An increase in unusually hot and cold days is boosting US energy demand

An increase in unusually hot and cold days is boosting US energy demand

Combined heating and cooling days,

annual % change

10%

5

0

-5

-10

1950

1970

1990

2010

Combined heating and cooling days, annual % change

10%

5

0

-5

-10%

1950

1960

1970

1980

1990

2000

2010

2018