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    Engineer shutting the door of a wind mill entrance — Stock Photo
    Engineer shutting the door of a wind mill entrance
    Turbines at wind farm near Vredendal, Western Cape, South Africa. — Stock Photo
    Turbines at wind farm near Vredendal, Western Cape, South Africa.
    Male worker working at desk in office — Stock Photo
    Male worker working at desk in office
    Close up of solar panels outdoors — Stock Photo
    Close up of solar panels outdoors
    Smoke coming out of factory chimney against clear sky — Stock Photo
    Smoke coming out of factory chimney against clear sky
    Illuminated oil rig support vessel arriving at port harbor at dusk — Stock Photo
    Illuminated oil rig support vessel arriving at port harbor at dusk
    Engineer connecting energy storage batteries for back up power to an electric power plant — Stock Photo
    Engineer connecting energy storage batteries for back up power to an electric power plant
    Scenic shot of american-style windmill — Stock Photo
    Scenic shot of american-style windmill
    Young male worker climbing scaffolding at solar station — Stock Photo
    Young male worker climbing scaffolding at solar station
    Close-up of switch on machinery — Stock Photo
    Close-up of switch on machinery
    Male worker using digital tablet at desk in office — Stock Photo
    Male worker using digital tablet at desk in office
    Young male worker working at solar station — Stock Photo
    Young male worker working at solar station
    Man in overalls and hard hat at pump jack in open ground at oil extraction site. — Stock Photo
    Man in overalls and hard hat at pump jack in open ground at oil extraction site.
    Scenic view of Battersea Power Station at dusk, London, UK — Stock Photo
    Scenic view of Battersea Power Station at dusk, London, UK
    Solar panels under blue sky in remote landscape — Stock Photo
    Solar panels under blue sky in remote landscape
    Male worker working on windmill in office — Stock Photo
    Male worker working on windmill in office
    Engineers standing at the entrance of wind mill at a wind farm — Stock Photo
    Engineers standing at the entrance of wind mill at a wind farm
    Wind power turbines — Stock Photo
    Wind power turbines
    Scenic view of Solar photovoltaic array — Stock Photo
    Scenic view of Solar photovoltaic array
    Young male worker holding carabiner at solar station — Stock Photo
    Young male worker holding carabiner at solar station
    Pump jack in open ground at oil extraction site. — Stock Photo
    Pump jack in open ground at oil extraction site.
    Wind turbines spinning in rural landscape — Stock Photo
    Wind turbines spinning in rural landscape
    Electrical power lines through a rural landscape at sunset, USA — Stock Photo
    Electrical power lines through a rural landscape at sunset, USA
    Couple walking on dirt road by field — Stock Photo
    Couple walking on dirt road by field
    Oil and natural gas platform — Stock Photo
    Oil and natural gas platform
    Mooserboden dam and reservoir, Kaprun, Zell am See, Salzburg, Austria — Stock Photo
    Mooserboden dam and reservoir, Kaprun, Zell am See, Salzburg, Austria
    Wind power turbines — Stock Photo
    Wind power turbines
    Environmental cleanup engineers in hold of ship cleaning hazardous materials — Stock Photo
    Environmental cleanup engineers in hold of ship cleaning hazardous materials
    Close-up of gas nozzle in fuel tank of a car — Stock Photo
    Close-up of gas nozzle in fuel tank of a car
    External combustion engine igniting — Stock Photo
    External combustion engine igniting
    Scenic view of wind turbine on field — Stock Photo
    Scenic view of wind turbine on field
    The construction of the Hoover Dam — Stock Photo
    The construction of the Hoover Dam
    Engineer taking notes on a writing pad at a wind farm — Stock Photo
    Engineer taking notes on a writing pad at a wind farm
    Silhouette of wind turbine in rural landscape — Stock Photo
    Silhouette of wind turbine in rural landscape
    Engineer in gas turbine electric power plant exhaust gas and condensation process room — Stock Photo
    Engineer in gas turbine electric power plant exhaust gas and condensation process room
    Gas turbine exhaust stack at an Electric cogeneration plant — Stock Photo
    Gas turbine exhaust stack at an Electric cogeneration plant
    Male worker working on solar panel in office — Stock Photo
    Male worker working on solar panel in office
    Scenic view of Wind farm along the Dollard, East Frisia, Lower Saxony, Germany — Stock Photo
    Scenic view of Wind farm along the Dollard, East Frisia, Lower Saxony, Germany
    Mooserboden dam and reservoir, Kaprun, Zell am See, Salzburg, Austria — Stock Photo
    Mooserboden dam and reservoir, Kaprun, Zell am See, Salzburg, Austria
    Reservoir dam in full spate in Wales. — Stock Photo
    Reservoir dam in full spate in Wales.
    Light bulbs against black — Stock Photo
    Light bulbs against black
    Attentive male worker using laptop in office — Stock Photo
    Attentive male worker using laptop in office
    Engineer in electric power plant inspecting condenser piping — Stock Photo
    Engineer in electric power plant inspecting condenser piping
    Pressure gauge connected to pipe — Stock Photo
    Pressure gauge connected to pipe
    Engineer opening the entrance door of wind mill at a wind farm — Stock Photo
    Engineer opening the entrance door of wind mill at a wind farm
    Solar panels at solar station on a sunny day — Stock Photo
    Solar panels at solar station on a sunny day
    Male worker using mobile phone at desk in office — Stock Photo
    Male worker using mobile phone at desk in office
    Engineer using a laptop at entrance of a wind mill at a wind farm — Stock Photo
    Engineer using a laptop at entrance of a wind mill at a wind farm
    Rainbow Over Windmills, Imperial County, California, United States — Stock Photo
    Rainbow Over Windmills, Imperial County, California, United States
    Attentive male worker using digital tablet in office — Stock Photo
    Attentive male worker using digital tablet in office
    Low angle view of power lines under blue sky — Stock Photo
    Low angle view of power lines under blue sky
    Biofuels production in Brazil, Alternative Energy concept — Stock Photo
    Biofuels production in Brazil, Alternative Energy concept
    Male worker working on solar panel at solar station plant — Stock Photo
    Male worker working on solar panel at solar station plant
    Hot water pipe ducting at an electric plant — Stock Photo
    Hot water pipe ducting at an electric plant
    Engineer standing near a wind mill at a wind farm — Stock Photo
    Engineer standing near a wind mill at a wind farm
    Large Solar Panels set up at angle. — Stock Photo
    Large Solar Panels set up at angle.
    Traditional windmill in rural landscape at sunrise, Warwickshire, England, UK — Stock Photo
    Traditional windmill in rural landscape at sunrise, Warwickshire, England, UK
    Aerial view of lake Mooserboden and dam wall, Kaprun High Mountain reservoirs, Salzburg, Austria — Stock Photo
    Aerial view of lake Mooserboden and dam wall, Kaprun High Mountain reservoirs, Salzburg, Austria
    Vise tool on a wooden table at solar station — Stock Photo
    Vise tool on a wooden table at solar station
    Cactus and wind turbines — Stock Photo
    Cactus and wind turbines