Propane Cost Savings in Puerto Rico
How much can you save switching to propane? Real numbers comparing propane vs AEE electricity.
Puerto Rico's electricity rates are among the highest in the United States. According to the U.S. Energy Information Administration, Puerto Rico residential electricity rates are consistently 2 to 3 times higher than the national average. Every kilowatt-hour you buy from the AEE costs significantly more than the equivalent energy from propane for heating and cooking applications.
For Puerto Rico homeowners and businesses, switching from AEE electricity to propane for cooking, water heating, and clothes drying is one of the most effective ways to reduce monthly energy costs, while simultaneously gaining the resilience advantage of appliances that work during outages.
This page gives you the real numbers, the actual cost comparisons that Tropigas engineers use when helping Puerto Rico families and businesses evaluate propane as an energy alternative.
Total Household Savings - The Complete Picture
| Application | Annual Electric Cost | Annual Propane Cost | Annual Savings |
|---|---|---|---|
| Water heating | $1,080 to $1,350 | $800 to $1,000 | $280 to $350 |
| Cooking | $135 to $189 | $140 to $200 | $0 to $50 (similar) |
| Clothes drying | $162 to $243 | $100 to $140 | $60 to $103 |
| Total | $1,377 to $1,782 | $1,040 to $1,340 | $337 to $503/year |
Why Propane Costs Less Than AEE Electricity in Puerto Rico
AEE electricity rates:
Puerto Rico's residential electricity rates have ranged from $0.22 to $0.32 per kilowatt-hour (kWh) in recent years, among the highest in the United States. This high rate reflects the cost of generating electricity from petroleum at legacy power plants.
Propane energy cost:
Propane in Puerto Rico currently ranges from approximately $3.50 to $4.50 per gallon. One gallon of propane contains 91,500 BTUs of energy. At $4.00 per gallon, propane costs approximately $0.044 per 1,000 BTU.
The efficiency factor:
Gas appliances convert approximately 90% to 95% of their fuel's energy into useful heat. Electric resistance heating (water heaters, dryers) converts approximately 100% of electricity into heat, but at a much higher per-BTU cost.
The bottom line:
For water heating and space heating applications, propane delivers heat at approximately 30% to 50% of the cost of AEE electricity at current rates. For cooking, the cost advantage varies by cooking style but propane consistently outperforms electric resistance cooking on a cost-per-unit-of-useful-heat basis in Puerto Rico.
Application-by-Application Cost Comparison
Water Heating - The Highest-Impact Switch:
A typical Puerto Rico family of 4 using an electric water heater spends $1,080 to $1,350 per year in electricity for water heating alone. A comparable propane water heater costs $800 to $1,000 per year for the same hot water. Annual savings on water heating alone: $280 to $350 per year.
Cooking - The Quality and Cost Advantage:
A household that cooks daily on an electric range uses $135 to $189 per year in electricity. The same household on a propane range uses $140 to $200 per year. For cooking specifically, the cost difference is modest. The primary advantage of propane cooking is performance and resilience.
Clothes Drying - Faster, Better, and Cheaper:
Electric dryers are among the most energy-intensive appliances in Puerto Rico homes, costing $162 to $243 per year. A comparable gas dryer uses $100 to $140 per year. Annual savings on clothes drying: $60 to $103 per year.
The Outage Cost - What You're NOT Saving on AEE
The cost comparison above only covers normal operating periods. It doesn't account for the cost of AEE outages, which are a real and quantifiable expense for Puerto Rico households.
Food spoilage per outage:
A standard refrigerator maintains safe temperature for approximately 4 hours without power. The average Puerto Rico household loses $100 to $300 in food per extended outage event. At 3 extended outages per year, food spoilage alone costs $300 to $900 annually.
The total economic case:
A propane generator system eliminates this cost. Combined with the energy bill savings from propane appliances, the total economic case for propane in Puerto Rico is significantly stronger than the appliance savings alone suggest.
Return on Investment Calculator
Step 1:
Identify which appliances you'll switch to propane (water heater, stove, dryer, generator).
Step 2:
Estimate your current annual cost for those appliances using your AEE bill.
Step 3:
Calculate your projected propane cost using Tropigas's consumption estimates.
Step 4:
Calculate annual savings (Step 2 minus Step 3).
Step 5:
Get a complete installation quote from Tropigas (call 787-641-8002 for a free evaluation).
Step 6:
Divide the installation cost by the annual savings to get your payback period in years. Break-even is typically under 4 years, then savings continue indefinitely.
Propane Cost Savings Frequently Asked Questions
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