Alternative energy Photo Alternative energy FreePhoto Free Download ▾ 3569 x5538 2560 x 3972 1920 x 2979 1280 x 1986 800 x 1241 3569 x5538 2560 x 3972 1920 x 2979 1280 x 1986 800 x 1241 License: Free for personal and commercial use. Not for sale or redistribution. Appreciation not required but appreciated. Facebook Twitter Camera: Canon EOS 70D 16/1 mm f/11.0 1/60 s 100 ISO landscape green blue sky technology wind clouds environmental environment grass hill rotation power electricity invention turbine propeller blade windmill current wind energy wind turbine renewable energy wind power rotor alternative energy sustainability efficiency environmental protection Colors: