For the first time, on Saturday 25 March 2017, electricity demand in Great Britain was lower during the afternoon than it was overnight due to high solar generation

Electricity demand, GW

Friday 24 March

Saturday 25 March

40

35

Afternoon

minimum

30

25

Overnight

minimums

Afternoon

minimum

12

6am

12

6pm

12

6am

12

6pm

12

Electricity demand, GW

Friday 24 March

Saturday 25 March

Sunday 26 March

40

35

Overnight

minimum

Overnight

minimum

Afternoon

minimum

30

Overnight

minimum

25

Afternoon

minimum

Afternoon

minimum

12

6am

Noon

6pm

12

6am

Noon

6pm

12

6am

Noon

6pm

12