Earth Hour 2009

• Although in support of Earth Hour, the "Carbon Sense Coalition" wants Earth Hour to be renamed "Blackout Night", and to be held outside on the shortest and coldest day of the year "...to prepare our population for the dark days ahead".
• Bjørn Lomborg, author of The Skeptical Environmentalist, wrote, "It is vital to make solar and other new technology cheaper than fossil fuels quickly so we can turn off carbon energy sources for a lot longer than one hour and keep the planet running... Fossil fuels literally gave us an enlightenment, by lighting our world and giving us protection from the fury of the elements. It is ironic that today's pure symbolism should hark back to a darker age."
• On March 29, one day after Earth Hour 2009, Dân Trí daily newspaper published an article about the other side of Earth Hour. It was concerned that many young people chose to drive around the darkened cities for fun, exhausting petroleum instead of electricity and resulting in long-time traffic jams.
• During the 2010 Earth Hour in the city of Uusikaupunki in Finland, a 17-year-old female motorcyclist hit a 71-year-old man, who was walking on the street instead of the sidewalk for an unknown reason. The man died from his injuries, while the motorcyclist and her passenger were uninjured. At the time of the accident the street lights had been turned off as part of the Earth Hour. The police stated that the lack of street lighting may have played a part in the accident, while the mayor believed the city's street lights would have been too dim to prevent it.