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AERIAL VIEW OF SOLAR PANELS ON TOP OF A COAL ASH PYRAMID IN EAST-CENTRAL EUROPE. AFTER COAL IS BURNED IN POWER PLANTS, THE WASTE ASH IS STACKED AND COMPACTED INTO LARGE PYRAMIDS, WHICH MAY EVENTUALLY BE COVERED OVER WITH SOLAR PANELS, TREES OR EVEN GRAPE

Aerial view of solar panels on top of a coal ash pyramid in East-Central Europe. After coal is burned in power plants, the waste ash is stacked and compacted into large pyramids, which may eventually be covered over with solar panels, trees or even grape plantations. The pyramids are used as landfill to prevent the release of ash into the atmosphere, but they also contaminate the environment with toxic pollutants harmful to human health.. (KEYSTONE/NATURE PICTURE LIBRARY/MILAN RADISICS)

SOLAR PANELS ON THE ROOF OF A FARMHOUSE FRANCE - SOLAR FARM EQUIPPED WITH 5900 SQUARE METERS OF SOLAR PANELS - VILLARD LE SEC -

Solar panels on the roof of a farmhouse France - Solar farm equipped with 5900 square meters of solar panels - Villard le sec -. Panneaux solaires sur le toit d'une ferme France - Ferme solaire équipée de 5900 mètres carrés de panneaux solaires - Villard le sec -. (KEYSTONE/BIOSPHOTO// Dominique Delfino)

ROOF OF A FARM COVERED WITH SOLAR PANELS FRANCE - SOLAR FARM EQUIPPED WITH 5900 SQUARE METERS OF SOLAR PANELS - VILLARD LE SEC -

Roof of a farm covered with solar panels France - Solar farm equipped with 5900 square meters of solar panels - Villard le sec -. Toit d'une ferme couverte de panneaux solaires France - Ferme solaire équipée de 5900 mètres carrés de panneaux solaires - Villard le sec -. (KEYSTONE/BIOSPHOTO/Dominique Delfino)

ROOF OF A FARM COVERED WITH SOLAR PANELS FRANCE - SOLAR FARM EQUIPPED WITH 5900 SQUARE METERS OF SOLAR PANELS - VILLARD LE SEC -

Roof of a farm covered with solar panels France - Solar farm equipped with 5900 square meters of solar panels - Villard le sec -. Toit d'une ferme couverte de panneaux solaires France - Ferme solaire équipée de 5900 mètres carrés de panneaux solaires - Villard le sec -. (KEYSTONE/BIOSPHOTO// Dominique Delfino)

BALES OF STRAW IN FARM COVERED WITH SOLAR PANELS FRANCE - SOLAR FARM EQUIPPED WITH 5900 SQUARE METERS OF SOLAR PANELS - VILLARD LE SEC -

Bales of straw in farm covered with solar panels France - Solar farm equipped with 5900 square meters of solar panels - Villard le sec -. Rouleaux de paille dans Ferme couverte de panneaux solaires - Ferme solaire équipée de 5900 mètres carrés de panneaux solaires - Villard le sec -. (KEYSTONE/BIOSPHOTO// Dominique Delfino)

AGRICULTURAL MACHINERY IN FARM COVERED WITH SOLAR PANELS - SOLAR FARM EQUIPPED WITH 5900 SQUARE METERS OF SOLAR PANELS - VILLARD LE SEC -

Agricultural machinery in farm covered with solar panels - Solar farm equipped with 5900 square meters of solar panels - Villard le sec -. Tracteurs dans une ferme couverte de panneaux solaires - Ferme solaire équipée de 5900 mètres carrés de panneaux solaires - Villard le sec -. (KEYSTONE/BIOSPHOTO// Dominique Delfino)

FARM COVERED WITH SOLAR PANELS FRANCHE COMTE FRANCE - SOLAR FARM EQUIPPED WITH 5900 SQUARE METERS OF SOLAR PANELS - VILLARD LE SEC -

Farm covered with solar panels Franche Comte France - Solar farm equipped with 5900 square meters of solar panels - Villard le sec -. Ferme couverte de panneaux solaires Franche Comté France - Ferme solaire équipée de 5900 mètres carrés de panneaux solaires - Villard le sec -. (KEYSTONE/BIOSPHOTO/Dominique Delfino)

