Why summer prices are lower
Three reasons summer propane prices are the year's best:
- Demand trough — residential consumption is at its annual minimum (cooking, water heat only; no space heat)
- Inventory build — terminals and fractionators are restocking from winter drawdown
- Dealer competition — pre-buy programmes are how dealers secure customer commitments for the winter ahead; competition tightens pricing
Pre-buy contracts
Dealers offer pre-buy programmes between June and September for the following October–March heating season. You commit to a gallon quantity at a locked rate, paid upfront or financed. The dealer delivers through the winter at that rate, regardless of where the spot market moves.
Pre-buy pays off when winter prices rise (the usual pattern) and loses when winter prices fall (rare but possible). For most customers in most years, pre-buy is the better expected-value choice. See fixed propane pricing.
Capped (ceiling) contracts
An alternative to pre-buy: capped contracts set a maximum price you'll pay regardless of spot moves, but let you benefit if spot falls below the cap. Small enrolment fee covers the implicit option. Often the best balanced choice — winter spike protection without giving up downside.
Top off your tank in summer
Even without a pre-buy contract, a summer fill at June–August rates locks in your physical inventory at the year's best prices. A 500-gal tank filled to 80% in July (400 usable gallons) gives you a buffer that delays your first winter fill into October–November, often at meaningfully better rates than waiting for a January refill.
FAQ
When do dealers offer pre-buy contracts?
Most US dealers launch summer pre-buy programmes June through September, with offers typically expiring by October. By the time heating season starts, the best rates are gone.
How much can I save with a summer pre-buy?
Typically \$0.30–\$0.60/gal compared to spot-rate winter fills — sometimes more in volatile years. On a 700-gallon winter use, that's \$210–\$420 saved.
What's the catch with pre-buy?
Three: price downside risk (rare but possible if winter is mild and prices fall), tank capacity (you must be able to accept the gallons), and cash-flow upfront (some dealers offer financing; otherwise it's a lump-sum payment).