An aerial picture taken with a drone shows RWE's huge bucket wheel excavator in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September 30, 2020. REUTERS/Stephane Nitschke

An aerial picture taken with a drone shows RWE's huge bucket wheel excavator in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September 30, 2020. REUTERS/Stephane Nitschke

An aerial picture taken with a drone shows RWE's huge bucket wheel excavator in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September 30, 2020. REUTERS/Stephane Nitschke

An aerial picture taken with a drone shows RWE's huge bucket wheel excavator in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September 30, 2020. REUTERS/Stephane Nitschke

An aerial picture taken with a drone shows RWE's huge bucket wheel excavator in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September 30, 2020. REUTERS/Stephane Nitschke

An aerial picture taken with a drone shows RWE's huge bucket wheel excavator in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September 30, 2020. REUTERS/Stephane Nitschke

An aerial picture taken with a drone shows RWE's huge bucket wheel excavator in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September 30, 2020. REUTERS/Stephane Nitschke

An aerial picture taken with a drone shows RWE's huge bucket wheel excavator in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September 30, 2020. REUTERS/Stephane Nitschke

An aerial picture taken with a drone shows RWE's huge bucket wheel excavator in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September 30, 2020. REUTERS/Stephane Nitschke

A miner stands in front of RWE's huge bucket wheel excavator after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger from the open-cast brown coal mining of Inden near Weisweiler, Germany September, 30, 2020. REUTERS/Wolfgang Rattay

An operator of RWE's huge bucket wheel excavator is pictured in front of the paddle-wheel digger in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy excavator, in Inden, Germany September 30, 2020. REUTERS/Wolfgang Rattay

An operator of RWE's huge bucket wheel excavator walks in front of the chain wheels of the paddle-wheel digger in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy excavator, in Inden, Germany September 30, 2020. REUTERS/Wolfgang Rattay

An operator of RWE's huge bucket wheel excavator lifts his helmet while the paddle-wheel digs for lignite in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy excavator in Inden, Germany September 30, 2020. REUTERS/Wolfgang Rattay

An operator of RWE's huge bucket wheel excavator walks while the paddle-wheel digs for lignite in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy excavator, in Inden, Germany September 30, 2020. REUTERS/Wolfgang Rattay

RWE's huge bucket wheel excavator digs for lignite in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September 30, 2020. REUTERS/Wolfgang Rattay

RWE's huge bucket wheel excavator digs for lignite in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September 30, 2020. REUTERS/Wolfgang Rattay

RWE's huge bucket wheel excavator digs for lignite in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September 30, 2020. REUTERS/Wolfgang Rattay

An operator of RWE's huge bucket wheel excavator watches the paddle-wheel digging for lignite in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy excavator, in Inden, Germany September 30, 2020. REUTERS/Wolfgang Rattay

RWE's huge bucket wheel excavator runs in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September 30, 2020. REUTERS/Wolfgang Rattay

A miner walks in front of RWE's huge bucket wheel excavator after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger from the open-cast brown coal mine of Inden near Weisweiler, Germany September, 30, 2020. REUTERS/Wolfgang Rattay

RWE's huge bucket wheel excavator runs in the open-cast brown coal mine of Inden near Weisweiler after an Internet auction ended to sell the 3,500 tons heavy paddle-wheel digger, in Inden, Germany September, 30, 2020. REUTERS/Wolfgang Rattay

Two miners stand in front of RWE's huge bucket wheel excavator after an online auction ended to sell the 3500 tons heavy high paddle-wheel digger, in the open-cast brown coal mine of Inden near Weisweiler, Germany September, 30, 2020. REUTERS/Wolfgang Rattay

The Red Brigade performers attend the Extinction Rebellion protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

The Red Brigade performers attend the Extinction Rebellion protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

The Red Brigade performers attend the Extinction Rebellion protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

A main security member stands and watches the Extinction Rebellion demonstrators during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

Extinction Rebellion demonstrators sit in structures representing "canary in the coal mine" bird cages as others gather during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

Extinction Rebellion demonstrators lie in a structure representing a bird cage as others gather during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

Extinction Rebellion demonstrators lie in a structure representing a bird cage during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

An Extinction Rebellion demonstrator takes part in a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

A demonstrator is seen in silhouette behind a banner during an Extinction Rebellion protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

An Extinction Rebellion demonstrator takes part in a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

An Extinction Rebellion protester stands in front of signs, set up at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

