2620 results for: efficiency

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Solar panels on the roof of a house, energy efficiency classes according to the GEG, Hilden,

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Solar panels on the roof of a house, energy effici...

15/09/2023, Berlin, Germany, Europe, German climate protection activist Luisa Neubauer during her

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15/09/2023, Berlin, Germany, Europe, German climat...

Power bank loads tablet PC, smartphone, isolated on wooden background. charging concept. free

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Power bank loads tablet PC, smartphone, isolated o...

Map of industry, German Empire, 1894, Karte der Industrie, Bergwerke und Hütten im Deutschen Reich,

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Map of industry, German Empire, 1894, Karte der In...

High-voltage pylon, electricity prices

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High-voltage pylon, electricity prices

Zip fastener 115

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Zip fastener 115

Time For Growth Concept

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Time For Growth Concept

Darkening

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Darkening

Solar system, an inverter displays the current solar power yield

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Solar system, an inverter displays the current sol...

Evening atmosphere at Cologne Cathedral, Hohenzollern Bridge, Cologne, North Rhine-Westphalia,

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Evening atmosphere at Cologne Cathedral, Hohenzoll...

Focus On Quality Concept

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Focus On Quality Concept

A man wearing protective breathing equipment is viewed closeup, inspecting signs of mold and mildew

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A man wearing protective breathing equipment is vi...

Time For Growth Concept

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Time For Growth Concept

The Customer Is Always Right Concept

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The Customer Is Always Right Concept

Several innovative wind turbines of different sizes on a barren field behind an old tree in the

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Several innovative wind turbines of different size...

Cologne Cathedral in the evening with Hohenzollern Bridge, railway bridge over the Rhine. Sunset on

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Cologne Cathedral in the evening with Hohenzollern...

A business man holding a paper in front of his face with a strategy

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A business man holding a paper in front of his fac...

An indoor environmental quality assessor is viewed up-close, working beneath timber floor joists

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An indoor environmental quality assessor is viewed...

Green power plugon a keyboard isolated on white background

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Green power plugon a keyboard isolated on white ba...

Solarpark, Luftbild

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Solarpark, Luftbild

Balcony power station on a house in Düsseldorf, Germany

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Balcony power station on a house in Düsseldorf, Ge...

Symbolic image on the topic of price brakes, electricity price brakes, gas brakes, price caps

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Symbolic image on the topic of price brakes, elect...

Energy efficiency classes, heat pumps on the garage roof of a detached house in Hilden, Germany,

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Energy efficiency classes, heat pumps on the garag...

Get More Done Concept

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Get More Done Concept

Light source

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Light source

3D Isometric Flat Illustration of Value Proposition Banner, Display For Enhanced Communication And

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3D Isometric Flat Illustration of Value Propositio...

A residential building is being renovated. Insulation for energy saving and thermal insulation, A

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A residential building is being renovated. Insulat...

Symbolic image of heat pumps instead of oil and gas heating systems

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Symbolic image of heat pumps instead of oil and ga...

Get More Done Concept

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Get More Done Concept

A photo of pawns standing in front of a chess set of the same colour

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A photo of pawns standing in front of a chess set ...

An electricity meter measures the electricity consumed. Symbol photo for electricity price and

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An electricity meter measures the electricity cons...

A sleek kitchen showcases a contemporary sink with a black finish, set against a light speckled

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A sleek kitchen showcases a contemporary sink with...

Energy counselling

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Energy counselling

An electricity meter measures the electricity consumed. Symbol photo for electricity price and

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An electricity meter measures the electricity cons...

Symbolic image, stamp with the inscription: electricity costs, a green power cable, studio

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Symbolic image, stamp with the inscription: electr...

Woman pouring water into a cup in a bright kitchen with kettle, energy-saving, environmentally

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Woman pouring water into a cup in a bright kitchen...

High-voltage pylon, electricity prices

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High-voltage pylon, electricity prices

Glühbirnenmodelle von Edison, Maxim, Swan und Werdermann, 19. Jahrhundert

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Glühbirnenmodelle von Edison, Maxim, Swan und Werd...