HOT WATER SOLAR PANELS - THESE SOLAR PANELS CAN GET HOT WATER ALMOST FOR THE WHOLE YEAR, AT LEAST 11 MONTHS FROM 12 IN THE SOUTH OF FRANCE. SURFACE 4 SQ. M., WITH A RESERVE OF 300 LITRES THAT ALLOW HOT WATER AUTONOMY DURING TWO DAYS AT LEAST. - -

Hot water solar panels - These solar panels can get hot water almost for the whole year, at least 11 months from 12 in the south of France. Surface 4 sq. m., with a reserve of 300 litres that allow hot water autonomy during two days at least.-. Capteurs solaires pour l'eau chaude d'une maison - Ces deux capteurs solaires permettent d'obtenir de l'eau chaude quasiment pour toute l'année, au moins 11 mois sur 12 dans le sud de la France. Surface 2 x 2 m² soit 4 m², avec une réserve de 300 litres qui permettent une autonomie de deux jours minimum d'eau chaude.-. (KEYSTONE/BIOSPHOTO// Jean Lecomte)

HOT WATER SOLAR PANELS - THESE SOLAR PANELS CAN GET HOT WATER ALMOST FOR THE WHOLE YEAR, AT LEAST 11 MONTHS FROM 12 IN THE SOUTH OF FRANCE. SURFACE 4 SQ. M., WITH A RESERVE OF 300 LITRES THAT ALLOW HOT WATER AUTONOMY DURING TWO DAYS AT LEAST. - -

Hot water solar panels - These solar panels can get hot water almost for the whole year, at least 11 months from 12 in the south of France. Surface 4 sq. m., with a reserve of 300 litres that allow hot water autonomy during two days at least.-. Capteurs solaires pour l'eau chaude d'une maison - Ces deux capteurs solaires permettent d'obtenir de l'eau chaude quasiment pour toute l'année, au moins 11 mois sur 12 dans le sud de la France. Surface 2 x 2 m² soit 4 m², avec une réserve de 300 litres qui permettent une autonomie de deux jours minimum d'eau chaude.-. (KEYSTONE/BIOSPHOTO// Jean Lecomte)

SOLAR PANELS BEING INSTALLED ON ROOF

Editorial use only .Solar panels being installed on the roof of a domestic house in Fish Hoek, Cape Town, South Africa. South Africa has been facing regular power cuts which has led to a surge in domestic installations of solar power. As a result, the country is now one of the top 10 importers of solar panels in the world. Additionally, South Africa has the second-highest solar radiation potential globally. (KEYSTONE/SCIENCE PHOTO LIBRARY/DR NEIL OVERY)

SOLAR PANELS BEING INSTALLED ON ROOF

Editorial use only .Solar panels being installed on the roof of a domestic house in Fish Hoek, Cape Town, South Africa. South Africa has been facing regular power cuts which has led to a surge in domestic installations of solar power. As a result, the country is now one of the top 10 importers of solar panels in the world. Additionally, South Africa has the second-highest solar radiation potential globally. (KEYSTONE/SCIENCE PHOTO LIBRARY/DR NEIL OVERY)

SOLAR PANELS BEING INSTALLED ON ROOF

Editorial use only .Solar panels being installed on the roof of a domestic house in Fish Hoek, Cape Town, South Africa. South Africa has been facing regular power cuts which has led to a surge in domestic installations of solar power. As a result, the country is now one of the top 10 importers of solar panels in the world. Additionally, South Africa has the second-highest solar radiation potential globally. (KEYSTONE/SCIENCE PHOTO LIBRARY/DR NEIL OVERY)

SOLAR PANELS ON A BALCONY OF A HOUSE FROM THE SEVENTIES, DUESSELDORF, GERMANY

Solarpanele an einem Balkon eines Hauses aus den siebziger Jahren, Duesseldorf, Deutschland Solar panels on a balcony of a house from the seventies, Duesseldorf, Germany (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS ON A BALCONY OF A HOUSE FROM THE SEVENTIES, DUESSELDORF, GERMANY

Solarpanele an einem Balkon eines Hauses aus den siebziger Jahren, Duesseldorf, Deutschland Solar panels on a balcony of a house from the seventies, Duesseldorf, Germany (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS ON A BALCONY OF A HOUSE FROM THE SEVENTIES, DUESSELDORF, GERMANY

