A worker conducts quality-check of a solar module product at a factory of a monocrystalline silicon solar equipment manufacturer LONGi Green Technology Co, in Xian, Shaanxi province, China December 10, 2019. Picture taken December 10, 2019. REUTERS/Muyu Xu

Windmills line a hillside in Palm Springs, California, U.S., November 29, 2019. REUTERS/Lucy Nicholson

Windmills line a hillside in Palm Springs, California, U.S., November 29, 2019. REUTERS/Lucy Nicholson

A wind farm is shown in Movave, California, U.S., November 8, 2019. REUTERS/Mike Blake

A meteor of the Orionid Meteor Shower, created by remnants of Halley's Comet which pass through the earth's atmosphere, streak through the night sky above the San Rafael Swell outside Green River, Utah, U.S., October 23, 2019. REUTERS/George Frey TPX IMAGES OF THE DAY

The Moon rises, as a meteor of the Orionid Meteor Shower, created by remnants of Halley's Comet which pass through the earth's atmosphere, streak through the night sky above the San Rafael Swell outside Green River, Utah, U.S. October 23, 2019. REUTERS/George Frey

A meteor of the Orionid Meteor Shower, created by remnants of Halley's Comet which pass through the earth's atmosphere, streak through the night sky above the San Rafael Swell outside Green River, Utah, U.S. October 23, 2019. REUTERS/George Frey

A meteor of the Orionid Meteor Shower, created by remnants of Halley's Comet which pass through the earth's atmosphere, streak through the night sky past Halley's Comet, above the San Rafael Swell outside Green River, Utah, U.S. October 23, 2019. REUTERS/George Frey

A zompopa ant reared for human consumption is pictured in the insect farm of biologist Federico Paniagua, as he promotes the ingestion of a wide variety of insects as a low-cost and nutrient-rich food, in Grecia, Costa Rica July 13, 2019. Picture taken July 13, 2019. REUTERS/Juan Carlos Ulate

A zompopa ant, reared for human consumption, is pictured in the insect farm of biologist Federico Paniagua, who promotes the ingestion of a wide variety of insects as a low-cost and nutrient-rich food, in Grecia, Costa Rica July 13, 2019. Picture taken July 13, 2019. REUTERS/Juan Carlos Ulate TPX IMAGES OF THE DAY

A traffic sign pointing to a parking site for electric vehicles is pictured in Ostfildern near Stuttgart, Germany, August 19, 2019. Picture taken August 19, 2019. REUTERS/Ralph Orlowski

A traffic sign pointing to a parking site for electric vehicles is pictured in Ostfildern near Stuttgart, Germany, August 19, 2019. Picture taken August 19, 2019. REUTERS/Ralph Orlowski

People watch on top of the Drachenberg hill power-generating windmill turbines during sunset in Berlin, Germany, August 19, 2019. REUTERS/Fabrizio Bensch

Power-generating windmill turbines are pictured during sunset from the Drachenberg hill in Berlin, Germany, August 19, 2019. REUTERS/Fabrizio Bensch

Power-generating windmill turbines are pictured during sunset from the Drachenberg hill in Berlin, Germany, August 19, 2019. REUTERS/Fabrizio Bensch

Dutch Faas Moonen, professor at the Eindhoven University of Technology who designed Green Energy Mill-tower, a 21-metre-high power-generating "Eiffel Tower" offering an eco-friendly alternative to polluting generators, poses at Belgium's music festival Pukkelpop in Hasselt, Belgium August 16, 2019. REUTERS/Francois Lenoir

Dutch Faas Moonen of the Eindhoven University of Technology holds a luminescent solar concentrator as he poses next to his Green Energy Mill-tower, a 21-metre-high power-generating "Eiffel Tower" offering an eco-friendly alternative to polluting generators at Belgium's music festival Pukkelpop in Hasselt, Belgium August 16, 2019. REUTERS/Francois Lenoir

Dutch Faas Moonen of the Eindhoven University of Technology speaks next to his Green Energy Mill-tower, a 21-metre-high power-generating "Eiffel Tower" offering an eco-friendly alternative to polluting generators at Belgium's music festival Pukkelpop in Hasselt, August 16, 2019. REUTERS/Francois Lenoir

Wind turbines operate atop a mountain during sunset near the town of Kalavrita, Greece, August 15, 2019. REUTERS/Alkis Konstantinidis

Wind turbines operate at sunrise in the Permian Basin oil and natural gas production area in Big Spring, Texas, U.S., February 12, 2019. Picture taken February 12, 2019. REUTERS/Nick Oxford

Wind turbines operate at sunrise in the Permian Basin oil and natural gas production area in Big Spring, Texas U.S. February 12, 2019. Picture taken February 12, 2019. REUTERS/Nick Oxford

An aerial view of tulip fields near the city of Creil, Netherlands April 18, 2019. Picture taken April 18, 2019. REUTERS/Yves Herman?

