Quick answer
The propane tank for a backup generator is sized by the load you want to back up and how many days of runtime you want. For whole-home backup, 250 to 500 gallon tanks are common. Propane does not degrade, so it is ready when the grid fails. Tropigas calculates the exact size in a free evaluation. Call 787-641-8002.
Tropigas de Puerto Rico is a propane distributor with more than 60 years of history and 23 plants across the island that sizes, sells, and installs tanks for backup generators. On an island where the grid fails often, the right tank is what keeps your generator running when you need it most.
- How it's sized
- By the load to back up and the days of runtime
- Common sizes
- 250 to 500 gallons for whole-home
- Propane advantage
- Does not degrade; ready when the power goes out
- Standard
- Installation to NFPA 58 and 54
- For the home
- The tank is sold with a free installation design
- Phone
- 787-641-8002
What tank size does my generator need?
It depends on two things: how much load you want to back up (the whole house or essential circuits) and how many days of runtime you want without a refill. The more load and the more days, the bigger the tank. For whole-home backup, 250 to 500 gallon tanks are common, and more for higher demand. We do the exact calculation during the evaluation based on your generator and consumption.
Why propane is ideal for backup
Propane does not degrade. Stored in your tank, it stays stable indefinitely and is ready the day the grid fails, unlike other fuels that spoil over time. The tank is also filled on your property, so you do not depend on going out for fuel in the middle of an emergency. For the equipment detail, see propane generator systems.
Tank location next to the generator
The tank and the generator must meet NFPA 58 safety clearances from windows, doors, ignition sources, and property lines. An NFPA certified technician places both so they meet code without taking your usable space, and runs the gas line from the tank to the generator. In coastal areas, corrosion and anchoring considerations are added.
How to choose your tank for the generator
- We define the load to back up: whole house or essential circuits.
- We set how many days of runtime you want without a refill.
- We calculate the tank size based on your generator and consumption.
- We place the tank to NFPA 58 and run the line to the generator.
- We install, test, and schedule propane delivery.
Free evaluation, no commitment, NFPA certified technicians.
Buying the tank for your generator
For the home, Tropigas sells the tank and the purchase includes a free installation design. You own the equipment. Rental is for commercial and industrial use only. Call 787-641-8002 and we calculate the right tank for your generator.
Back to Propane Tank Services or call 787-641-8002 to size your generator's tank.
Frequently asked questions about propane tanks for generators
Ing. Rodolfo Leo Quiñones
Operations, Sales & Export Manager, Tropigas de Puerto Rico
Expert in propane energy systems, NFPA compliance, and industrial gas logistics in Puerto Rico and the Caribbean.
