Unlabeled

Average hourly electricity demand of the whole PJM grid, January vs July 2025

On an average July day, demand peaked at 138 GW in the hour after 5 p.m.; on an average January day it rose twice, after 8 a.m. and after 6 p.m., to 116 and 117 GW.

What does this axis measure?
What does this axis measure?
Average hourly electricity demand of the whole PJM grid, January vs July 2025: 24 points, a scatter chart.
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Electricity demand (GW)
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Time of day (hour)
Dots
January → July
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The data: 24 points
Time of day (hour)Electricity demand (GW), JulyElectricity demand (GW), January
0104.94104.54
1100.63103.55
297103.18
394.45103.32
493.61104.23
594.75107.03
697.26111.95
7101.6115.99
8106.86116.38
9111.77114.33
10116.42112.33
11121.36111.01
12126.3110.09
13130.71109.35
14133.67108.61
15135.67108.63
16137.17109.93
17137.69114.45
18136.14116.56
19132.74116.08
20127.9114.91
21123.23112.58
22116.39109.38
23109.85106.65
Source
U.S. Energy Information Administration, Hourly Electric Grid Monitor (Form EIA-930), demand reported by PJM Interconnection; hourly means calculated by Unlabeled
Licence
Public domain (U.S. government work); EIA asks for an acknowledgment
Read
2026-10-21
Drawn
24 points as the puzzle showed them · scatter
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