Germany’s online Report24 recently discussed the insolvency of Solara4. This park (at Alcoutim in the Algarve) was once celebrated as Portugal’s largest flagship solar park (~219 MW), built without traditional state-backed feed-in tariffs. A major problem was the high solar expansion across the Iberian Peninsula, which today means thousands of megawatts of solar power hit the grid simultaneously during peak sunny hours. This oversupply causes wholesale electricity prices to drop to zero or into negative territory precisely when the plant’s production is highest, drastically reducing expected revenue.

Moreover, the solar park consistently produced less electricity than originally calculated in initial forecasts, which undermined the project’s financial projections despite having a long-term Power Purchase Agreement (PPA).

The huge solar park also suffered several technical failures, including inverter fires within the 12 months leading up to insolvency. A major fire in late May 2026 knocked out roughly 10% of the facility, taking an estimated 8 to 14 weeks to repair and leading to costly downtime and maintenance fees.

As a capital-intensive project, the solar park carried significant remaining debt (tens of millions of euros) owed to primary lenders like Investec and Kommunalkredit Austria. Ongoing fixed costs (maintenance, insurance, interest) became unmanageable as refinancing deadlines approached.

Another factor is that the operating company faces an ongoing arbitration dispute with Chinese contractor CTIEC (China Triumph International Engineering), which claims approximately €143 million from a cancelled construction contract.

The holding company, WElink Energy Portugal 2 (UK) Limited, entered insolvency administration on June 11, 2026, though the solar plant itself continues to generate electricity.

To survive the price collapses, WElink planned to transform the site into a hybrid facility with wind power and a 100 MW battery storage system. Ironically, while the original solar park was touted as subsidy-free, the new battery system is backed by €16.45 million in public funding from Portugal’s Recovery and Resilience Plan (PRR).

Report24 argues that “free solar energy” does not equal economically viable power. Capital costs, timing of generation, grid stability, and price cannibalization pose severe financial risks for massive, un-subsidized solar installations.

In summary, Europe’s green energy revolution is going the way of communism: lots of rosy promises turning into an economic debacle. Collapse is inevitable.