Solarpanele an einem Balkon eines Hauses aus den siebziger Jahren, Duesseldorf, Deutschland Solar panels on a balcony of a house from the seventies, Duesseldorf, Germany (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS ON A BALCONY OF A HOUSE FROM THE SEVENTIES, DUESSELDORF, GERMANY

Solarpanele an einem Balkon eines Hauses aus den siebziger Jahren, Duesseldorf, Deutschland Solar panels on a balcony of a house from the seventies, Duesseldorf, Germany (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS ON A BALCONY OF A HOUSE FROM THE SEVENTIES, DUESSELDORF, GERMANY

Solarpanele an einem Balkon eines Hauses aus den siebziger Jahren, Duesseldorf, Deutschland Solar panels on a balcony of a house from the seventies, Duesseldorf, Germany (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS ON A BALCONY OF A HOUSE FROM THE SEVENTIES, DUESSELDORF, GERMANY

Solarpanele an einem Balkon eines Hauses aus den siebziger Jahren, Duesseldorf, Deutschland Solar panels on a balcony of a house from the seventies, Duesseldorf, Germany (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS ON A BALCONY OF A HOUSE FROM THE SEVENTIES, DUESSELDORF, GERMANY

Solarpanele an einem Balkon eines Hauses aus den siebziger Jahren, Duesseldorf, Deutschland Solar panels on a balcony of a house from the seventies, Duesseldorf, Germany (KEYSTONE/imageBROKER/ROBERT POORTEN)

AERIAL VIEW OF LIGHTHOUSE FARO PUNTA DE JANDIA ON SOUTHERN TIP OF JANDIA PENINSULA, ON FLAT ROOF SOLAR PANELS FOR ALTERNATIVE POWER GENERATION ENERGY PRODUCTION BY SOLAR ENERGY, FUERTEVENTURA, CANARY ISLANDS, CANARY ISLANDS, SPAIN

Luftaufnahme Luftbild von Leuchtturm Faro Punta de Jandia an suedliche Spitze von Halbinsel Jandia, auf Flachdach Solarmodule fuer alternative Stromerzeugung Energiegewinnung durch Sonnenenergie, Fuerteventura, Kanarische Inseln, Kanaren, Spanien Aerial view of lighthouse Faro Punta de Jandia on southern tip of Jandia peninsula, on flat roof solar panels for alternative power generation energy production by solar energy, Fuerteventura, Canary Islands, Canary Islands, Spain (KEYSTONE/imageBROKER/FRANK SCHNEIDER)

BALCONY POWER PLANT MADE OF SOLAR PANELS ON A HOUSE IN DUESSELDORF

Balkonkraftwerk aus Solarpanelen an einem Haus in Duesseldorf Balcony power plant made of solar panels on a house in Duesseldorf (KEYSTONE/imageBROKER/ROBERT POORTEN)

BALCONY POWER PLANT MADE OF SOLAR PANELS ON A HOUSE IN DUESSELDORF

Balkonkraftwerk aus Solarpanelen an einem Haus in Duesseldorf Balcony power plant made of solar panels on a house in Duesseldorf (KEYSTONE/imageBROKER/ROBERT POORTEN)

BALCONY POWER PLANT MADE OF SOLAR PANELS ON A HOUSE IN DUESSELDORF

Balkonkraftwerk aus Solarpanelen an einem Haus in Duesseldorf Balcony power plant made of solar panels on a house in Duesseldorf (KEYSTONE/imageBROKER/ROBERT POORTEN)

BALCONY POWER PLANT MADE OF SOLAR PANELS ON A HOUSE IN DUESSELDORF

Balkonkraftwerk aus Solarpanelen an einem Haus in Duesseldorf Balcony power plant made of solar panels on a house in Duesseldorf (KEYSTONE/imageBROKER/ROBERT POORTEN)

BALCONY POWER PLANT MADE OF SOLAR PANELS ON A HOUSE IN DUESSELDORF

Balkonkraftwerk aus Solarpanelen an einem Haus in Duesseldorf Balcony power plant made of solar panels on a house in Duesseldorf (KEYSTONE/imageBROKER/ROBERT POORTEN)

