Propane Generators VS Natural Gas Generators

When talking about home standby generators they are almost always one of these two. Some people will put in diesel, but most do not so let's discuss the differences between a propane generator vs a natural gas. Although natural gas and propane share similarities, there are significant differences between the two fuels. To begin, let's examine their energy output, measured in BTUs (British Thermal Units).

Propane provides approximately 2,500 BTUs per cubic foot, which is more than double the energy output of natural gas. Natural gas offers a little over 1,000 BTUs per cubic foot, making it less efficient than propane.

For instance, a 100,000 BTU propane furnace would consume only 40 cubic feet of fuel in an hour, whereas a natural gas furnace would require nearly 97 cubic feet during the same period. This highlights how propane is more efficient than natural gas.

Moreover, it's essential to compare the cost of the two fuels. Suppose we can buy 1,000 cubic feet of natural gas for $15.00, providing around one million BTUs. In contrast, 11.20 gallons of propane, costing $2.50 per gallon, provide the same amount of energy.

Therefore, in this example, natural gas is the cheaper option. When deciding on which type of generator to purchase, it's crucial to perform calculations like these. Generac home generators are compatible with both propane and natural gas. Although propane is more energy-dense, it is typically more expensive than natural gas. Natural gas is around 40% cheaper than propane, making it the more affordable option for generator fuel. However, natural gas may not be available in some regions, or upgrading the service to meet demand can be expensive. Generac generators are engineered to switch seamlessly between propane and natural gas, allowing homeowners to use the fuel that is more readily available or cost-effective at any given time.