Being prepared for an unexpected power outage is a non-negotiable part of homeownership in Northeast Florida and Southeast Georgia, where unpredictable weather can leave you without power at the worst possible moment. The generator is the headline item, but the fuel it burns is just as important - it drives your runtime, your operating cost, and your maintenance profile. Let us walk through the three common fuel types and help you choose the right one.
Diesel Fuel
Pros
- Powerful - diesel generators deliver robust output for long, heavy outages.
- Efficient - diesel has higher energy density, so you get more runtime per gallon.
- Widely available - diesel fuel is easy to source from most suppliers.
Cons
- Louder - diesel engines tend to run noisier than gas equivalents.
- More maintenance - filters and fuel treatment matter more with diesel.
- Emissions - diesel puts out more emissions than natural gas or propane.
Propane
Pros
- Clean-burning - propane produces fewer pollutants than diesel.
- Long shelf life - propane does not degrade in storage the way gasoline or diesel can.
- Quiet operation - propane-fueled units are typically quieter at load.
Cons
- Storage required - you need an on-site tank sized for your runtime.
- Lower energy density - propane delivers less energy per gallon than diesel.
- Cold sensitivity - less of a factor in Florida, but worth knowing.
Natural Gas
Pros
- No on-site storage - piped straight from the utility.
- Cleanest fossil fuel - the lowest emissions of the three.
- Effectively unlimited runtime - as long as the gas supply holds, the generator runs.
Cons
- Lower peak output - natural gas units often produce slightly less power than diesel equivalents.
- Utility-dependent - if the gas line is disrupted, so is your backup power.
How to Pick the Right Fuel
For most Northeast Florida and Southeast Georgia homes, the decision comes down to what is already at your house. If you are on a natural gas line, that is almost always the winner - no tank to maintain, no fuel runs, no storage space used. If you are rural and already have propane for the stove or water heater, adding a propane standby generator is a clean fit. Diesel usually makes sense for commercial or large-acreage properties where runtime under heavy load matters more than convenience.
Understanding Your Power Needs
When we sit down with you, we look at three things: what you want to keep running during an outage, what fuel is already on site, and what your long-term runtime goal is (hours, days, or a week-plus). Those answers set the size and the fuel choice.
Why Choose GenCo Generators?
As a Generac Premier Dealer and an authorized Kohler installer, we install both brands across all three fuel types. We handle the site survey, load calculation, permitting, gas line work, electrical connection, transfer switch, and commissioning - start to finish. Generators, it is all we do.
Not sure which fuel is right for your home? Contact GenCo Generators or call 904-468-3770 for a free consultation. We will beat any competitor pricing or we will pay you $500.