Greece’s aging power grid blamed for catastrophic wildfires

ATHENS — Sparks from Greece’s aging electricity grid are responsible for a disproportionate share of the country’s most destructive wildfires, according to preliminary data from Greece’s Arson Crimes Investigation Directorate and evidence from recent fire investigations. While power infrastructure accounts for only a small share of wildfire incidents, fires sparked by the grid often break out under the most dangerous conditions — during high winds, in periods of heavy electricity demand and often in remote, fire-prone areas — making them more likely to spread rapidly and become catastrophic. According to the Arson Crimes unit, fires linked to the electricity grid account for about 75 percent of the land burned in Greece this year. Two deadly wildfires in late July — one in western Attica and one on the island of Crete —were also linked to the electricity grid in preliminary findings from the Greek fire brigade. The fires destroyed more than 36,000 acres and killed four people. “Six out of 10 major fires and 55 percent of the area burnt in 2025 were caused by the power grid,” said Elias Tziritis, wildfires actions coordinator at World Wildlife Fund Greece. “Statistically speaking, the majority of fires may not start from the power grid, but these are the ones that cause the most major, devastating fires.” Loose or sagging power lines, vegetation coming in contact with cables, dust buildup on transmission equipment and other such faults can all generate sparks. The risk rises during strong winds and periods of heavy electricity demand, when aging infrastructure is under greater strain. Much of Greece’s electricity grid was installed decades ago and runs above ground through fire-prone forests and increasingly depopulated rural areas. In the 1960s, the country opted for an overhead network as a cheaper way to extend electricity across the country, while the prolonged financial crisis that began in 2009 further constrained investment in the system. Critics say Greece has moved too slowly to bury distribution lines and adapt the network to increasingly severe fire conditions. “We raised the issue years ago, calling for something to be done with the power grid urgently,” said Christos Kalogeropoulos, a retired lieutenant-general with the Fire Service and former director of the Arson Crimes unit. “We have been calling for urgent underground cabling.” Greece’s power distribution operator HEDNO disputes suggestions that the network is a major cause of wildfires, saying only about 1 percent of wildfire incidents recorded in 2025 were attributed to the electricity grid, compared with roughly 3 percent in the U.S. The company also said its crews have been deployed to major fire fronts to support emergency services and restore electricity to affected communities. “The easy targeting of HEDNO whenever a fire breaks out serves neither the truth nor the protection of the public but creates false impressions, and, in many cases, appears to serve short-term expediencies and self-serving agendas by covering up local responsibilities,” said the company in a statement. Following the fire in Crete, authorities arrested two HEDNO network operations and maintenance managers, who were later released. In Viotia, where a late-July fire spread into western Attica, investigators suspect sparks came from equipment on a private wind farm. A local mayor, a contractor and a company owner were taken into custody last week. Energy Minister Stavros Papastavrou said the government plans to tighten rules governing private power projects. But experts warn that focusing on private operators risks obscuring the broader problem of an aging public grid. Moving cables underground is expensive and time-consuming, said Paleologos Paleologou, associate professor of forest protection at the Agricultural University of Athens. Paleologou said researchers need access to detailed data on the location of power lines and pylons to model where the network is most vulnerable. “If w