French Photovoltaic Power Generation Breaks Record, Electricity Prices Unexpectedly "Crash" to Negative Values

On Friday, the solar power generation in France soared to a historical record, far exceeding the expectations of the grid operator, directly causing the spot electricity prices to fall into negative territory. Data from the French grid operator RTE showed that solar installed capacity surged to around 20 gigawatts, breaking the historical peak set in July last year. Normally, when the market anticipates a large amount of solar power generation, it will digest the expectation of oversupply in advance, leading to negative electricity prices in advance. However, this unexpected increase in generation this time was a sudden situation, and the spot electricity prices fell below zero only on Friday. For traders, the fluctuations in renewable energy generation caused by weather factors, which in turn trigger price fluctuations, have become a profitable opportunity. Due to the frequent deviations in the supply and demand trends of electricity from market predictions, the profit potential in the short-term electricity trading market is continuously expanding. RTE data also showed that the nuclear power generation in France remained high, stabilizing at around 33 gigawatts. In recent weeks, to ensure the stability of the power system, French power companies have continued to operate nuclear power plants at full capacity even in the face of a significant drop in electricity prices. Friday was a public holiday in France, and during the noon hours local time, the combined output of solar and nuclear power exceeded the total societal electricity demand by about 10 gigawatts, with the excess electricity being exported to neighboring countries. This price anomaly highlights a structural imbalance in the French power system: the highly volatile solar power generation is mismatched with the weak flexibility of nuclear power installations, and the intraday electricity market can only passively absorb the price impact from the supply-demand mismatch.