For cost-conscious homeowners, GRAINCO FS offers convenient pre-buy price protection programs. This guarantees a firm price for the number of gallons you anticipate using before May 31st of the next year, so price fluctuations won’t be a factor during the high-demand heating season. All payment plan contracts must be signed in the summer, and payments begin in July. Contracted gallons are delivered between September 1st and May 31st. 500 gallon minimum contract to qualify.  Enrollment ends August 31st.