Employees work at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

An employee works at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

An employee works at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

Employees work at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

An employee works at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

An employee works at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

An employee works at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

Employees work at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

Employees work at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

An employee works at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

An employee works at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

An employee works at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

Employees work at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

Employees work at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

Employees work at Veolia’s solar panel recycling plant in Rousset, France, June 25, 2018. At the plant, photovoltaic panels are dissembled and their constituent parts such as glass, aluminium, silicon and plastics are recycled. REUTERS/Jean-Paul Pelissier 

A general view shows solar panels to produce renewable energy at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

Solar panels to produce renewable energy are seen at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

A general view shows solar panels to produce renewable energy at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

A general view shows solar panels to produce renewable energy at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

A general view shows solar panels to produce renewable energy at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

A general view shows solar panels to produce renewable energy at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

Solar panels to produce renewable energy are seen at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

A general view shows solar panels to produce renewable energy at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

An employee walks past solar panels to produce renewable energy at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

A general view shows solar panels to produce renewable energy at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

Solar panels to produce renewable energy are seen at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

Solar panels to produce renewable energy are seen at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

A general view shows solar panels to produce renewable energy at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

A general view shows solar panels to produce renewable energy at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

A general view shows solar panels to produce renewable energy at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

A general view shows solar panels to produce renewable energy at the Urbasolar photovoltaic park in Gardanne, France, June 25, 2018. REUTERS/Jean-Paul Pelissier 

The view from the living room of an apartment of the Elithis-Danube tower, partially protected by panels made with photovoltaic elements, is seen in Strasbourg, France, June 14, 2018. According to it's developers this Elithis-Danube, a 16 storey and 50 meters high tower, is the first positive-energy residence tower in the world. Picture taken June 14, 2018. REUTERS/Vincent Kessler 

Saudi man looks at the solar plant in Uyayna, north of Riyadh, Saudi Arabia April 10, 2018. Picture taken April 10, 2018. REUTERS/Faisal Al Nasser 

A solar plant is seen in Uyayna, north of Riyadh, Saudi Arabia April 10, 2018. Picture taken April 10, 2018. REUTERS/Faisal Al Nasser 

An array of solar panels is seen in the desert near Victorville, California, U.S. March 28, 2018. REUTERS/Lucy Nicholson 

Sheep are herded at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe TPX IMAGES OF THE DAY 

French Minister for Ecological and Inclusive Transition Nicolas Hulot attends a visit at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

French Minister for Ecological and Inclusive Transition Nicolas Hulot attends a visit at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

French Minister for Ecological and Inclusive Transition Nicolas Hulot poses during a visit at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

A sheep breeder is seen with his sheep at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

French Minister for Ecological and Inclusive Transition Nicolas Hulot attends a visit at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

French Minister for Ecological and Inclusive Transition Nicolas Hulot poses during a visit at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

French Minister for Ecological and Inclusive Transition Nicolas Hulot poses during a visit at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

A sheep breeder is seen with his sheep at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

Sheep are herded at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

French Minister for Ecological and Inclusive Transition Nicolas Hulot poses during a visit at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

French Minister for Ecological and Inclusive Transition Nicolas Hulot attends a visit at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

Sheep are herded at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

A sheep breeder is seen with his sheep at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

French Minister for Ecological and Inclusive Transition Nicolas Hulot attends a visit at a photovoltaic power plant in Allonnes near Le Mans, France January 8, 2018. REUTERS/Stephane Mahe 

An Electrify SG engineer shows how a PowerPod is installed to record data of photovoltaic solar panels on a rooftop in Singapore, December 18, 2017. Picture taken December 18, 2017. REUTERS/Edgar Su 

An Electrify SG engineer shows how a PowerPod is installed to record data of photovoltaic solar panels on a rooftop in Singapore, December 18, 2017. Picture taken December 18, 2017. REUTERS/Edgar Su 

An Electrify SG engineer shows a PowerPod that will be installed to record data of photovoltaic solar panels on a rooftop in Singapore, December 18, 2017. Picture taken December 18, 2017. REUTERS/Edgar Su 

A Pere David's deer rests next to a watering hole and a solar panel in Thompson, Texas on August 30, 2017. Picture taken on August 30, 2017. REUTERS/Adrees Latif TPX IMAGES OF THE DAY 

A worker works at a solar power plant by Superblock, Southeast Asia's biggest producer of solar power in Phetchaburi province, Thailand, August 23, 2017. REUTERS/Athit Perawongmetha TPX IMAGES OF THE DAY 

Photovoltaic panels are seen on a farm outside the town of Mosta, Malta, August 7, 2017. REUTERS/Darrin Zammit Lupi 

Photovoltaic panels are seen on a farm outside the town of Mosta, Malta, August 7, 2017. REUTERS/Darrin Zammit Lupi 

Photovoltaic panels are seen on a farm outside the town of Mosta, Malta, August 7, 2017. REUTERS/Darrin Zammit Lupi 

Members of the Nemeth family sit in their room lit by solar-charged LED strips that will help them reduce their energy bill under a programme run by the Romaversitas Foundation in Bicske, Hungary, December 15, 2016. Picture taken December 15, 2016. REUTERS/Bernadett Szabo 

Tesla's electric car, Powerwall and solar roof are shown by Tesla Motors Inc Chief Executive Elon Musk, unveiling new energy products aimed at illustrating the benefits of combining his electric car and battery maker with solar installer SolarCity Corp, in Los Angeles, California, U.S., October 28, 2016. REUTERS/Nichola Groom/File Photo GLOBAL BUSINESS WEEK AHEAD PACKAGE - SEARCH 'BUSINESS WEEK AHEAD NOV 7' FOR ALL IMAGES