Spring shoulder season (April and May) sees the typical US household bill drop 25 to 35 percent from the February peak. The driver is HVAC. Both heating and cooling demand are minimal in mild temperatures, reducing kWh consumption by 30 to 45 percent. The shoulder-season low is also a secondary lock window. Suppliers price moderately aggressive in May-June for fall-delivery contracts.
Why bills drop 30 percent in spring
HVAC accounts for roughly half of a typical US household electric bill. Spring temperatures minimize HVAC runtime; the half of the bill effectively disappears.
Daylight extends, reducing lighting load. Hot water demand stays roughly constant (the only year-round constant). Total kWh drops 30 to 45 percent.
Should you lock during the low?
The May-June secondary lock window catches forward pricing before the summer ramp. Suppliers price moderately aggressive — not as good as August-October but better than November-February.
If you missed the August-October prime window, May-June is the next-best forward lock opportunity. Estimated savings vs winter locks: 6 to 12 percent.
Lock the rate before the next reset.
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Quick answers from the editorial desk
Why does spring bill drop?
Lock during the low?
What about my shoulder-season schedule?
When to weatherize?
Further reading