BALCONY POWER PLANT MADE OF SOLAR PANELS ON A HOUSE IN DUESSELDORF

Balkonkraftwerk aus Solarpanelen an einem Haus in Duesseldorf Balcony power plant made of solar panels on a house in Duesseldorf (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS AS A GARDEN FENCE AND PRIVACY SCREEN OF A HOUSE ON A STREET IN LANGENFELD

Solarpanele als Gartenzaun und Sichtschutz eines Hauses an einer Straße in Langenfeld Solar panels as a garden fence and privacy screen of a house on a street in Langenfeld (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS AS A GARDEN FENCE AND PRIVACY SCREEN OF A HOUSE ON A STREET IN LANGENFELD

Solarpanele als Gartenzaun und Sichtschutz eines Hauses an einer Straße in Langenfeld Solar panels as a garden fence and privacy screen of a house on a street in Langenfeld (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS AS A GARDEN FENCE AND PRIVACY SCREEN OF A HOUSE ON A STREET IN LANGENFELD

Solarpanele als Gartenzaun und Sichtschutz eines Hauses an einer Straße in Langenfeld Solar panels as a garden fence and privacy screen of a house on a street in Langenfeld (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS AS A GARDEN FENCE AND PRIVACY SCREEN OF A HOUSE ON A STREET IN LANGENFELD

Solarpanele als Gartenzaun und Sichtschutz eines Hauses an einer Straße in Langenfeld Solar panels as a garden fence and privacy screen of a house on a street in Langenfeld (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS AS A GARDEN FENCE AND PRIVACY SCREEN OF A HOUSE ON A STREET IN LANGENFELD

Solarpanele als Gartenzaun und Sichtschutz eines Hauses an einer Straße in Langenfeld Solar panels as a garden fence and privacy screen of a house on a street in Langenfeld (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS AS A GARDEN FENCE AND PRIVACY SCREEN OF A HOUSE ON A STREET IN LANGENFELD

Solarpanele als Gartenzaun und Sichtschutz eines Hauses an einer Straße in Langenfeld Solar panels as a garden fence and privacy screen of a house on a street in Langenfeld (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS AS A GARDEN FENCE AND PRIVACY SCREEN OF A HOUSE ON A STREET IN LANGENFELD

Solarpanele als Gartenzaun und Sichtschutz eines Hauses an einer Straße in Langenfeld Solar panels as a garden fence and privacy screen of a house on a street in Langenfeld (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS AS A GARDEN FENCE AND PRIVACY SCREEN OF A HOUSE ON A STREET IN LANGENFELD

Solarpanele als Gartenzaun und Sichtschutz eines Hauses an einer Straße in Langenfeld Solar panels as a garden fence and privacy screen of a house on a street in Langenfeld (KEYSTONE/imageBROKER/ROBERT POORTEN)

SOLAR PANELS AT THE END OF THE RUNWAY AT THE ARTURO MERINO BENÍTEZ INTERNATIONAL AIRPORT, SANTIAGO, CHILE.

Solar panels at the end of the runway at the Arturo Merino Benítez International Airport, Santiago, Chile. (KEYSTONE/VWPICS/Jon G. Fuller )

SOLAR PANELS AT THE END OF THE RUNWAY AT THE ARTURO MERINO BENÍTEZ INTERNATIONAL AIRPORT, SANTIAGO, CHILE.

Solar panels at the end of the runway at the Arturo Merino Benítez International Airport, Santiago, Chile. (KEYSTONE/VWPICS/Jon G. Fuller )

SOLAR PANELS ON THE GROUNDS OF THE FORTALEZA DE SAGRES FORTRESS, PONTA DA SAGRES, FARO DISTRICT, ALGARVE, PORTUGAL

Solarpanele auf dem Gelaende der Festung Fortaleza de Sagres, Ponta da Sagres, Faro-Distrikt, Algarve, Portugal Solar panels on the grounds of the Fortaleza de Sagres fortress, Ponta da Sagres, Faro district, Algarve, Portugal (KEYSTONE/imageBROKER/CHRISTOPHER TAMCKE)

