Last year we built a new house with really good insulation and buried 2-1000 gallon propane tanks. We used just over 400 gallons of propane from the beginning of February to mid-October. Cost us just over $500 to top off in October for the winter. It is well worth owning the propane tanks to make shopping for it possible where as with leasing, you are stuck with the company you leased from. We use the propane for heating, hot water and whole house generator.
We also installed solar panels which we purchased, with a break even period of around 9 years. It sure is nice getting a monthly bill from Eversource for $10!