Keywords
alternative, alternative energy, back lit, blue sky, change, clear sky, color image, commitment, conservation, copy space, day, eco-friendly, energy, environmental conservation, environmental issues, environmentalism, europe, european, fuel and power generation, germany, green energy, green technology, low angle view, munchen, nobody, outdoors, photography, power, preservation, renewable energy, responsibility, silhouette, single object, sky, square image, sunbeam, sunny, sustainability, sustainable resources, wind turbine, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, u19657414