SOLAR PANELS ON THE GROUNDS OF THE FORTALEZA DE SAGRES FORTRESS, PONTA DA SAGRES, FARO DISTRICT, ALGARVE, PORTUGAL

Solarpanele auf dem Gelaende der Festung Fortaleza de Sagres, Ponta da Sagres, Faro-Distrikt, Algarve, Portugal Solar panels on the grounds of the Fortaleza de Sagres fortress, Ponta da Sagres, Faro district, Algarve, Portugal (KEYSTONE/imageBROKER/CHRISTOPHER TAMCKE)

STREET LAMP WITH SOLAR PANELS AND SMALL WIND TURBINE, ENERGIEWENDE, BAD HARZBURG, HARZ MOUNTAINS, LOWER SAXONY, GERMANY

Strassenlampe mit Solarpaneelen und kleinem Windrad, Energiewende, Bad Harzburg, Harz, Niedersachsen, Deutschland Street lamp with solar panels and small wind turbine, Energiewende, Bad Harzburg, Harz Mountains, Lower Saxony, Germany (KEYSTONE/imageBROKER/WILFRIED WIRTH)

SOLAR PANELS, HALF-TIMBERED HOUSE, FRONT GARDEN, HOUSE FACADE, VILLAGE VIEW, RUEGHEIM, HOFHEIM, FRANCONIA, BAVARIA, GERMANY,

Solarpanele, Fachwerkhaus, Vorgarten, Hausfassade, Ortsansicht, Ruegheim, Hofheim, Franken, Bayern, Deutschland, Solar panels, half-timbered house, front garden, house facade, village view, Ruegheim, Hofheim, Franconia, Bavaria, Germany (KEYSTONE/mauritius images/KLAUS NEUNER)

SOLAR PANELS ON ROOF OF ST PAUL’S CHURCH, POOLEY BRIDGE, ULLSWATER, LAKE DISTRICT, CUMBRIA, ENGLAND

Solar panels on roof of St Paul's Church, Pooley Bridge, Ullswater, Lake District, Cumbria, England (KEYSTONE/VWPICS/Mel Longhurst)

SOLAR PANELS ALIGNED ON A FARM

Solar panels aligned on a farm (KEYSTONE/VWPICS/Edwin Remsberg)

MODERNIZATION IN GERMAN AGRICULTURE: FARM BUILDINGS WITH MOUNTED SOLAR PANELS

Modernization in German agriculture: Farm buildings with mounted solar panels (KEYSTONE/mauritius images/NEVIO)

SOLAR PANELS ALIGNED ON A FARM

Solar panels aligned on a farm (KEYSTONE/VWPICS/Edwin Remsberg)

AERIAL VIEW OVER FIELD AND PHOTOVOLTAIC SOLAR PANELS ON ROOF OF AGRICULTURAL BUILDINGS OF FARM

Luftaufnahme eines Feldes und photovoltaische Solarmodule auf dem Dach der landwirtschaftlichen Gebaeude eines Bauernhofs Aerial view over field and photovoltaic solar panels on roof of agricultural buildings of farm (KEYSTONE/imageBROKER/ALIMDI / ARTERRA)

AERIAL VIEW OVER SOLAR PANELS OF PHOTOVOLTAIC POWER STATION, SOLAR PARK FOR THE SUPPLY OF ELECTRICITY, MECKLENBURG-VORPOMMERN, GERMANY

Luftaufnahme der Solarmodule eines Photovoltaik Kraftwerks, Solarpark zur Stromversorgung, MecklenburgVorpommern Deutschland Aerial view over solar panels of photovoltaic power station, solar park for the supply of electricity, Mecklenburg-Vorpommern, Germany (KEYSTONE/imageBROKER/ALIMDI / ARTERRA)

AERIAL VIEW OVER SOLAR PANELS OF PHOTOVOLTAIC POWER STATION, SOLAR PARK FOR THE SUPPLY OF ELECTRICITY, MECKLENBURG-VORPOMMERN, GERMANY

Luftaufnahme der Solarmodule eines Photovoltaik Kraftwerks, Solarpark zur Stromversorgung, MecklenburgVorpommern Deutschland Aerial view over solar panels of photovoltaic power station, solar park for the supply of electricity, Mecklenburg-Vorpommern, Germany (KEYSTONE/imageBROKER/ALIMDI / ARTERRA)

