3054 results for: energy efficiency

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A worker is installing solar panels on a rooftop, utilizing sunlight to harness clean energy. This

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A worker is installing solar panels on a rooftop, ...

Close-up of two hands holding a small wind turbine model against a vibrant green background,

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Close-up of two hands holding a small wind turbine...

Modern sustainable architecture with vibrantly colored glass portals and wooden elements, featuring

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Modern sustainable architecture with vibrantly col...

A vibrant and eco-friendly interior showcasing a staircase with green tile walls, emphasizing

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A vibrant and eco-friendly interior showcasing a s...

Solar panels cover the facade of a modern urban building, promoting sustainable energy. The

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Solar panels cover the facade of a modern urban bu...

Symbolic image of service charges: Close-up of a symbolic service charge statement

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Symbolic image of service charges: Close-up of a s...

The Lausward combined heat and power plant in Düsseldorf, gas and steam turbine power plant,

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The Lausward combined heat and power plant in Düss...

Winter sports area in the Sauerland, Winterberg ski lift carousel, artificial snow slopes,

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Winter sports area in the Sauerland, Winterberg sk...

Opencast lignite mine Garzweiler 2, excavator 285, bucket wheel excavator, considered to be the

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Opencast lignite mine Garzweiler 2, excavator 285,...

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 si...

In this photo illustration, a smartphone displays the crude oil price in USD on March 09, 2026 in

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In this photo illustration, a smartphone displays ...

The UNIPER Datteln 4 coal-fired power plant, power plant block and cooling tower, cogeneration,

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The UNIPER Datteln 4 coal-fired power plant, power...

War in the Middle East is causing oil prices to rise. Refueling is becoming more expensive. At the

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War in the Middle East is causing oil prices to ri...

Solar park on the Slaperdijk dike near Eemshaven, test project, 17000 solar modules have been

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Solar park on the Slaperdijk dike near Eemshaven, ...

The UNIPER Datteln 4 coal-fired power plant, power plant block and cooling tower, cogeneration,

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The UNIPER Datteln 4 coal-fired power plant, power...

A fuel station attendant refuels vehicles at a petrol pump in Guwahati, India, on March 11, 2026.

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A fuel station attendant refuels vehicles at a pet...

A fuel station attendant refuels a auto rickshaw at a petrol pump in Guwahati, India, on March 11,

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A fuel station attendant refuels a auto rickshaw a...

Iqony district heating pipes at the city port, crosses the Rhine-Herne Canal in Essen, A42 motorway

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Iqony district heating pipes at the city port, cro...

Thermal image or thermography, symbolic photo, interpolated. The photo shows areas of heat loss in

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Thermal image or thermography, symbolic photo, int...

Thermal image or thermography, symbolic photo, interpolated. The photo shows areas of heat loss in

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Thermal image or thermography, symbolic photo, int...

In this photo illustration, a person looks at a smartphone displaying Brent crude oil prices in

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In this photo illustration, a person looks at a sm...

District heating pipeline from UNIPER coal-fired power plant Datteln 4, cogeneration, generation of

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District heating pipeline from UNIPER coal-fired p...

Night storage heating in a room in Düsseldorf, Germany

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

Server with cables, 19.10.2023

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Server with cables, 19.10.2023

Essen, North Rhine-Westphalia, Germany - residential construction in the Ruhr area. New building

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Essen, North Rhine-Westphalia, Germany - residenti...

Scaffolding and solar panels on the roof of a detached house in Essen, energy efficiency classes

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Scaffolding and solar panels on the roof of a deta...

Essen, North Rhine-Westphalia, Germany - Demolition of an office building, demolition of former RWE

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Essen, North Rhine-Westphalia, Germany - Demolitio...

Eine Jablotschkow-Kerze von Pawel Nikolajewitsch Jablotschkow, 1847-1894, einem russischen

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Eine Jablotschkow-Kerze von Pawel Nikolajewitsch J...

2 heat pumps are installed on an apartment block in a front garden, Hilden, Germany

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2 heat pumps are installed on an apartment block i...

Generator von Thomas Alva Edison, 1847-1931, einem amerikanischen Erfinder und Geschäftsmann

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Generator von Thomas Alva Edison, 1847-1931, einem...

Reynier'sche Lampe, von E. Reynier, einem französischen Erfinder

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Reynier'sche Lampe, von E. Reynier, einem französi...

Die Gramme-Maschine, eine Art Gleichstromdynamo, von Zénobe Théophile Gramme, 1826-1901, einem

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Die Gramme-Maschine, eine Art Gleichstromdynamo, v...