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Ledvance logo is displayed on smartphone. Ledvance...

Green power plugon a keyboard isolated on white background

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Green power plugon a keyboard isolated on white ba...

Exhausted businessman looking at hourglass feel bored and overwhelmed. Tired male employee look at

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Exhausted businessman looking at hourglass feel bo...

Work Less Play More Concept

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Work Less Play More Concept

I Love Music Concept

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I Love Music Concept

A close up view of an environmental quality inspector wearing respirator, pointing towards

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A close up view of an environmental quality inspec...

What Are Your Goals Concept

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What Are Your Goals Concept

Gas meter and piping. Shooting Location: Toronto

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Gas meter and piping. Shooting Location: Toronto

The Customer Is Always Right Concept

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The Customer Is Always Right Concept

An infrared image of the Forchensee in Bavaria Germany

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An infrared image of the Forchensee in Bavaria Ger...

Symbolic image on the topic of Germany's impending deindustrialisation

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Symbolic image on the topic of Germany's impending...

Close up honeycombs. Many bees on honeycomb

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Close up honeycombs. Many bees on honeycomb

Maintenance team examining aircraft wing in hangar, ensuring flight safety and operational

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Maintenance team examining aircraft wing in hangar...

Customer Is The King Concept

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Customer Is The King Concept

Cultivation of lettuce and cabbage in a greenhouse in the netherlands

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Cultivation of lettuce and cabbage in a greenhouse...

Lettuce ready to harvest in a commercial greenhouse in the netherlands

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Lettuce ready to harvest in a commercial greenhous...

Night storage heating in a room in Düsseldorf, Germany, Europe

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Night storage heating in a room in Düsseldorf, Ger...

Norden, Lower Saxony, Germany - Wind turbines, wind farm near Norden in East Frisia. In front a

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Norden, Lower Saxony, Germany - Wind turbines, win...

Symbolic photo of energy costs, heating valve and euro notes, studio

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Symbolic photo of energy costs, heating valve and ...

15.01.2024, Berlin, Germany, Europe, Several thousand farmers, tradespeople, freight forwarders and

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15.01.2024, Berlin, Germany, Europe, Several thous...

Berlin, Germany - 5 April 2025: Demonstrators protest against the policies of US President Donald

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Berlin, Germany - 5 April 2025: Demonstrators prot...

High-voltage pylon, electricity prices

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High-voltage pylon, electricity prices

The photo shows a piece of lawn with a green power cable

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The photo shows a piece of lawn with a green power...

Woman in the kitchen lifts the lid off a pot with a lid, energy saving, environmentally friendly

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Woman in the kitchen lifts the lid off a pot with ...

Chimney of the UNIPER coal-fired power plant Maasvlakte, in the harbour of Rotterdam, Netherlands

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Chimney of the UNIPER coal-fired power plant Maasv...

Yellow sign High voltage Danger to life

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Yellow sign High voltage Danger to life

Cologne Cathedral, illuminated in the evening. Hohenzollern Bridge, railway bridge over the Rhine.

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Cologne Cathedral, illuminated in the evening. Hoh...

Energy efficiency classes, two solar panels on the façade of an apartment block in Hilden, Germany,

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Energy efficiency classes, two solar panels on the...

Symbolic image on the subject of rising energy costs

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Symbolic image on the subject of rising energy cos...

Saxony's Economics and Energy Minister Dirk Panter visits Saxony's largest battery storage

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Saxony's Economics and Energy Minister Dirk Panter...

Research vessel Nova, on the Rhine, in the inland port of Ruhrort in Duisburg, 15 metre catamaran,

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Research vessel Nova, on the Rhine, in the inland ...

Balcony power station on a detached house in Monheim am Rhein, Germany, Europe

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Balcony power station on a detached house in Monhe...

Wind energy park on a field in Germany

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Wind energy park on a field in Germany

Cologne Cathedral, illuminated in the evening. Hohenzollern Bridge, railway bridge over the Rhine.

