For Puerto Rico homeowners evaluating their energy options, the fundamental comparison is AEE electricity versus propane for heating and cooking applications. This guide focuses on the direct comparison between what comes out of your AEE outlet and what comes out of your propane tank.
The Cost Reality , AEE Electricity in Puerto Rico
Puerto Rico's electricity rates are among the highest in the United States. AEE residential rates have ranged from $0.22 to $0.32 per kWh in recent years, compared to a U.S. mainland average of approximately $0.12 to $0.14 per kWh. Puerto Rico homeowners pay 2 to 2.5 times more per kWh than the average American household.
Real Monthly Cost Comparison
| Application | AEE Electric Monthly Cost | Propane Monthly Cost | Monthly Savings |
|---|---|---|---|
| Water heating (family of 4) | $90 to $113 | $60 to $83 | $30 to $53 |
| Cooking (daily use) | $11 to $19 | $8 to $16 | $3 to $11 |
| Clothes drying | $14 to $20 | $8 to $12 | $6 to $8 |
| Total combined | $115 to $152 | $76 to $111 | $39 to $72 |
Reliability , AEE vs Propane
AEE reliability: Puerto Rico's electrical grid experiences over 100 outages per year on average. Hurricane Maria produced the longest blackout in U.S. history, leaving 3.4 million people without power for up to 11 months. Hurricane Fiona in 2022 repeated a similar scenario.
Propane reliability: Your propane tank is sealed on your property, independent of any utility infrastructure. It does not go down during storms, earthquakes, equipment failures, or trees on transmission lines.
Tropigas supply continuity: Tropigas's private Maritime Terminal in Guaynabo gives Tropigas supply chain control that allowed propane deliveries to resume faster after Hurricane Maria than AEE power was restored to most households.
The Hidden Cost of AEE Outages
⚠️ Food spoilage: A 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 outages per year, that is $300 to $900 in annual food losses attributable to AEE dependence.
Productivity loss: Remote workers, home businesses, and students lose productive time during outages.
These costs do not appear on your AEE bill but they are real costs of AEE dependence that propane helps eliminate.
The Efficiency Factor
When AEE burns petroleum to generate electricity, approximately 65% of the fuel's energy is lost in generation and transmission. By the time electricity reaches your appliance, only about 35% of the original fuel's energy remains as useful energy. Propane burned directly in a water heater or range converts 90% to 95% of its energy to useful heat at the point of use. No generation losses. No transmission losses.
The Complete Comparison
Frequently Asked Questions
Ing. Rodolfo Leo Quiñones
Operations, Sales and Export Manager , Tropigas / Tropigas SXM
Expert in propane energy systems, NFPA compliance, and industrial gas logistics in Puerto Rico and the Caribbean.
