investor could not have a legitimate expectation of irrevocability, citing Spanish Supreme Court jurisprudence and the need to address the tariff deficit. The Tribunal, after finding jurisdiction (rejecting Spain's objections based on EU law, denial of benefits, and corporate structure), held that 9REN had a legitimate expectation that the FIT benefits under RD 661/2007 would continue for seven of its eight facilities. The Tribunal found that Spain's measures were not proportionate and frustrated that expectation, breaching the FET standard. However, the Tribunal dismissed claims for expropriation and breach of the umbrella clause. On quantum, the Tribunal awarded €41.76 million, applying a 20% reduction for the risk that the original regime might have been modified, and ordered compound interest at the 5-year Spanish government bond rate from 30 June 2014. Spain was also ordered to pay a portion of 9REN's legal costs and the full ICSID costs.
The detail
Parties: 9REN Holding S.a.r.l v. Kingdom of Spain
Case number: ICSID Case No. ARB/15/15
Outcome: Spain violated the Fair and Equitable Treatment standard under Article 10(1) of the Energy Charter Treaty. Spain ordered to pay €41.76 million plus interest and costs.
Quantum: €41.76 million
Applicable law: Energy Charter Treaty (ECT), ICSID Convention, Spanish law (Royal Decrees 661/2007 and 1578/2008)
Issues in play: The dispute involved the clash between Spain's sovereign right to regulate its energy sector in the public interest and the investor's legitimate expectation that the feed-in tariff regime under RD 661/2007 would remain stable for the life of the investment.
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