Earth Hour 2025 Theme. Download our twinkl earth hour resources. Join us again next year for earth hour 2025 on saturday, the 22nd of march at 8:30 pm your local time as we create the biggest hour for earth.

For 2025, our 55th anniversary year, we are focused on supporting the tripling of renewable energy by 2030 with our theme our power, our planet, which is championing solar, wind, hydroelectric, geothermal, and tidal generated energy. Earth hour is a global event organized by wwf.