Pollution
Humain
Environnement
Economique

Fire broke out around 5 pm on a 660-kW wind turbine at a wind power farm; a neighbour sounded the alarm at 5:30 pm. Incandescent projections ignited 80 m² of adjoining scrubland. Fire-fighters extinguished the blaze by 9:30 pm. The facility operator installed a safety beacon at dawn the next day. After a turbine blade fell at 3:20 pm, round-the-clock monitoring was initiated. On 8 November, the municipality issued an order prohibiting use of the wind turbine access path.

The fire started in the electrical box at the base of the turbine. Malfunction of the turbine’s circuit-breaker caused short-circuit currents to spread, in melting cables and sparking a fire in the nacelle. Once fire at the base had rendered control instruments inoperable, a turbine brake malfunction might have been an aggravating factor.

This accident raised questions over the reliability of electrical protection systems, as well as the possibility of an additional events (i.e. fire spreading to nearby vegetation, a fallen blade), and suggested improvements in detecting and locating wind turbine fires, as well as in reducing response times.