A hand delicately points at a miniature wind turbine on a green background, symbolizing sustainable

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A hand delicately points at a miniature wind turbi...

A person in gloves plugs a yellow electric car into a charging station. The scene highlights

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A person in gloves plugs a yellow electric car int...

Energy efficiency classes, core refurbishment of an old villa in Remscheid, Germany

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Energy efficiency classes, core refurbishment of a...

Young heating technician maintains a heating system, service work technician heating Vienna,

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Young heating technician maintains a heating syste...

A vibrant yellow electric car is connected to a charging station via a red cable. The focus is on

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A vibrant yellow electric car is connected to a ch...

Modern sustainable building showcasing vibrant, colorful portals and low-emission materials. The

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Modern sustainable building showcasing vibrant, co...

Two children, seated in the back of an electric car, look out the window, enjoying the scenery. The

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Two children, seated in the back of an electric ca...

Fuel station attendant refuels vehicles at a petrol pump in Guwahati, India, on March 11, 2026. Oil

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Fuel station attendant refuels vehicles at a petro...

A single wind turbine stands on a dry, hilly landscape under a dynamic sky filled with fluffy

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A single wind turbine stands on a dry, hilly lands...

Detached house with various solar modules, in addition to solar panels on the roof of the house,

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Detached house with various solar modules, in addi...

A hand gently holds a miniature white wind turbine against a vibrant green background, symbolizing

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A hand gently holds a miniature white wind turbine...

Evening atmosphere, Cologne Cathedral illuminated with LED lamps and the Hohenzollern Bridge,

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Evening atmosphere, Cologne Cathedral illuminated ...

Evening atmosphere, Cologne Cathedral illuminated with LED lamps and the Hohenzollern Bridge,

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Evening atmosphere, Cologne Cathedral illuminated ...

The UNIPER Datteln 4 coal-fired power plant, power plant block and cooling tower, cogeneration,

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The UNIPER Datteln 4 coal-fired power plant, power...

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...

Gas supplies from Russia only against Russian rubles, energy crisis, embargo, natural gas, Nord

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Gas supplies from Russia only against Russian rubl...

Two heat pumps are elevated on a wall in Wuppertal, Germany

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Two heat pumps are elevated on a wall in Wuppertal...

The Lausward combined heat and power plant in Düsseldorf, gas and steam turbine power plant,

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The Lausward combined heat and power plant in Düss...

The Höegh Esperanza, an LNG storage and vaporisation vessel, is moored at the LNG terminal near

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The Höegh Esperanza, an LNG storage and vaporisati...

Balcony power plant on an apartment block in Monheim am Rhein, Germany

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Balcony power plant on an apartment block in Monhe...

Wind farm near the East Frisian town of Norden, east of the town, sunset, Lower Saxony, Germany

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Wind farm near the East Frisian town of Norden, ea...

Energy efficiency classes, core refurbishment of an old villa in Remscheid, Germany

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Energy efficiency classes, core refurbishment of a...

Two solar panels on a balcony in a backyard in Wuppertal, Germany

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Two solar panels on a balcony in a backyard in Wup...

Featuring a modern interior with vibrant blue tiles, this image highlights sustainable

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Featuring a modern interior with vibrant blue tile...

Solar panels on a house wall in Hilden, Germany

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Solar panels on a house wall in Hilden, Germany

Heat pump on a new single-family house, graphics with energy efficiency classes according to the

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Heat pump on a new single-family house, graphics w...

Renovation of a detached house with insulation of the façade with polystyrene panels in Hilden,

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Renovation of a detached house with insulation of ...

Thermal image or thermography, symbolic photo, interpolated. The photo shows areas of heat loss in

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Thermal image or thermography, symbolic photo, int...

Close-up of an electric car charging with a vivid red cable at a station. The yellow vehicle's

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Close-up of an electric car charging with a vivid ...

A spacious corridor featuring large, energy-efficient windows, with a minimalist interior,

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A spacious corridor featuring large, energy-effici...

Winter sports area in the Sauerland, Winterberg ski lift carousel, artificial snow pistes,

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Winter sports area in the Sauerland, Winterberg sk...

Power line, overhead line, power line, silhouette, sunset, Federal Republic of Germany

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Power line, overhead line, power line, silhouette,...

Wind farm on the Slaperdijk dike near Eemshaven, on which dikes are, as a test project, 17000 solar

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Wind farm on the Slaperdijk dike near Eemshaven, o...