A banner sits on a fence, set up by Extinction Rebellion protesters, at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

Demonstrators from Extinction Rebellion display a banner as a site security member looks on during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

Demonstrators from Extinction Rebellion hold flags at sunrise during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

Demonstrators from Extinction Rebellion hold flags at sunrise during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

Demonstrators from Extinction Rebellion hold flags at sunrise during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

Demonstrators from Extinction Rebellion stand in cages, depicting "canaries in the coal mine", during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

Demonstrators from Extinction Rebellion depict "canaries in the coal mine" during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

Demonstrators from Extinction Rebellion protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

An Extinction Rebellion demonstrator holds on, as he is pulled from underneath a security fence by a security team member during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

An Extinction Rebellion demonstrator is pulled from underneath a security fence by a security team member during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

An Extinction Rebellion demonstrator is pulled from underneath a security fence by a security team member during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

A demonstrator from Extinction Rebellion is pulled from underneath a security fence by a security team member during a protest at Banks Group's open-cast coal mine in Bradley, County Durham, Britain February 26, 2020. REUTERS/Scott Heppell

An excavator of German utility RWE works in the open-cast brown coal mining area of Hambach, Germany, January 16, 2020. REUTERS/Wolfgang Rattay

Excavators of German utility RWE stand in the open-cast brown coal mining area of Hambach, Germany, January 16, 2020. REUTERS/Wolfgang Rattay

An excavator of German utility RWE stands amid lignite in the open-cast brown coal mine of Garzweiler near Jackerath west of Cologne, Germany, January 15, 2020. REUTERS/Wolfgang Rattay

An excavator of German utility RWE stands amid lignite in the open-cast brown coal mine of Garzweiler near Jackerath west of Cologne, Germany, January 15, 2020. REUTERS/Wolfgang Rattay

A worker of German utility RWE stands on the bridge of an excavator in the open open-cast brown coal mining area of Garzweiler near the village of Jackerath, west of Cologne, Germany, January 15, 2020. REUTERS/Wolfgang Rattay

An excavator of German utility RWE stands in the open open-cast brown coal mining area of Garzweiler near the village of Jackerath, Germany, January 15, 2020. REUTERS/Wolfgang Rattay

An excavator of German utility RWE stands in the open open-cast brown coal mining area of Garzweiler near the village of Jackerath, Germany, January 15, 2020. REUTERS/Wolfgang Rattay

An excavator of German utility RWE stands in the open-cast brown coal mine of Garzweiler west of Cologne, Germany, January 15, 2020. In rear is a lignite power plant of RWE. REUTERS/Wolfgang Rattay

An excavator of German utility RWE stands in the open-cast brown coal mine of Garzweiler west of Cologne, Germany, January 15, 2020. In rear is a lignite power plant of RWE. REUTERS/Wolfgang Rattay

Climate activists block railway tracks leading to Jaenschwalde power station during a protest of the movement Fridays for Future and Ende Gelaende against open-cast mining near Jaenschwalde in the Lausitz region of eastern Germany, November 30, 2019. REUTERS/Christian Mang

Climate activists block railway tracks leading to Jaenschwalde power station during a protest of the movement Fridays for Future and Ende Gelaende against open-cast mining near Jaenschwalde in the Lausitz region of eastern Germany, November 30, 2019. REUTERS/Christian Mang

Climate activists block railway tracks leading to Jaenschwalde power station during a protest of the movement Fridays for Future and Ende Gelaende against open-cast mining near Jaenschwalde in the Lausitz region of eastern Germany, November 30, 2019. REUTERS/Christian Mang

Climate activists block railway tracks leading to Jaenschwalde power station during a protest of the movement Fridays for Future and Ende Gelaende against open-cast mining near Jaenschwalde in the Lausitz region of eastern Germany, November 30, 2019. REUTERS/Christian Mang

Climate activists hold a banner in front of Jaenschwalde power station during a protest of the movement Fridays for Future and Ende Gelaende against open-cast mining near Jaenschwalde in the Lausitz region of eastern Germany, November 30, 2019. The banner reads: "Love for the Lausitz. Not for the coal." REUTERS/Christian Mang

Climate activists hold a banner in front of Jaenschwalde power station during a protest of the movement Fridays for Future and Ende Gelaende against open-cast mining near Jaenschwalde in the Lausitz region of eastern Germany, November 30, 2019. The banner reads: "Love for the Lausitz. Not for the coal." REUTERS/Christian Mang