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Cologne Cathedral, illuminated in the evening. Hoh...

The Telefonica headquarters in the 22 district of Barcelona, energy efficiency classes according to

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The Telefonica headquarters in the 22 district of ...

High-voltage pylon, electricity costs, power failure, power grid

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High-voltage pylon, electricity costs, power failu...

Power bank loads tablet PC, smartphone, isolated on wooden background. charging concept. free

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Power bank loads tablet PC, smartphone, isolated o...

14.06.2017, Berlin, Germany, Europe, Black underground cables for the power supply are wound onto

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14.06.2017, Berlin, Germany, Europe, Black undergr...

High-voltage pylon, electricity costs, power failure, power grid

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High-voltage pylon, electricity costs, power failu...

15/09/2023, Berlin, Germany, Europe, German climate protection activist Luisa Neubauer during her

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15/09/2023, Berlin, Germany, Europe, German climat...

Wind turbines and electricity pylons in Bergedorf, Hamburg, Germany, photomontage, Europe

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Wind turbines and electricity pylons in Bergedorf,...

Elektrische Kohlebogenlampe, 1879, von Ernst Werner von Siemens, 1816 - 1892, einem deutschen

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Elektrische Kohlebogenlampe, 1879, von Ernst Werne...

Germany's largest floating solar power plant on the Silbersee III, a quarry pond no longer used for

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Germany's largest floating solar power plant on th...

Cologne Cathedral, illuminated in the evening. Hohenzollern Bridge, railway bridge over the Rhine.

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Cologne Cathedral, illuminated in the evening. Hoh...

Installation of solar modules on the roof of a barn on a farm, over 210 photovoltaic modules are

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Installation of solar modules on the roof of a bar...

Installation of solar modules on the roof of a barn on a farm, over 210 photovoltaic modules are

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Installation of solar modules on the roof of a bar...

Shower, fitting, temperature control, temperature control of the shower water

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Shower, fitting, temperature control, temperature ...

I Love Music Concept

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I Love Music Concept

Duplicate Success Concept

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Duplicate Success Concept

Saxony's Economics and Energy Minister Dirk Panter visits Saxony's largest battery storage

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Saxony's Economics and Energy Minister Dirk Panter...

Cologne Cathedral, has been shining in new light since Easter 2025, the old metal halide lamps have

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Cologne Cathedral, has been shining in new light s...

Cologne Cathedral, has been shining in new light since Easter 2025, the old metal halide lamps have

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Cologne Cathedral, has been shining in new light s...

Cologne Cathedral, has been shining in new light since Easter 2025, the old metal halide lamps have

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Cologne Cathedral, has been shining in new light s...

Installation of solar modules on the roof of a commercial enterprise, over 400 photovoltaic modules

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Installation of solar modules on the roof of a com...

Installation of solar modules on the roof of a barn on a farm, over 210 photovoltaic modules are

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Installation of solar modules on the roof of a bar...

Galeria Kaufhof department stores' in the city centre of Duisburg, on Düsseldorfer Straße, is

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Galeria Kaufhof department stores' in the city cen...

LED lights, evening mood at Cologne Cathedral, Hohenzollern Bridge, Cologne, North

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LED lights, evening mood at Cologne Cathedral, Hoh...

Cologne Cathedral, has been shining in new light since Easter 2025, the old metal halide lamps have

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Cologne Cathedral, has been shining in new light s...

Energy efficiency concept with gas cooker – the cost of natural gas is more expensive. Close up,

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Energy efficiency concept with gas cooker – the co...

A close up view on the arm of a professional home inspector with copy space, checking for moisture

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A close up view on the arm of a professional home ...

Meter cabinet with bidirectional meter and Ferraris meter in Düsseldorf, Germany, Europe

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Meter cabinet with bidirectional meter and Ferrari...

Cologne Cathedral, illuminated in the evening. Hohenzollern Bridge, railway bridge over the Rhine.

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Cologne Cathedral, illuminated in the evening. Hoh...

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