Natural Gas vs Propane Generators: Which Is Right for Your KC Home?
Most Kansas City homes use natural gas generators — but propane is the better choice in some situations. Here's how to decide, plus what Spire and Evergy coordination looks like.
One of the first decisions in generator planning is fuel type. In Kansas City, it usually comes down to two options.
Natural Gas: The Default Choice for KC Homes
If your home has natural gas service (and most homes in the KC metro do), natural gas is almost always the right choice. Here's why:
Unlimited fuel supply: Natural gas flows continuously from the utility. You never run out, never need to refill a tank, and never need to schedule a delivery. During a 5-day ice storm, your generator runs as long as the outage lasts.
No storage required: No propane tank on your property. No setback requirements for tank placement. No refueling logistics.
Lower long-term cost: Natural gas is typically cheaper per BTU than propane in the KC market. Over the 20+ year life of a generator, the fuel savings add up.
Spire Energy coordination: Your gas meter may need to be upgraded to supply enough BTUs for both your home's existing gas appliances and the generator. This is common and we coordinate directly with Spire Energy as part of every installation. Spire's meter upgrade is a utility process — typically completed within 1–3 weeks.
Propane: The Right Choice When Gas Isn't Available
Propane generators are identical in operation to natural gas units — they start automatically, run through the ATS, and power your home exactly the same way. The difference is the fuel source.
When propane makes sense:
- Your home doesn't have natural gas service (common in rural Liberty, eastern Lee's Summit, Smithville, and parts of southern Olathe)
- Your natural gas line is undersized and Spire can't upgrade it cost-effectively
- You prefer energy independence from the utility grid
Propane considerations:
- You'll need a propane tank (typically 250–500 gallons for residential generators). Add $1,500–$3,000+ for tank installation.
- Tank placement must meet setback requirements from buildings, property lines, and ignition sources
- You'll need to monitor fuel level and schedule refills (or use a wireless tank monitor)
- During extended outages, propane supply is finite — a 500-gallon tank typically lasts 5–10 days depending on generator size and load
Dual-Fuel Generators
Some Generac and Kohler models offer dual-fuel capability — they can run on either natural gas or propane. This provides flexibility if you're in an area where gas service is unreliable or if you want a propane backup to your gas supply.
Dual-fuel models cost slightly more upfront but provide maximum fuel flexibility.
What About Diesel?
Diesel generators are primarily used in commercial applications — hospitals, data centers, and large facilities. For residential use in Kansas City, natural gas or propane is more practical, cleaner, quieter, and requires less maintenance.
How We Help You Decide
During your free site assessment, we evaluate:
- Whether your home has natural gas service
- Your current gas meter size and capacity
- Whether Spire can upgrade your meter (if needed)
- Property layout for generator and/or propane tank placement
- Your preferences for fuel independence vs convenience
We'll recommend the right fuel type for your specific situation — and handle all utility coordination regardless of which fuel you choose.
Call (913) 278-6049 or request a free assessment online.
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