During the Heritage Days of 2026, Électricité de France (EDF), the country's main electricity producer, is giving the public an exclusive look inside its electricity production facilities, including its nuclear power plants. Around 70 sites across France will be open to visitors. The general public can visit on Saturday, September 19, and Sunday, September 20, while school groups are invited on Friday, September 18. These events aim to provide a better understanding of how electricity is generated and the infrastructure behind it. Visitors will have the chance to explore various facilities, including the aero-cooling tower at the Belleville-sur-Loire site, the machine room of the newest reactor at Flamanville, and the decommissioning site of the reactors at Chooz. Even the construction site of the future EPR2 reactors at Penly will be accessible. At some locations, such as Chooz, a driving simulator that replicates a nuclear reactor's control room will be available for visitors to experience. In 2025, France produced 547.5 terawatt-hours (TWh) of electricity, which is equivalent to fully charging more than 9 billion Tesla Model 3 batteries. EDF's electricity production in France is nearly carbon-free, with a decarbonization rate of 99%, or 3.6 grams of carbon dioxide per kilowatt-hour. However, when considering EDF's operations globally, including gas plants in other countries, the carbon intensity increases to 26.5 grams of CO2 per kilowatt-hour, which remains one of the lowest in the world. In addition to nuclear power plants, EDF is also opening other large-scale energy production sites, such as wind farms and hydroelectric power plants. Visitors can tour the offshore wind farm in Fécamp, the tidal power plant at La Rance, and the hydroelectric power plant at Pragnères. However, access to these sites is limited and requires advance registration. Visitors must book a month in advance, present a valid ID, be at least 12 years old, and wear appropriate clothing, including pants, long sleeves, and closed shoes. The event is free, but the number of available spots is limited to around 10,000. Registration must be completed through the official platform, visiteredf.fr, and for nuclear power plants, all reservations were expected to be completed by mid-August.