Pipeline bridge at UNIPER coal-fired power plant Datteln 4, power plant block, cogeneration of

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Pipeline bridge at UNIPER coal-fired power plant D...

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 si...

The UNIPER Datteln 4 coal-fired power plant, power plant block and cooling tower, cogeneration,

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The UNIPER Datteln 4 coal-fired power plant, power...

Contemporary open balcony showcasing panoramic natural vistas, modern architectural elements, and

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Contemporary open balcony showcasing panoramic nat...

Equestrian statue of Kaiser Wilhelm I on Norbert-Burger Platz, with Cologne Cathedral and the

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Equestrian statue of Kaiser Wilhelm I on Norbert-B...

Three heat pumps as a cascade behind a privacy screen in Remscheid, Germany

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Three heat pumps as a cascade behind a privacy scr...

Cologne Cathedral and the Hohenzollern Bridge illuminated with LED lights, Cologne, North

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Cologne Cathedral and the Hohenzollern Bridge illu...

The UNIPER Datteln 4 coal-fired power plant, power plant block and cooling tower, cogeneration,

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The UNIPER Datteln 4 coal-fired power plant, power...

The Lausward combined heat and power plant in Düsseldorf, gas and steam turbine power plant,

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The Lausward combined heat and power plant in Düss...

De Groene Kaap residential complex, in the Rotterdam Feijenoord district, on the Maashaven,

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De Groene Kaap residential complex, in the Rotterd...

Thermal image or thermography, symbolic photo, interpolated. The photo shows areas of heat loss in

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Thermal image or thermography, symbolic photo, int...

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...

The Lausward combined heat and power plant in Düsseldorf, gas and steam turbine power plant,

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The Lausward combined heat and power plant in Düss...

Winter sports area in the Sauerland, Winterberg ski lift carousel, artificial snow slopes,

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Winter sports area in the Sauerland, Winterberg sk...

Winter sports area in the Sauerland, Winterberg ski lift carousel, artificial snow slopes,

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Winter sports area in the Sauerland, Winterberg sk...

The UNIPER Datteln 4 coal-fired power plant, power plant block and cooling tower, cogeneration,

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The UNIPER Datteln 4 coal-fired power plant, power...

New-build neighbourhood, around 140 detached and semi-detached houses being built in the south of

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New-build neighbourhood, around 140 detached and s...

District heating pipeline from UNIPER coal-fired power plant Datteln 4, cogeneration, generation of

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District heating pipeline from UNIPER coal-fired p...

District heating pipeline from UNIPER coal-fired power plant Datteln 4, cogeneration, generation of

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District heating pipeline from UNIPER coal-fired p...

(photo montage) Road sign with information about driving bans and a gas station road sign vacant

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(photo montage) Road sign with information about d...

Dinslaken, North Rhine-Westphalia, Germany - Emscher-Eündung sewage treatment plant. The

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Dinslaken, North Rhine-Westphalia, Germany - Emsch...

Dynamo by Hippolyte Pixii, 1808-1835, an instrument maker from Paris, France

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Dynamo by Hippolyte Pixii, 1808-1835, an instrumen...

2 heat pumps are installed on an apartment block in a front garden, Hilden, Germany

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2 heat pumps are installed on an apartment block i...

The façade of an apartment building is being energetically renovated with mineral wool insulation

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The façade of an apartment building is being energ...

Dinslaken, North Rhine-Westphalia, Germany - Combined heat and power plants (CHP) generate

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Dinslaken, North Rhine-Westphalia, Germany - Combi...

Heat pump behind a fence in Hilden, Germany

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Heat pump behind a fence in Hilden, Germany

Gas flame with 1 euro coin, gas embargo, gas embargo, energy prices, inflation rate, gas price,

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Gas flame with 1 euro coin, gas embargo, gas embar...

Balconies with privacy screens and colourful flower boxes on a house with grey clinker brick in

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Balconies with privacy screens and colourful flowe...

Two hands hold a miniature wind turbine, symbolizing collaboration in sustainable energy. The

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Two hands hold a miniature wind turbine, symbolizi...

Two solar panels on the façade of an apartment block in Hilden, Germany

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Two solar panels on the façade of an apartment blo...

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...

This image showcases a contemporary apartment building with vibrant balconies and sustainable

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This image showcases a contemporary apartment buil...

Close-up of an electric car in a vibrant yellow finish while charging. The plugged-in cable

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Close-up of an electric car in a vibrant yellow fi...

A black heat pump with efficiency classes according to the GEG in a front garden in Langenfeld,

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A black heat pump with efficiency classes accordin...

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