Welink Energy Portugal 2 UK Limited, the UK-based company that controls the Solara4 photovoltaic plant in Alcoutim, southern Portugal, has entered administration after lower-than-expected generation, depressed wholesale electricity prices, and technical issues affected the project’s revenue and cash flow.

The special-purpose vehicle, owned by British renewable energy developer Welink Energy, entered administration on 11 June 2026, according to a document filed with the UK’s official Companies House register.

The 220 MW facility has been operational since 2021 and was Portugal’s largest solar plant when it entered operation.

According to a report cited by Portuguese media, Solara4 has consistently generated less electricity than initially forecast. The difficulties have coincided with a significant expansion of solar capacity across the Iberian electricity market, contributing to lower wholesale power prices during periods of high solar generation and putting further pressure on the project’s revenues.

Solara4 was developed as one of Portugal’s first large-scale solar projects without a guaranteed regulated tariff, leaving its business model more exposed to wholesale electricity market conditions. The project consists of 661,500 solar modules spread across approximately 320 hectares of non-contiguous land. Its original design envisaged annual electricity generation of around 382 GWh.

In addition to market pressures, technical issues and fires have resulted in periods of downtime and higher maintenance costs. The plant is also involved in a legal dispute with China Triumph International Engineering (CTIEC), which was responsible for its construction. In proceedings before the High Court last July, CTIEC claimed £17.2 million (€20 million) from the WeLink group over outstanding debts related to solar projects.

The project also has exposure of around €64 million involving Investec and Kommunalkredit Austria, which have been identified as its principal creditors.

The insolvency proceedings do not necessarily mean that the plant will cease operations. The stated objective is to improve the asset’s operational performance and prepare it for a potential sale to new investors.

Management of the project has shifted from Welink Investments to Exus. Exus, together with Enertis, is expected to assess the investment required to restore and increase the plant’s electricity generation.

The project’s future could also include hybridization with wind generation and battery energy storage. The wind component, however, remains subject to a decision by the Portuguese Environment Agency.

Solara4’s insolvency has also prompted debate over the conditions under which large-scale solar projects were developed in Portugal.

Some social media users have linked the case to Portugal’s 2019 solar auctions, which produced record-low bids, including a price of €14.76/MWh. However, that comparison does not directly apply to Solara4, which was developed as a merchant project rather than under a subsidized or guaranteed tariff.

João Galamba, Portugal’s former secretary of state for energy, has rejected the connection with the auctions. In a social media post, he instead pointed to delays in the project’s administrative procedures, saying that a licensing process had started in 2023.