An aerial view of tulip fields near the city of Creil, Netherlands April 18, 2019. Picture taken April 18, 2019. REUTERS/Yves Herman?

An aerial view of tulip fields near the city of Creil, Netherlands April 18, 2019. Picture taken April 18, 2019. REUTERS/Yves Herman?

A truck drives in front of a power-generating windmill turbine on the Paris-Lille highway during sunset in Wancourt, France, April 3, 2019. REUTERS/Pascal Rossignol

A truck drives in front of power-generating windmill turbines on the Paris-Lille highway during sunset in Wancourt, France, April 3, 2019. REUTERS/Pascal Rossignol

A truck drives in front of a power-generating windmill turbine on the Paris-Lille highway during sunset in Wancourt, France, April 3, 2019. REUTERS/REUTERS/Pascal Rossignol

Mar 31, 2019; Austin, TX, USA; Matt Kuchar putts on the 16th green during the final round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 31, 2019; Austin, TX, USA; Lucas Bjerregaard waits for Matt Kuchar (not pictured) to putt on on the 18th green during the semifinal round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 31, 2019; Austin, TX, USA; Lucas Bjerregaard (left) and Matt Kuchar (right) study their shots on the second green during the semifinal round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 30, 2019; Austin, TX, USA; Caddie Victor Garcia speaks with Sergio Garcia on the seventh green during the quarterfinal round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 30, 2019; Austin, TX, USA; Rory McIlroy embraces his caddie Harry Diamond on the 17th green during the fourth round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 30, 2019; Austin, TX, USA; Kevin Na studies his shot on the first green with caddie Kenny Harmes during the fourth round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 30, 2019; Austin, TX, USA; Tiger Woods reacts after his putt on the 18th green during the quarterfinal round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 30, 2019; Austin, TX, USA; Lucas Bjerregaard putts on the 17th green during the quarterfinal round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 30, 2019; Austin, TX, USA; Lucas Bjerregaard celebrates making a putt on the 16th green during the quarterfinal round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 30, 2019; Austin, TX, USA; Tiger Woods reacts after his putt on the 18th green during the quarterfinal round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 30, 2019; Austin, TX, USA; Lucas Bjerregaard checks his shot on the fifth green during the fourth round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 30, 2019; Austin, TX, USA; Tiger Woods on the 12th green during the fourth round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 30, 2019; Austin, TX, USA; Rory McIlroy on the sixth green during the fourth round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 30, 2019; Austin, TX, USA; Rory McIlroy on the sixth green during the fourth round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 30, 2019; Austin, TX, USA; Rory McIlroy on the sixth green during the fourth round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Jordan Spieth reacts on the first green during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Jordan Spieth on the first green during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Justin Thomas on the fifth green during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Keegan Bradley on the fifth green during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Justin Thomas reacts on the fifth green during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Jason Day on the fifth green during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Jason Day on the fifth green during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Phil Mickelson on the fifth green during during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Jason Day on the fifth green during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Jason Day on the fifth green during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Phil Mickelson on the fifth green during during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Phil Mickelson on the fifth green during during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Jason Day on the fifth green during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 29, 2019; Austin, TX, USA; Jason Day on the fifth green during the third round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 28, 2019; Austin, TX, USA; Dustin Johnson on the 13th green during the second round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 28, 2019; Austin, TX, USA; Brandt Snedeker on the seventh green during the second round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 28, 2019; Austin, TX, USA; Tiger Woods on the seventh green during the second round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports

Mar 28, 2019; Austin, TX, USA; Brandt Snedeker on the seventh green during the second round of the WGC - Dell Technologies Match Play golf tournament at Austin Country Club. Mandatory Credit: Stephen Spillman-USA TODAY Sports