Natural gas can mean no refueling during a long outage if the line stays up. 33 products in our catalog meet the rule; the top 8 are shown.
Westinghouse Outdoor Power WGen20000TFc - Tri-Fuel
The Westinghouse Outdoor Power WGen20000TFc - Tri-Fuel is a tri-fuel portable generator rated at 25,200 running watts and 20,000 starting watts.
Watch: Specifications are the maker's or seller's; Wattstanding has not tested this product.
DuroMax 28,000 Watt Tri Fuel Portable Inverter Generator (XP28000iHT)
The DuroMax 28,000 Watt Tri Fuel Portable Inverter Generator (XP28000iHT) is a tri-fuel inverter generator rated at 22,000 running watts and 28,000 starting watts.
Watch: Specifications are the maker's or seller's; Wattstanding has not tested this product.
Westinghouse Outdoor Power WGen14500TFc - Tri-Fuel
The Westinghouse Outdoor Power WGen14500TFc - Tri-Fuel is a tri-fuel portable generator rated at 16,000 running watts and 14,500 starting watts.
Watch: Specifications are the maker's or seller's; Wattstanding has not tested this product.
DuroMax 17,500 Watt Tri Fuel Portable HXT Generator (XP17500HXT)
The DuroMax 17,500 Watt Tri Fuel Portable HXT Generator (XP17500HXT) is a tri-fuel portable generator rated at 13,750 running watts and 17,500 starting watts.
Watch: Specifications are the maker's or seller's; Wattstanding has not tested this product.
FIRMAN Tri Fuel Portable Generator 16800/13500W Electric Start 120/240V With CO Alert (T13071)
The FIRMAN Tri Fuel Portable Generator 16800/13500W Electric Start 120/240V With CO Alert (T13071) is a tri-fuel portable generator rated at 13,500 running watts and 16,800 starting watts.
Watch: Specifications are the maker's or seller's; Wattstanding has not tested this product.
Westinghouse Outdoor Power WGen11500TFc - Tri-Fuel
The Westinghouse Outdoor Power WGen11500TFc - Tri-Fuel is a tri-fuel portable generator rated at 13,500 running watts and 11,500 starting watts.
Watch: Specifications are the maker's or seller's; Wattstanding has not tested this product.
DuroMax 16,000 Watt Portable Tri Fuel Inverter Generator - Low THD (XP16000iHT)
The DuroMax 16,000 Watt Portable Tri Fuel Inverter Generator - Low THD (XP16000iHT) is a tri-fuel inverter generator rated at 13,000 running watts and 16,000 starting watts.
Watch: Specifications are the maker's or seller's; Wattstanding has not tested this product.
Westinghouse Outdoor Power WGen10500TFc - Tri-Fuel
The Westinghouse Outdoor Power WGen10500TFc - Tri-Fuel is a tri-fuel portable generator rated at 12,500 running watts and 10,500 starting watts.
Watch: Specifications are the maker's or seller's; Wattstanding has not tested this product.
Method
- Qualifying rule: Listed for three fuels.
- Ranking: Running watts — most running watts first.
- No lab claims. Rankings use makers' and sellers' published specifications and the prices we observed; Wattstanding has not tested these products.
- Prices change. Price-based rankings reflect the date shown on each product page.