AERIAL VIEW OVER SOLAR PANELS OF PHOTOVOLTAIC POWER STATION, SOLAR PARK FOR THE SUPPLY OF ELECTRICITY, MECKLENBURG-VORPOMMERN, GERMANY

Luftaufnahme der Solarmodule eines Photovoltaik Kraftwerks, Solarpark zur Stromversorgung, MecklenburgVorpommern Deutschland Aerial view over solar panels of photovoltaic power station, solar park for the supply of electricity, Mecklenburg-Vorpommern, Germany (KEYSTONE/imageBROKER/ALIMDI / ARTERRA)

AERIAL VIEW OVER SOLAR PANELS OF PHOTOVOLTAIC POWER STATION, SOLAR PARK FOR THE SUPPLY OF ELECTRICITY, MECKLENBURG-VORPOMMERN, GERMANY

Luftaufnahme der Solarmodule eines Photovoltaik Kraftwerks, Solarpark zur Stromversorgung, MecklenburgVorpommern Deutschland Aerial view over solar panels of photovoltaic power station, solar park for the supply of electricity, Mecklenburg-Vorpommern, Germany (KEYSTONE/imageBROKER/ALIMDI / ARTERRA)

SOLAR PANELS OF PHOTOVOLTAIC POWER STATION, SOLAR PARK FOR THE SUPPLY OF ELECTRICITY AT MECKLENBURG-WESTERN POMERANIA, GERMANY

Solarmodule eines Fotovoltaik Kraftwerks, Solarpark fuer die Stromversorgung in MecklenburgVorpommern Deutschland Solar panels of photovoltaic power station, solar park for the supply of electricity at Mecklenburg-Western Pomerania, Germany (KEYSTONE/imageBROKER/ALIMDI / ARTERRA)

AERIAL VIEW OVER SOLAR PANELS OF PHOTOVOLTAIC POWER STATION, SOLAR PARK FOR THE SUPPLY OF ELECTRICITY

Luftaufnahme der Solarmodule eines Photovoltaik Kraftwerks, Solarpark fuer die Stromerzeugung Aerial view over solar panels of photovoltaic power station, solar park for the supply of electricity (KEYSTONE/imageBROKER/ALIMDI / ARTERRA)

AERIAL VIEW OVER SOLAR PANELS OF PHOTOVOLTAIC POWER STATION, SOLAR PARK FOR THE SUPPLY OF ELECTRICITY

Luftaufnahme der Solarmodule eines Photovoltaik Kraftwerks, Solarpark fuer die Stromerzeugung Aerial view over solar panels of photovoltaic power station, solar park for the supply of electricity (KEYSTONE/imageBROKER/ALIMDI / ARTERRA)

AERIAL VIEW OVER SOLAR PANELS OF PHOTOVOLTAIC POWER STATION, SOLAR PARK FOR THE SUPPLY OF ELECTRICITY

Luftaufnahme der Solarmodule eines Photovoltaik Kraftwerks, Solarpark fuer die Stromerzeugung Aerial view over solar panels of photovoltaic power station, solar park for the supply of electricity (KEYSTONE/imageBROKER/ALIMDI / ARTERRA)

AERIAL VIEW OVER SOLAR PANELS OF PHOTOVOLTAIC POWER STATION, SOLAR PARK FOR THE SUPPLY OF ELECTRICITY

Luftaufnahme der Solarmodule eines Photovoltaik Kraftwerks, Solarpark fuer die Stromerzeugung Aerial view over solar panels of photovoltaic power station, solar park for the supply of electricity (KEYSTONE/imageBROKER/ALIMDI / ARTERRA)

SOLAR PANELS OF PHOTOVOLTAIC POWER STATION, SOLAR PARK FOR THE SUPPLY OF ELECTRICITY AT MECKLENBURG-WESTERN POMERANIA, GERMANY

Solarmodule eines Fotovoltaik Kraftwerks, Solarpark fuer die Stromversorgung in MecklenburgVorpommern Deutschland Solar panels of photovoltaic power station, solar park for the supply of electricity at Mecklenburg-Western Pomerania, Germany (KEYSTONE/imageBROKER/ALIMDI / ARTERRA)

