Natural gas vs propane for a standby generator?

Natural gas is generally the better choice for standby generators in New Brunswick if you already have gas service to your home, offering convenience and lower operating costs. However, propane is often the only option in rural areas and provides more reliable fuel supply during extended outages.

When choosing between natural gas and propane for your standby generator in New Brunswick, several factors come into play, especially given our frequent ice storms and power outages.

Natural gas advantages include lower fuel costs (typically 30-40% less expensive than propane), unlimited fuel supply during outages, and no need for fuel storage or delivery. The generator connects directly to your existing gas line, making it incredibly convenient. However, natural gas service isn't available in all areas of New Brunswick - it's primarily available in urban centers like Moncton, Saint John, and Fredericton through Enbridge Gas New Brunswick.

Propane offers greater flexibility since it's available anywhere in the province through delivery services. Propane burns cleaner than natural gas, potentially extending generator life, and provides a guaranteed fuel supply even if utility gas lines are damaged during severe weather. The main drawbacks are higher fuel costs and the need for propane tank storage and periodic refills.

For New Brunswick specifically, propane is often the only option in rural areas where natural gas isn't available. Given our Maritime climate with frequent ice storms causing multi-day outages, having a reliable fuel source is critical. A 500-gallon propane tank typically provides 3-5 days of runtime for a whole-home generator, while natural gas provides unlimited runtime as long as gas service remains intact.

Installation costs are similar for both fuel types, typically ranging from $5,000-$15,000 depending on generator size and complexity. Both require TSANB electrical permits and professional installation by a licensed electrician and qualified gas technician. The generator must be properly bonded and connected through a transfer switch to prevent backfeeding into NB Power lines.

Safety considerations are important for both options. Natural gas systems need proper gas line sizing and pressure regulation, while propane requires proper tank placement (minimum distances from windows, property lines) and leak detection systems. Both fuel types require carbon monoxide detectors and proper ventilation.

For most New Brunswick homeowners with existing natural gas service, natural gas is the more economical long-term choice. However, if you're in a rural area or want maximum fuel security during extended outages, propane is an excellent option. Consider your location, existing utilities, and how long you might need backup power during typical Maritime storms.

Need help finding an electrician experienced with generator installations? New Brunswick Electrical can match you with qualified professionals who understand both fuel options and local requirements.