AERIAL VIEW OVER SOLAR PANELS OF PHOTOVOLTAIC POWER STATION, SOLAR PARK FOR THE SUPPLY OF ELECTRICITY

Luftaufnahme der Solarmodule eines Photovoltaik Kraftwerks, Solarpark fuer die Stromerzeugung Aerial view over solar panels of photovoltaic power station, solar park for the supply of electricity (KEYSTONE/imageBROKER/ALIMDI / ARTERRA)

ROWS OF SOLAR PANELS COVERING FORMER PASTURELAND, TATABANYA, HUNGARY, AUGUST, 2020. HUNGARY NATURE PHOTOGRAPHER OF THE YEAR COMPETITION 2021 - SUSTAINABLE ENERGY AND NATURE CATEGORY -HIGHLY COMMENDED & SAJTOFOTO (PRESSPHOTO) HUNGARY PHOTO COMPETITION 2021

Rows of solar panels covering former pastureland, Tatabanya, Hungary, August, 2020. Hungary Nature Photographer of the Year Competition 2021 - Sustainable Energy and Nature category -Highly Commended & SajtoFoto (PressPhoto) Hungary Photo Competition 2021 Category Winner - Nature series. 8 of 8.. (KEYSTONE/NATURE PICTURE LIBRARY/MILAN RADISICS)

SOLAR PANELS AND FIELDS OF LAVENDER (LAVANDULA SP) AND CLARY SAGE (SALVIA SCLAREA) FIELD , AERIAL VIEW, VALENSOLE PLATEAU, ALPES DE HAUTE PROVENCE, FRANCE, JUNE 2020.

Solar panels and fields of lavender (Lavandula sp) and clary sage (Salvia sclarea) field , aerial view, Valensole plateau, Alpes de Haute Provence, France, June 2020.. (KEYSTONE/NATURE PICTURE LIBRARY/DENIS-HUOT)

SUBURBAN HOME WITH SOLAR PANELS

Suburban home with solar panels on the roof, Massachusetts, USA. (KEYSTONE/SCIENCE PHOTO LIBRARY/Joan Slatkin/UCG/Universal Images Group/SCIENCE PHOTO LIBRARY)

BROMPTON BIKE DOCK, LOCKERS HOLDING BROMPTON FOLDING BICYCLES FOR HIRE OUTSIDE THE WHITTINGTON HOSPITAL. THE SOLAR PANELS ABOVE PROVIDE ALL THE ENERGY NEEDED TO POWER THE DOCK. ISLINGTON, ENGLAND, UK, FEBRUARY 2014.

Brompton Bike Dock, lockers holding Brompton folding bicycles for hire outside the Whittington Hospital. The solar panels above provide all the energy needed to power the Dock. Islington, England, UK, February 2014.. (KEYSTONE/NATURE PICTURE LIBRARY/PAT TUSON)

SOLAR PANELS SET INTO GREEN ROOF, SHOREDITCH, LONDON BOROUGH OF HACKNEY, ENGLAND, UK, SEPTEMBER 2015.

Solar panels set into green roof, Shoreditch, London Borough of Hackney, England, UK, September 2015.. (KEYSTONE/NATURE PICTURE LIBRARY/PAT TUSON)

SOLAR PANELS SET INTO GREEN ROOF, SHOREDITCH, LONDON BOROUGH OF HACKNEY, ENGLAND, UK, SEPTEMBER 2015.

Solar panels set into green roof, Shoreditch, London Borough of Hackney, England, UK, September 2015.. (KEYSTONE/NATURE PICTURE LIBRARY/PAT TUSON)

SOLAR PANELS SET INTO GREEN ROOF, SHOREDITCH, LONDON BOROUGH OF HACKNEY, ENGLAND, UK, SEPTEMBER 2015.

Solar panels set into green roof, Shoreditch, London Borough of Hackney, England, UK, September 2015.. (KEYSTONE/NATURE PICTURE LIBRARY/PAT TUSON)

SOLAR PANELS ON ROOF OF MUSWELL HILL METHODIST CHURCH WITH GARDEN IN FRONT, HARINGEY, ENGLAND, BRITAIN, UK, SEPTEMBER 2015.

Solar panels on roof of Muswell Hill Methodist Church with garden in front, Haringey, England, Britain, UK, September 2015.. (KEYSTONE/NATURE PICTURE LIBRARY/PAT TUSON)